Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/curve25519/curve25519.c	Lines:	540	1239	43.6 %
Date:	2017-11-07	Branches:	28	88	31.8 %

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 2015, Google Inc.
3			*
4			* Permission to use, copy, modify, and/or distribute this software for any
5			* purpose with or without fee is hereby granted, provided that the above
6			* copyright notice and this permission notice appear in all copies.
7			*
8			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11			* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13			* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14			* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15			*/
16
17			/*
18			* This code is mostly taken from the ref10 version of Ed25519 in SUPERCOP
19			* 20141124 (http://bench.cr.yp.to/supercop.html). That code is released as
20			* public domain but this file has the ISC license just to keep licencing
21			* simple.
22			*
23			* The field functions are shared by Ed25519 and X25519 where possible.
24			*/
25
26			#include <stdlib.h>
27			#include <string.h>
28
29			#include <openssl/curve25519.h>
30
31			#ifdef ED25519
32			#include <openssl/sha.h>
33			#endif
34
35			#include "curve25519_internal.h"
36
37			static const int64_t kBottom25Bits = 0x1ffffffLL;
38			static const int64_t kBottom26Bits = 0x3ffffffLL;
39			static const int64_t kTop39Bits = 0xfffffffffe000000LL;
40			static const int64_t kTop38Bits = 0xfffffffffc000000LL;
41
42			static uint64_t load_3(const uint8_t *in) {
43			uint64_t result;
44		97568	result = (uint64_t)in[0];
45		48784	result \|= ((uint64_t)in[1]) << 8;
46		48784	result \|= ((uint64_t)in[2]) << 16;
47		48784	return result;
48			}
49
50			static uint64_t load_4(const uint8_t *in) {
51			uint64_t result;
52		24392	result = (uint64_t)in[0];
53		12196	result \|= ((uint64_t)in[1]) << 8;
54		12196	result \|= ((uint64_t)in[2]) << 16;
55		12196	result \|= ((uint64_t)in[3]) << 24;
56		12196	return result;
57			}
58
59			static void fe_frombytes(fe h, const uint8_t *s) {
60			/* Ignores top bit of h. */
61		12196	int64_t h0 = load_4(s);
62		6098	int64_t h1 = load_3(s + 4) << 6;
63		6098	int64_t h2 = load_3(s + 7) << 5;
64		6098	int64_t h3 = load_3(s + 10) << 3;
65		6098	int64_t h4 = load_3(s + 13) << 2;
66		6098	int64_t h5 = load_4(s + 16);
67		6098	int64_t h6 = load_3(s + 20) << 7;
68		6098	int64_t h7 = load_3(s + 23) << 5;
69		6098	int64_t h8 = load_3(s + 26) << 4;
70		6098	int64_t h9 = (load_3(s + 29) & 8388607) << 2;
71			int64_t carry0;
72			int64_t carry1;
73			int64_t carry2;
74			int64_t carry3;
75			int64_t carry4;
76			int64_t carry5;
77			int64_t carry6;
78			int64_t carry7;
79			int64_t carry8;
80			int64_t carry9;
81
82		6098	carry9 = h9 + (1 << 24); h0 += (carry9 >> 25) * 19; h9 -= carry9 & kTop39Bits;
83		6098	carry1 = h1 + (1 << 24); h2 += carry1 >> 25; h1 -= carry1 & kTop39Bits;
84		6098	carry3 = h3 + (1 << 24); h4 += carry3 >> 25; h3 -= carry3 & kTop39Bits;
85		6098	carry5 = h5 + (1 << 24); h6 += carry5 >> 25; h5 -= carry5 & kTop39Bits;
86		6098	carry7 = h7 + (1 << 24); h8 += carry7 >> 25; h7 -= carry7 & kTop39Bits;
87
88		6098	carry0 = h0 + (1 << 25); h1 += carry0 >> 26; h0 -= carry0 & kTop38Bits;
89		6098	carry2 = h2 + (1 << 25); h3 += carry2 >> 26; h2 -= carry2 & kTop38Bits;
90		6098	carry4 = h4 + (1 << 25); h5 += carry4 >> 26; h4 -= carry4 & kTop38Bits;
91		6098	carry6 = h6 + (1 << 25); h7 += carry6 >> 26; h6 -= carry6 & kTop38Bits;
92		6098	carry8 = h8 + (1 << 25); h9 += carry8 >> 26; h8 -= carry8 & kTop38Bits;
93
94		6098	h[0] = h0;
95		6098	h[1] = h1;
96		6098	h[2] = h2;
97		6098	h[3] = h3;
98		6098	h[4] = h4;
99		6098	h[5] = h5;
100		6098	h[6] = h6;
101		6098	h[7] = h7;
102		6098	h[8] = h8;
103		6098	h[9] = h9;
104		6098	}
105
106			/* Preconditions:
107			* \|h\| bounded by 1.12^26,1.12^25,1.12^26,1.12^25,etc.
108			*
109			* Write p=2^255-19; q=floor(h/p).
110			* Basic claim: q = floor(2^(-255)(h + 19 2^(-25)h9 + 2^(-1))).
111			*
112			* Proof:
113			* Have \|h\|<=p so \|q\|<=1 so \|19^2 2^(-255) q\|<1/4.
114			* Also have \|h-2^230 h9\|<2^231 so \|19 2^(-255)(h-2^230 h9)\|<1/4.
115			*
116			* Write y=2^(-1)-19^2 2^(-255)q-19 2^(-255)(h-2^230 h9).
117			* Then 0<y<1.
118			*
119			* Write r=h-pq.
120			* Have 0<=r<=p-1=2^255-20.
121			* Thus 0<=r+19(2^-255)r<r+19(2^-255)2^255<=2^255-1.
122			*
123			* Write x=r+19(2^-255)r+y.
124			* Then 0<x<2^255 so floor(2^(-255)x) = 0 so floor(q+2^(-255)x) = q.
125			*
126			* Have q+2^(-255)x = 2^(-255)(h + 19 2^(-25) h9 + 2^(-1))
127			* so floor(2^(-255)(h + 19 2^(-25) h9 + 2^(-1))) = q. */
128			static void fe_tobytes(uint8_t *s, const fe h) {
129		12196	int32_t h0 = h[0];
130		6098	int32_t h1 = h[1];
131		6098	int32_t h2 = h[2];
132		6098	int32_t h3 = h[3];
133		6098	int32_t h4 = h[4];
134		6098	int32_t h5 = h[5];
135		6098	int32_t h6 = h[6];
136		6098	int32_t h7 = h[7];
137		6098	int32_t h8 = h[8];
138		6098	int32_t h9 = h[9];
139			int32_t q;
140
141		6098	q = (19 * h9 + (((int32_t) 1) << 24)) >> 25;
142		6098	q = (h0 + q) >> 26;
143		6098	q = (h1 + q) >> 25;
144		6098	q = (h2 + q) >> 26;
145		6098	q = (h3 + q) >> 25;
146		6098	q = (h4 + q) >> 26;
147		6098	q = (h5 + q) >> 25;
148		6098	q = (h6 + q) >> 26;
149		6098	q = (h7 + q) >> 25;
150		6098	q = (h8 + q) >> 26;
151		6098	q = (h9 + q) >> 25;
152
153			/* Goal: Output h-(2^255-19)q, which is between 0 and 2^255-20. */
154		6098	h0 += 19 * q;
155			/* Goal: Output h-2^255 q, which is between 0 and 2^255-20. */
156
157		6098	h1 += h0 >> 26; h0 &= kBottom26Bits;
158		6098	h2 += h1 >> 25; h1 &= kBottom25Bits;
159		6098	h3 += h2 >> 26; h2 &= kBottom26Bits;
160		6098	h4 += h3 >> 25; h3 &= kBottom25Bits;
161		6098	h5 += h4 >> 26; h4 &= kBottom26Bits;
162		6098	h6 += h5 >> 25; h5 &= kBottom25Bits;
163		6098	h7 += h6 >> 26; h6 &= kBottom26Bits;
164		6098	h8 += h7 >> 25; h7 &= kBottom25Bits;
165		6098	h9 += h8 >> 26; h8 &= kBottom26Bits;
166		6098	h9 &= kBottom25Bits;
167			/* h10 = carry9 */
168
169			/* Goal: Output h0+...+2^255 h10-2^255 q, which is between 0 and 2^255-20.
170			* Have h0+...+2^230 h9 between 0 and 2^255-1;
171			* evidently 2^255 h10-2^255 q = 0.
172			* Goal: Output h0+...+2^230 h9. */
173
174		6098	s[0] = h0 >> 0;
175		6098	s[1] = h0 >> 8;
176		6098	s[2] = h0 >> 16;
177		6098	s[3] = (h0 >> 24) \| ((uint32_t)(h1) << 2);
178		6098	s[4] = h1 >> 6;
179		6098	s[5] = h1 >> 14;
180		6098	s[6] = (h1 >> 22) \| ((uint32_t)(h2) << 3);
181		6098	s[7] = h2 >> 5;
182		6098	s[8] = h2 >> 13;
183		6098	s[9] = (h2 >> 21) \| ((uint32_t)(h3) << 5);
184		6098	s[10] = h3 >> 3;
185		6098	s[11] = h3 >> 11;
186		6098	s[12] = (h3 >> 19) \| ((uint32_t)(h4) << 6);
187		6098	s[13] = h4 >> 2;
188		6098	s[14] = h4 >> 10;
189		6098	s[15] = h4 >> 18;
190		6098	s[16] = h5 >> 0;
191		6098	s[17] = h5 >> 8;
192		6098	s[18] = h5 >> 16;
193		6098	s[19] = (h5 >> 24) \| ((uint32_t)(h6) << 1);
194		6098	s[20] = h6 >> 7;
195		6098	s[21] = h6 >> 15;
196		6098	s[22] = (h6 >> 23) \| ((uint32_t)(h7) << 3);
197		6098	s[23] = h7 >> 5;
198		6098	s[24] = h7 >> 13;
199		6098	s[25] = (h7 >> 21) \| ((uint32_t)(h8) << 4);
200		6098	s[26] = h8 >> 4;
201		6098	s[27] = h8 >> 12;
202		6098	s[28] = (h8 >> 20) \| ((uint32_t)(h9) << 6);
203		6098	s[29] = h9 >> 2;
204		6098	s[30] = h9 >> 10;
205		6098	s[31] = h9 >> 18;
206		6098	}
207
208			/* h = f */
209			static void fe_copy(fe h, const fe f) {
210		12196	memmove(h, f, sizeof(int32_t) * 10);
211		6098	}
212
213			/* h = 0 */
214		12196	static void fe_0(fe h) { memset(h, 0, sizeof(int32_t) * 10); }
215
216			/* h = 1 */
217			static void fe_1(fe h) {
218		24392	memset(h, 0, sizeof(int32_t) * 10);
219		12196	h[0] = 1;
220		12196	}
221
222			/* h = f + g
223			* Can overlap h with f or g.
224			*
225			* Preconditions:
226			* \|f\| bounded by 1.12^25,1.12^24,1.12^25,1.12^24,etc.
227			* \|g\| bounded by 1.12^25,1.12^24,1.12^25,1.12^24,etc.
228			*
229			* Postconditions:
230			* \|h\| bounded by 1.12^26,1.12^25,1.12^26,1.12^25,etc. */
231			static void fe_add(fe h, const fe f, const fe g) {
232			unsigned i;
233	✓✓	143059080	for (i = 0; i < 10; i++) {
234		62199600	h[i] = f[i] + g[i];
235			}
236		6219960	}
237
238			/* h = f - g
239			* Can overlap h with f or g.
240			*
241			* Preconditions:
242			* \|f\| bounded by 1.12^25,1.12^24,1.12^25,1.12^24,etc.
243			* \|g\| bounded by 1.12^25,1.12^24,1.12^25,1.12^24,etc.
244			*
245			* Postconditions:
246			* \|h\| bounded by 1.12^26,1.12^25,1.12^26,1.12^25,etc. */
247			static void fe_sub(fe h, const fe f, const fe g) {
248			unsigned i;
249	✓✓	143059080	for (i = 0; i < 10; i++) {
250		62199600	h[i] = f[i] - g[i];
251			}
252		6219960	}
253
254			/* h = f * g
255			* Can overlap h with f or g.
256			*
257			* Preconditions:
258			* \|f\| bounded by 1.652^26,1.652^25,1.652^26,1.652^25,etc.
259			* \|g\| bounded by 1.652^26,1.652^25,1.652^26,1.652^25,etc.
260			*
261			* Postconditions:
262			* \|h\| bounded by 1.012^25,1.012^24,1.012^25,1.012^24,etc.
263			*
264			* Notes on implementation strategy:
265			*
266			* Using schoolbook multiplication.
267			* Karatsuba would save a little in some cost models.
268			*
269			* Most multiplications by 2 and 19 are 32-bit precomputations;
270			* cheaper than 64-bit postcomputations.
271			*
272			* There is one remaining multiplication by 19 in the carry chain;
273			* one *19 precomputation can be merged into this,
274			* but the resulting data flow is considerably less clean.
275			*
276			* There are 12 carries below.
277			* 10 of them are 2-way parallelizable and vectorizable.
278			* Can get away with 11 carries, but then data flow is much deeper.
279			*
280			* With tighter constraints on inputs can squeeze carries into int32. */
281			static void fe_mul(fe h, const fe f, const fe g) {
282		15696252	int32_t f0 = f[0];
283		7848126	int32_t f1 = f[1];
284		7848126	int32_t f2 = f[2];
285		7848126	int32_t f3 = f[3];
286		7848126	int32_t f4 = f[4];
287		7848126	int32_t f5 = f[5];
288		7848126	int32_t f6 = f[6];
289		7848126	int32_t f7 = f[7];
290		7848126	int32_t f8 = f[8];
291		7848126	int32_t f9 = f[9];
292		7848126	int32_t g0 = g[0];
293		7848126	int32_t g1 = g[1];
294		7848126	int32_t g2 = g[2];
295		7848126	int32_t g3 = g[3];
296		7848126	int32_t g4 = g[4];
297		7848126	int32_t g5 = g[5];
298		7848126	int32_t g6 = g[6];
299		7848126	int32_t g7 = g[7];
300		7848126	int32_t g8 = g[8];
301		7848126	int32_t g9 = g[9];
302		7848126	int32_t g1_19 = 19 * g1; /* 1.9593752^29 /
303		7848126	int32_t g2_19 = 19 * g2; /* 1.9593752^30; still ok /
304		7848126	int32_t g3_19 = 19 * g3;
305		7848126	int32_t g4_19 = 19 * g4;
306		7848126	int32_t g5_19 = 19 * g5;
307		7848126	int32_t g6_19 = 19 * g6;
308		7848126	int32_t g7_19 = 19 * g7;
309		7848126	int32_t g8_19 = 19 * g8;
310		7848126	int32_t g9_19 = 19 * g9;
311		7848126	int32_t f1_2 = 2 * f1;
312		7848126	int32_t f3_2 = 2 * f3;
313		7848126	int32_t f5_2 = 2 * f5;
314		7848126	int32_t f7_2 = 2 * f7;
315		7848126	int32_t f9_2 = 2 * f9;
316		7848126	int64_t f0g0 = f0 * (int64_t) g0;
317		7848126	int64_t f0g1 = f0 * (int64_t) g1;
318		7848126	int64_t f0g2 = f0 * (int64_t) g2;
319		7848126	int64_t f0g3 = f0 * (int64_t) g3;
320		7848126	int64_t f0g4 = f0 * (int64_t) g4;
321		7848126	int64_t f0g5 = f0 * (int64_t) g5;
322		7848126	int64_t f0g6 = f0 * (int64_t) g6;
323		7848126	int64_t f0g7 = f0 * (int64_t) g7;
324		7848126	int64_t f0g8 = f0 * (int64_t) g8;
325		7848126	int64_t f0g9 = f0 * (int64_t) g9;
326		7848126	int64_t f1g0 = f1 * (int64_t) g0;
327		7848126	int64_t f1g1_2 = f1_2 * (int64_t) g1;
328		7848126	int64_t f1g2 = f1 * (int64_t) g2;
329		7848126	int64_t f1g3_2 = f1_2 * (int64_t) g3;
330		7848126	int64_t f1g4 = f1 * (int64_t) g4;
331		7848126	int64_t f1g5_2 = f1_2 * (int64_t) g5;
332		7848126	int64_t f1g6 = f1 * (int64_t) g6;
333		7848126	int64_t f1g7_2 = f1_2 * (int64_t) g7;
334		7848126	int64_t f1g8 = f1 * (int64_t) g8;
335		7848126	int64_t f1g9_38 = f1_2 * (int64_t) g9_19;
336		7848126	int64_t f2g0 = f2 * (int64_t) g0;
337		7848126	int64_t f2g1 = f2 * (int64_t) g1;
338		7848126	int64_t f2g2 = f2 * (int64_t) g2;
339		7848126	int64_t f2g3 = f2 * (int64_t) g3;
340		7848126	int64_t f2g4 = f2 * (int64_t) g4;
341		7848126	int64_t f2g5 = f2 * (int64_t) g5;
342		7848126	int64_t f2g6 = f2 * (int64_t) g6;
343		7848126	int64_t f2g7 = f2 * (int64_t) g7;
344		7848126	int64_t f2g8_19 = f2 * (int64_t) g8_19;
345		7848126	int64_t f2g9_19 = f2 * (int64_t) g9_19;
346		7848126	int64_t f3g0 = f3 * (int64_t) g0;
347		7848126	int64_t f3g1_2 = f3_2 * (int64_t) g1;
348		7848126	int64_t f3g2 = f3 * (int64_t) g2;
349		7848126	int64_t f3g3_2 = f3_2 * (int64_t) g3;
350		7848126	int64_t f3g4 = f3 * (int64_t) g4;
351		7848126	int64_t f3g5_2 = f3_2 * (int64_t) g5;
352		7848126	int64_t f3g6 = f3 * (int64_t) g6;
353		7848126	int64_t f3g7_38 = f3_2 * (int64_t) g7_19;
354		7848126	int64_t f3g8_19 = f3 * (int64_t) g8_19;
355		7848126	int64_t f3g9_38 = f3_2 * (int64_t) g9_19;
356		7848126	int64_t f4g0 = f4 * (int64_t) g0;
357		7848126	int64_t f4g1 = f4 * (int64_t) g1;
358		7848126	int64_t f4g2 = f4 * (int64_t) g2;
359		7848126	int64_t f4g3 = f4 * (int64_t) g3;
360		7848126	int64_t f4g4 = f4 * (int64_t) g4;
361		7848126	int64_t f4g5 = f4 * (int64_t) g5;
362		7848126	int64_t f4g6_19 = f4 * (int64_t) g6_19;
363		7848126	int64_t f4g7_19 = f4 * (int64_t) g7_19;
364		7848126	int64_t f4g8_19 = f4 * (int64_t) g8_19;
365		7848126	int64_t f4g9_19 = f4 * (int64_t) g9_19;
366		7848126	int64_t f5g0 = f5 * (int64_t) g0;
367		7848126	int64_t f5g1_2 = f5_2 * (int64_t) g1;
368		7848126	int64_t f5g2 = f5 * (int64_t) g2;
369		7848126	int64_t f5g3_2 = f5_2 * (int64_t) g3;
370		7848126	int64_t f5g4 = f5 * (int64_t) g4;
371		7848126	int64_t f5g5_38 = f5_2 * (int64_t) g5_19;
372		7848126	int64_t f5g6_19 = f5 * (int64_t) g6_19;
373		7848126	int64_t f5g7_38 = f5_2 * (int64_t) g7_19;
374		7848126	int64_t f5g8_19 = f5 * (int64_t) g8_19;
375		7848126	int64_t f5g9_38 = f5_2 * (int64_t) g9_19;
376		7848126	int64_t f6g0 = f6 * (int64_t) g0;
377		7848126	int64_t f6g1 = f6 * (int64_t) g1;
378		7848126	int64_t f6g2 = f6 * (int64_t) g2;
379		7848126	int64_t f6g3 = f6 * (int64_t) g3;
380		7848126	int64_t f6g4_19 = f6 * (int64_t) g4_19;
381		7848126	int64_t f6g5_19 = f6 * (int64_t) g5_19;
382		7848126	int64_t f6g6_19 = f6 * (int64_t) g6_19;
383		7848126	int64_t f6g7_19 = f6 * (int64_t) g7_19;
384		7848126	int64_t f6g8_19 = f6 * (int64_t) g8_19;
385		7848126	int64_t f6g9_19 = f6 * (int64_t) g9_19;
386		7848126	int64_t f7g0 = f7 * (int64_t) g0;
387		7848126	int64_t f7g1_2 = f7_2 * (int64_t) g1;
388		7848126	int64_t f7g2 = f7 * (int64_t) g2;
389		7848126	int64_t f7g3_38 = f7_2 * (int64_t) g3_19;
390		7848126	int64_t f7g4_19 = f7 * (int64_t) g4_19;
391		7848126	int64_t f7g5_38 = f7_2 * (int64_t) g5_19;
392		7848126	int64_t f7g6_19 = f7 * (int64_t) g6_19;
393		7848126	int64_t f7g7_38 = f7_2 * (int64_t) g7_19;
394		7848126	int64_t f7g8_19 = f7 * (int64_t) g8_19;
395		7848126	int64_t f7g9_38 = f7_2 * (int64_t) g9_19;
396		7848126	int64_t f8g0 = f8 * (int64_t) g0;
397		7848126	int64_t f8g1 = f8 * (int64_t) g1;
398		7848126	int64_t f8g2_19 = f8 * (int64_t) g2_19;
399		7848126	int64_t f8g3_19 = f8 * (int64_t) g3_19;
400		7848126	int64_t f8g4_19 = f8 * (int64_t) g4_19;
401		7848126	int64_t f8g5_19 = f8 * (int64_t) g5_19;
402		7848126	int64_t f8g6_19 = f8 * (int64_t) g6_19;
403		7848126	int64_t f8g7_19 = f8 * (int64_t) g7_19;
404		7848126	int64_t f8g8_19 = f8 * (int64_t) g8_19;
405		7848126	int64_t f8g9_19 = f8 * (int64_t) g9_19;
406		7848126	int64_t f9g0 = f9 * (int64_t) g0;
407		7848126	int64_t f9g1_38 = f9_2 * (int64_t) g1_19;
408		7848126	int64_t f9g2_19 = f9 * (int64_t) g2_19;
409		7848126	int64_t f9g3_38 = f9_2 * (int64_t) g3_19;
410		7848126	int64_t f9g4_19 = f9 * (int64_t) g4_19;
411		7848126	int64_t f9g5_38 = f9_2 * (int64_t) g5_19;
412		7848126	int64_t f9g6_19 = f9 * (int64_t) g6_19;
413		7848126	int64_t f9g7_38 = f9_2 * (int64_t) g7_19;
414		7848126	int64_t f9g8_19 = f9 * (int64_t) g8_19;
415		7848126	int64_t f9g9_38 = f9_2 * (int64_t) g9_19;
416		7848126	int64_t h0 = f0g0+f1g9_38+f2g8_19+f3g7_38+f4g6_19+f5g5_38+f6g4_19+f7g3_38+f8g2_19+f9g1_38;
417		7848126	int64_t h1 = f0g1+f1g0 +f2g9_19+f3g8_19+f4g7_19+f5g6_19+f6g5_19+f7g4_19+f8g3_19+f9g2_19;
418		7848126	int64_t h2 = f0g2+f1g1_2 +f2g0 +f3g9_38+f4g8_19+f5g7_38+f6g6_19+f7g5_38+f8g4_19+f9g3_38;
419		7848126	int64_t h3 = f0g3+f1g2 +f2g1 +f3g0 +f4g9_19+f5g8_19+f6g7_19+f7g6_19+f8g5_19+f9g4_19;
420		7848126	int64_t h4 = f0g4+f1g3_2 +f2g2 +f3g1_2 +f4g0 +f5g9_38+f6g8_19+f7g7_38+f8g6_19+f9g5_38;
421		7848126	int64_t h5 = f0g5+f1g4 +f2g3 +f3g2 +f4g1 +f5g0 +f6g9_19+f7g8_19+f8g7_19+f9g6_19;
422		7848126	int64_t h6 = f0g6+f1g5_2 +f2g4 +f3g3_2 +f4g2 +f5g1_2 +f6g0 +f7g9_38+f8g8_19+f9g7_38;
423		7848126	int64_t h7 = f0g7+f1g6 +f2g5 +f3g4 +f4g3 +f5g2 +f6g1 +f7g0 +f8g9_19+f9g8_19;
424		7848126	int64_t h8 = f0g8+f1g7_2 +f2g6 +f3g5_2 +f4g4 +f5g3_2 +f6g2 +f7g1_2 +f8g0 +f9g9_38;
425		7848126	int64_t h9 = f0g9+f1g8 +f2g7 +f3g6 +f4g5 +f5g4 +f6g3 +f7g2 +f8g1 +f9g0 ;
426			int64_t carry0;
427			int64_t carry1;
428			int64_t carry2;
429			int64_t carry3;
430			int64_t carry4;
431			int64_t carry5;
432			int64_t carry6;
433			int64_t carry7;
434			int64_t carry8;
435			int64_t carry9;
436
437			/* \|h0\| <= (1.651.652^52(1+19+19+19+19)+1.651.652^50(38+38+38+38+38))
438			* i.e. \|h0\| <= 1.4*2^60; narrower ranges for h2, h4, h6, h8
439			* \|h1\| <= (1.651.652^51*(1+1+19+19+19+19+19+19+19+19))
440			* i.e. \|h1\| <= 1.72^59; narrower ranges for h3, h5, h7, h9 /
441
442		7848126	carry0 = h0 + (1 << 25); h1 += carry0 >> 26; h0 -= carry0 & kTop38Bits;
443		7848126	carry4 = h4 + (1 << 25); h5 += carry4 >> 26; h4 -= carry4 & kTop38Bits;
444			/* \|h0\| <= 2^25 */
445			/* \|h4\| <= 2^25 */
446			/* \|h1\| <= 1.712^59 /
447			/* \|h5\| <= 1.712^59 /
448
449		7848126	carry1 = h1 + (1 << 24); h2 += carry1 >> 25; h1 -= carry1 & kTop39Bits;
450		7848126	carry5 = h5 + (1 << 24); h6 += carry5 >> 25; h5 -= carry5 & kTop39Bits;
451			/* \|h1\| <= 2^24; from now on fits into int32 */
452			/* \|h5\| <= 2^24; from now on fits into int32 */
453			/* \|h2\| <= 1.412^60 /
454			/* \|h6\| <= 1.412^60 /
455
456		7848126	carry2 = h2 + (1 << 25); h3 += carry2 >> 26; h2 -= carry2 & kTop38Bits;
457		7848126	carry6 = h6 + (1 << 25); h7 += carry6 >> 26; h6 -= carry6 & kTop38Bits;
458			/* \|h2\| <= 2^25; from now on fits into int32 unchanged */
459			/* \|h6\| <= 2^25; from now on fits into int32 unchanged */
460			/* \|h3\| <= 1.712^59 /
461			/* \|h7\| <= 1.712^59 /
462
463		7848126	carry3 = h3 + (1 << 24); h4 += carry3 >> 25; h3 -= carry3 & kTop39Bits;
464		7848126	carry7 = h7 + (1 << 24); h8 += carry7 >> 25; h7 -= carry7 & kTop39Bits;
465			/* \|h3\| <= 2^24; from now on fits into int32 unchanged */
466			/* \|h7\| <= 2^24; from now on fits into int32 unchanged */
467			/* \|h4\| <= 1.722^34 /
468			/* \|h8\| <= 1.412^60 /
469
470		7848126	carry4 = h4 + (1 << 25); h5 += carry4 >> 26; h4 -= carry4 & kTop38Bits;
471		7848126	carry8 = h8 + (1 << 25); h9 += carry8 >> 26; h8 -= carry8 & kTop38Bits;
472			/* \|h4\| <= 2^25; from now on fits into int32 unchanged */
473			/* \|h8\| <= 2^25; from now on fits into int32 unchanged */
474			/* \|h5\| <= 1.012^24 /
475			/* \|h9\| <= 1.712^59 /
476
477		7848126	carry9 = h9 + (1 << 24); h0 += (carry9 >> 25) * 19; h9 -= carry9 & kTop39Bits;
478			/* \|h9\| <= 2^24; from now on fits into int32 unchanged */
479			/* \|h0\| <= 1.12^39 /
480
481		7848126	carry0 = h0 + (1 << 25); h1 += carry0 >> 26; h0 -= carry0 & kTop38Bits;
482			/* \|h0\| <= 2^25; from now on fits into int32 unchanged */
483			/* \|h1\| <= 1.012^24 /
484
485		7848126	h[0] = h0;
486		7848126	h[1] = h1;
487		7848126	h[2] = h2;
488		7848126	h[3] = h3;
489		7848126	h[4] = h4;
490		7848126	h[5] = h5;
491		7848126	h[6] = h6;
492		7848126	h[7] = h7;
493		7848126	h[8] = h8;
494		7848126	h[9] = h9;
495		7848126	}
496
497			/* h = f * f
498			* Can overlap h with f.
499			*
500			* Preconditions:
501			* \|f\| bounded by 1.652^26,1.652^25,1.652^26,1.652^25,etc.
502			*
503			* Postconditions:
504			* \|h\| bounded by 1.012^25,1.012^24,1.012^25,1.012^24,etc.
505			*
506			* See fe_mul.c for discussion of implementation strategy. */
507			static void fe_sq(fe h, const fe f) {
508		15537704	int32_t f0 = f[0];
509		7768852	int32_t f1 = f[1];
510		7768852	int32_t f2 = f[2];
511		7768852	int32_t f3 = f[3];
512		7768852	int32_t f4 = f[4];
513		7768852	int32_t f5 = f[5];
514		7768852	int32_t f6 = f[6];
515		7768852	int32_t f7 = f[7];
516		7768852	int32_t f8 = f[8];
517		7768852	int32_t f9 = f[9];
518		7768852	int32_t f0_2 = 2 * f0;
519		7768852	int32_t f1_2 = 2 * f1;
520		7768852	int32_t f2_2 = 2 * f2;
521		7768852	int32_t f3_2 = 2 * f3;
522		7768852	int32_t f4_2 = 2 * f4;
523		7768852	int32_t f5_2 = 2 * f5;
524		7768852	int32_t f6_2 = 2 * f6;
525		7768852	int32_t f7_2 = 2 * f7;
526		7768852	int32_t f5_38 = 38 * f5; /* 1.9593752^30 /
527		7768852	int32_t f6_19 = 19 * f6; /* 1.9593752^30 /
528		7768852	int32_t f7_38 = 38 * f7; /* 1.9593752^30 /
529		7768852	int32_t f8_19 = 19 * f8; /* 1.9593752^30 /
530		7768852	int32_t f9_38 = 38 * f9; /* 1.9593752^30 /
531		7768852	int64_t f0f0 = f0 * (int64_t) f0;
532		7768852	int64_t f0f1_2 = f0_2 * (int64_t) f1;
533		7768852	int64_t f0f2_2 = f0_2 * (int64_t) f2;
534		7768852	int64_t f0f3_2 = f0_2 * (int64_t) f3;
535		7768852	int64_t f0f4_2 = f0_2 * (int64_t) f4;
536		7768852	int64_t f0f5_2 = f0_2 * (int64_t) f5;
537		7768852	int64_t f0f6_2 = f0_2 * (int64_t) f6;
538		7768852	int64_t f0f7_2 = f0_2 * (int64_t) f7;
539		7768852	int64_t f0f8_2 = f0_2 * (int64_t) f8;
540		7768852	int64_t f0f9_2 = f0_2 * (int64_t) f9;
541		7768852	int64_t f1f1_2 = f1_2 * (int64_t) f1;
542		7768852	int64_t f1f2_2 = f1_2 * (int64_t) f2;
543		7768852	int64_t f1f3_4 = f1_2 * (int64_t) f3_2;
544		7768852	int64_t f1f4_2 = f1_2 * (int64_t) f4;
545		7768852	int64_t f1f5_4 = f1_2 * (int64_t) f5_2;
546		7768852	int64_t f1f6_2 = f1_2 * (int64_t) f6;
547		7768852	int64_t f1f7_4 = f1_2 * (int64_t) f7_2;
548		7768852	int64_t f1f8_2 = f1_2 * (int64_t) f8;
549		7768852	int64_t f1f9_76 = f1_2 * (int64_t) f9_38;
550		7768852	int64_t f2f2 = f2 * (int64_t) f2;
551		7768852	int64_t f2f3_2 = f2_2 * (int64_t) f3;
552		7768852	int64_t f2f4_2 = f2_2 * (int64_t) f4;
553		7768852	int64_t f2f5_2 = f2_2 * (int64_t) f5;
554		7768852	int64_t f2f6_2 = f2_2 * (int64_t) f6;
555		7768852	int64_t f2f7_2 = f2_2 * (int64_t) f7;
556		7768852	int64_t f2f8_38 = f2_2 * (int64_t) f8_19;
557		7768852	int64_t f2f9_38 = f2 * (int64_t) f9_38;
558		7768852	int64_t f3f3_2 = f3_2 * (int64_t) f3;
559		7768852	int64_t f3f4_2 = f3_2 * (int64_t) f4;
560		7768852	int64_t f3f5_4 = f3_2 * (int64_t) f5_2;
561		7768852	int64_t f3f6_2 = f3_2 * (int64_t) f6;
562		7768852	int64_t f3f7_76 = f3_2 * (int64_t) f7_38;
563		7768852	int64_t f3f8_38 = f3_2 * (int64_t) f8_19;
564		7768852	int64_t f3f9_76 = f3_2 * (int64_t) f9_38;
565		7768852	int64_t f4f4 = f4 * (int64_t) f4;
566		7768852	int64_t f4f5_2 = f4_2 * (int64_t) f5;
567		7768852	int64_t f4f6_38 = f4_2 * (int64_t) f6_19;
568		7768852	int64_t f4f7_38 = f4 * (int64_t) f7_38;
569		7768852	int64_t f4f8_38 = f4_2 * (int64_t) f8_19;
570		7768852	int64_t f4f9_38 = f4 * (int64_t) f9_38;
571		7768852	int64_t f5f5_38 = f5 * (int64_t) f5_38;
572		7768852	int64_t f5f6_38 = f5_2 * (int64_t) f6_19;
573		7768852	int64_t f5f7_76 = f5_2 * (int64_t) f7_38;
574		7768852	int64_t f5f8_38 = f5_2 * (int64_t) f8_19;
575		7768852	int64_t f5f9_76 = f5_2 * (int64_t) f9_38;
576		7768852	int64_t f6f6_19 = f6 * (int64_t) f6_19;
577		7768852	int64_t f6f7_38 = f6 * (int64_t) f7_38;
578		7768852	int64_t f6f8_38 = f6_2 * (int64_t) f8_19;
579		7768852	int64_t f6f9_38 = f6 * (int64_t) f9_38;
580		7768852	int64_t f7f7_38 = f7 * (int64_t) f7_38;
581		7768852	int64_t f7f8_38 = f7_2 * (int64_t) f8_19;
582		7768852	int64_t f7f9_76 = f7_2 * (int64_t) f9_38;
583		7768852	int64_t f8f8_19 = f8 * (int64_t) f8_19;
584		7768852	int64_t f8f9_38 = f8 * (int64_t) f9_38;
585		7768852	int64_t f9f9_38 = f9 * (int64_t) f9_38;
586		7768852	int64_t h0 = f0f0 +f1f9_76+f2f8_38+f3f7_76+f4f6_38+f5f5_38;
587		7768852	int64_t h1 = f0f1_2+f2f9_38+f3f8_38+f4f7_38+f5f6_38;
588		7768852	int64_t h2 = f0f2_2+f1f1_2 +f3f9_76+f4f8_38+f5f7_76+f6f6_19;
589		7768852	int64_t h3 = f0f3_2+f1f2_2 +f4f9_38+f5f8_38+f6f7_38;
590		7768852	int64_t h4 = f0f4_2+f1f3_4 +f2f2 +f5f9_76+f6f8_38+f7f7_38;
591		7768852	int64_t h5 = f0f5_2+f1f4_2 +f2f3_2 +f6f9_38+f7f8_38;
592		7768852	int64_t h6 = f0f6_2+f1f5_4 +f2f4_2 +f3f3_2 +f7f9_76+f8f8_19;
593		7768852	int64_t h7 = f0f7_2+f1f6_2 +f2f5_2 +f3f4_2 +f8f9_38;
594		7768852	int64_t h8 = f0f8_2+f1f7_4 +f2f6_2 +f3f5_4 +f4f4 +f9f9_38;
595		7768852	int64_t h9 = f0f9_2+f1f8_2 +f2f7_2 +f3f6_2 +f4f5_2;
596			int64_t carry0;
597			int64_t carry1;
598			int64_t carry2;
599			int64_t carry3;
600			int64_t carry4;
601			int64_t carry5;
602			int64_t carry6;
603			int64_t carry7;
604			int64_t carry8;
605			int64_t carry9;
606
607		7768852	carry0 = h0 + (1 << 25); h1 += carry0 >> 26; h0 -= carry0 & kTop38Bits;
608		7768852	carry4 = h4 + (1 << 25); h5 += carry4 >> 26; h4 -= carry4 & kTop38Bits;
609
610		7768852	carry1 = h1 + (1 << 24); h2 += carry1 >> 25; h1 -= carry1 & kTop39Bits;
611		7768852	carry5 = h5 + (1 << 24); h6 += carry5 >> 25; h5 -= carry5 & kTop39Bits;
612
613		7768852	carry2 = h2 + (1 << 25); h3 += carry2 >> 26; h2 -= carry2 & kTop38Bits;
614		7768852	carry6 = h6 + (1 << 25); h7 += carry6 >> 26; h6 -= carry6 & kTop38Bits;
615
616		7768852	carry3 = h3 + (1 << 24); h4 += carry3 >> 25; h3 -= carry3 & kTop39Bits;
617		7768852	carry7 = h7 + (1 << 24); h8 += carry7 >> 25; h7 -= carry7 & kTop39Bits;
618
619		7768852	carry4 = h4 + (1 << 25); h5 += carry4 >> 26; h4 -= carry4 & kTop38Bits;
620		7768852	carry8 = h8 + (1 << 25); h9 += carry8 >> 26; h8 -= carry8 & kTop38Bits;
621
622		7768852	carry9 = h9 + (1 << 24); h0 += (carry9 >> 25) * 19; h9 -= carry9 & kTop39Bits;
623
624		7768852	carry0 = h0 + (1 << 25); h1 += carry0 >> 26; h0 -= carry0 & kTop38Bits;
625
626		7768852	h[0] = h0;
627		7768852	h[1] = h1;
628		7768852	h[2] = h2;
629		7768852	h[3] = h3;
630		7768852	h[4] = h4;
631		7768852	h[5] = h5;
632		7768852	h[6] = h6;
633		7768852	h[7] = h7;
634		7768852	h[8] = h8;
635		7768852	h[9] = h9;
636		7768852	}
637
638			static void fe_invert(fe out, const fe z) {
639		12196	fe t0;
640		6098	fe t1;
641		6098	fe t2;
642		6098	fe t3;
643			int i;
644
645		6098	fe_sq(t0, z);
646	✗✓	12196	for (i = 1; i < 1; ++i) {
647			fe_sq(t0, t0);
648			}
649		6098	fe_sq(t1, t0);
650	✓✓	24392	for (i = 1; i < 2; ++i) {
651		6098	fe_sq(t1, t1);
652			}
653		6098	fe_mul(t1, z, t1);
654		6098	fe_mul(t0, t0, t1);
655		6098	fe_sq(t2, t0);
656	✗✓	12196	for (i = 1; i < 1; ++i) {
657			fe_sq(t2, t2);
658			}
659		6098	fe_mul(t1, t1, t2);
660		6098	fe_sq(t2, t1);
661	✓✓	60980	for (i = 1; i < 5; ++i) {
662		24392	fe_sq(t2, t2);
663			}
664		6098	fe_mul(t1, t2, t1);
665		6098	fe_sq(t2, t1);
666	✓✓	121960	for (i = 1; i < 10; ++i) {
667		54882	fe_sq(t2, t2);
668			}
669		6098	fe_mul(t2, t2, t1);
670		6098	fe_sq(t3, t2);
671	✓✓	243920	for (i = 1; i < 20; ++i) {
672		115862	fe_sq(t3, t3);
673			}
674		6098	fe_mul(t2, t3, t2);
675		6098	fe_sq(t2, t2);
676	✓✓	121960	for (i = 1; i < 10; ++i) {
677		54882	fe_sq(t2, t2);
678			}
679		6098	fe_mul(t1, t2, t1);
680		6098	fe_sq(t2, t1);
681	✓✓	609800	for (i = 1; i < 50; ++i) {
682		298802	fe_sq(t2, t2);
683			}
684		6098	fe_mul(t2, t2, t1);
685		6098	fe_sq(t3, t2);
686	✓✓	1219600	for (i = 1; i < 100; ++i) {
687		603702	fe_sq(t3, t3);
688			}
689		6098	fe_mul(t2, t3, t2);
690		6098	fe_sq(t2, t2);
691	✓✓	609800	for (i = 1; i < 50; ++i) {
692		298802	fe_sq(t2, t2);
693			}
694		6098	fe_mul(t1, t2, t1);
695		6098	fe_sq(t1, t1);
696	✓✓	60980	for (i = 1; i < 5; ++i) {
697		24392	fe_sq(t1, t1);
698			}
699		6098	fe_mul(out, t1, t0);
700		6098	}
701
702			/* h = -f
703			*
704			* Preconditions:
705			* \|f\| bounded by 1.12^25,1.12^24,1.12^25,1.12^24,etc.
706			*
707			* Postconditions:
708			* \|h\| bounded by 1.12^25,1.12^24,1.12^25,1.12^24,etc. */
709			static void fe_neg(fe h, const fe f) {
710			unsigned i;
711			for (i = 0; i < 10; i++) {
712			h[i] = -f[i];
713			}
714			}
715
716			/* Replace (f,g) with (g,g) if b == 1;
717			* replace (f,g) with (f,g) if b == 0.
718			*
719			* Preconditions: b in {0,1}. */
720			static void fe_cmov(fe f, const fe g, unsigned b) {
721			b = 0-b;
722			unsigned i;
723			for (i = 0; i < 10; i++) {
724			int32_t x = f[i] ^ g[i];
725			x &= b;
726			f[i] ^= x;
727			}
728			}
729
730			/* return 0 if f == 0
731			* return 1 if f != 0
732			*
733			* Preconditions:
734			* \|f\| bounded by 1.12^26,1.12^25,1.12^26,1.12^25,etc. */
735			static int fe_isnonzero(const fe f) {
736			uint8_t s[32];
737			fe_tobytes(s, f);
738
739			static const uint8_t zero[32] = {0};
740			return timingsafe_memcmp(s, zero, sizeof(zero)) != 0;
741			}
742
743			/* return 1 if f is in {1,3,5,...,q-2}
744			* return 0 if f is in {0,2,4,...,q-1}
745			*
746			* Preconditions:
747			* \|f\| bounded by 1.12^26,1.12^25,1.12^26,1.12^25,etc. */
748			static int fe_isnegative(const fe f) {
749			uint8_t s[32];
750			fe_tobytes(s, f);
751			return s[0] & 1;
752			}
753
754			/* h = 2 * f * f
755			* Can overlap h with f.
756			*
757			* Preconditions:
758			* \|f\| bounded by 1.652^26,1.652^25,1.652^26,1.652^25,etc.
759			*
760			* Postconditions:
761			* \|h\| bounded by 1.012^25,1.012^24,1.012^25,1.012^24,etc.
762			*
763			* See fe_mul.c for discussion of implementation strategy. */
764			static void fe_sq2(fe h, const fe f) {
765			int32_t f0 = f[0];
766			int32_t f1 = f[1];
767			int32_t f2 = f[2];
768			int32_t f3 = f[3];
769			int32_t f4 = f[4];
770			int32_t f5 = f[5];
771			int32_t f6 = f[6];
772			int32_t f7 = f[7];
773			int32_t f8 = f[8];
774			int32_t f9 = f[9];
775			int32_t f0_2 = 2 * f0;
776			int32_t f1_2 = 2 * f1;
777			int32_t f2_2 = 2 * f2;
778			int32_t f3_2 = 2 * f3;
779			int32_t f4_2 = 2 * f4;
780			int32_t f5_2 = 2 * f5;
781			int32_t f6_2 = 2 * f6;
782			int32_t f7_2 = 2 * f7;
783			int32_t f5_38 = 38 * f5; /* 1.9593752^30 /
784			int32_t f6_19 = 19 * f6; /* 1.9593752^30 /
785			int32_t f7_38 = 38 * f7; /* 1.9593752^30 /
786			int32_t f8_19 = 19 * f8; /* 1.9593752^30 /
787			int32_t f9_38 = 38 * f9; /* 1.9593752^30 /
788			int64_t f0f0 = f0 * (int64_t) f0;
789			int64_t f0f1_2 = f0_2 * (int64_t) f1;
790			int64_t f0f2_2 = f0_2 * (int64_t) f2;
791			int64_t f0f3_2 = f0_2 * (int64_t) f3;
792			int64_t f0f4_2 = f0_2 * (int64_t) f4;
793			int64_t f0f5_2 = f0_2 * (int64_t) f5;
794			int64_t f0f6_2 = f0_2 * (int64_t) f6;
795			int64_t f0f7_2 = f0_2 * (int64_t) f7;
796			int64_t f0f8_2 = f0_2 * (int64_t) f8;
797			int64_t f0f9_2 = f0_2 * (int64_t) f9;
798			int64_t f1f1_2 = f1_2 * (int64_t) f1;
799			int64_t f1f2_2 = f1_2 * (int64_t) f2;
800			int64_t f1f3_4 = f1_2 * (int64_t) f3_2;
801			int64_t f1f4_2 = f1_2 * (int64_t) f4;
802			int64_t f1f5_4 = f1_2 * (int64_t) f5_2;
803			int64_t f1f6_2 = f1_2 * (int64_t) f6;
804			int64_t f1f7_4 = f1_2 * (int64_t) f7_2;
805			int64_t f1f8_2 = f1_2 * (int64_t) f8;
806			int64_t f1f9_76 = f1_2 * (int64_t) f9_38;
807			int64_t f2f2 = f2 * (int64_t) f2;
808			int64_t f2f3_2 = f2_2 * (int64_t) f3;
809			int64_t f2f4_2 = f2_2 * (int64_t) f4;
810			int64_t f2f5_2 = f2_2 * (int64_t) f5;
811			int64_t f2f6_2 = f2_2 * (int64_t) f6;
812			int64_t f2f7_2 = f2_2 * (int64_t) f7;
813			int64_t f2f8_38 = f2_2 * (int64_t) f8_19;
814			int64_t f2f9_38 = f2 * (int64_t) f9_38;
815			int64_t f3f3_2 = f3_2 * (int64_t) f3;
816			int64_t f3f4_2 = f3_2 * (int64_t) f4;
817			int64_t f3f5_4 = f3_2 * (int64_t) f5_2;
818			int64_t f3f6_2 = f3_2 * (int64_t) f6;
819			int64_t f3f7_76 = f3_2 * (int64_t) f7_38;
820			int64_t f3f8_38 = f3_2 * (int64_t) f8_19;
821			int64_t f3f9_76 = f3_2 * (int64_t) f9_38;
822			int64_t f4f4 = f4 * (int64_t) f4;
823			int64_t f4f5_2 = f4_2 * (int64_t) f5;
824			int64_t f4f6_38 = f4_2 * (int64_t) f6_19;
825			int64_t f4f7_38 = f4 * (int64_t) f7_38;
826			int64_t f4f8_38 = f4_2 * (int64_t) f8_19;
827			int64_t f4f9_38 = f4 * (int64_t) f9_38;
828			int64_t f5f5_38 = f5 * (int64_t) f5_38;
829			int64_t f5f6_38 = f5_2 * (int64_t) f6_19;
830			int64_t f5f7_76 = f5_2 * (int64_t) f7_38;
831			int64_t f5f8_38 = f5_2 * (int64_t) f8_19;
832			int64_t f5f9_76 = f5_2 * (int64_t) f9_38;
833			int64_t f6f6_19 = f6 * (int64_t) f6_19;
834			int64_t f6f7_38 = f6 * (int64_t) f7_38;
835			int64_t f6f8_38 = f6_2 * (int64_t) f8_19;
836			int64_t f6f9_38 = f6 * (int64_t) f9_38;
837			int64_t f7f7_38 = f7 * (int64_t) f7_38;
838			int64_t f7f8_38 = f7_2 * (int64_t) f8_19;
839			int64_t f7f9_76 = f7_2 * (int64_t) f9_38;
840			int64_t f8f8_19 = f8 * (int64_t) f8_19;
841			int64_t f8f9_38 = f8 * (int64_t) f9_38;
842			int64_t f9f9_38 = f9 * (int64_t) f9_38;
843			int64_t h0 = f0f0 +f1f9_76+f2f8_38+f3f7_76+f4f6_38+f5f5_38;
844			int64_t h1 = f0f1_2+f2f9_38+f3f8_38+f4f7_38+f5f6_38;
845			int64_t h2 = f0f2_2+f1f1_2 +f3f9_76+f4f8_38+f5f7_76+f6f6_19;
846			int64_t h3 = f0f3_2+f1f2_2 +f4f9_38+f5f8_38+f6f7_38;
847			int64_t h4 = f0f4_2+f1f3_4 +f2f2 +f5f9_76+f6f8_38+f7f7_38;
848			int64_t h5 = f0f5_2+f1f4_2 +f2f3_2 +f6f9_38+f7f8_38;
849			int64_t h6 = f0f6_2+f1f5_4 +f2f4_2 +f3f3_2 +f7f9_76+f8f8_19;
850			int64_t h7 = f0f7_2+f1f6_2 +f2f5_2 +f3f4_2 +f8f9_38;
851			int64_t h8 = f0f8_2+f1f7_4 +f2f6_2 +f3f5_4 +f4f4 +f9f9_38;
852			int64_t h9 = f0f9_2+f1f8_2 +f2f7_2 +f3f6_2 +f4f5_2;
853			int64_t carry0;
854			int64_t carry1;
855			int64_t carry2;
856			int64_t carry3;
857			int64_t carry4;
858			int64_t carry5;
859			int64_t carry6;
860			int64_t carry7;
861			int64_t carry8;
862			int64_t carry9;
863
864			h0 += h0;
865			h1 += h1;
866			h2 += h2;
867			h3 += h3;
868			h4 += h4;
869			h5 += h5;
870			h6 += h6;
871			h7 += h7;
872			h8 += h8;
873			h9 += h9;
874
875			carry0 = h0 + (1 << 25); h1 += carry0 >> 26; h0 -= carry0 & kTop38Bits;
876			carry4 = h4 + (1 << 25); h5 += carry4 >> 26; h4 -= carry4 & kTop38Bits;
877
878			carry1 = h1 + (1 << 24); h2 += carry1 >> 25; h1 -= carry1 & kTop39Bits;
879			carry5 = h5 + (1 << 24); h6 += carry5 >> 25; h5 -= carry5 & kTop39Bits;
880
881			carry2 = h2 + (1 << 25); h3 += carry2 >> 26; h2 -= carry2 & kTop38Bits;
882			carry6 = h6 + (1 << 25); h7 += carry6 >> 26; h6 -= carry6 & kTop38Bits;
883
884			carry3 = h3 + (1 << 24); h4 += carry3 >> 25; h3 -= carry3 & kTop39Bits;
885			carry7 = h7 + (1 << 24); h8 += carry7 >> 25; h7 -= carry7 & kTop39Bits;
886
887			carry4 = h4 + (1 << 25); h5 += carry4 >> 26; h4 -= carry4 & kTop38Bits;
888			carry8 = h8 + (1 << 25); h9 += carry8 >> 26; h8 -= carry8 & kTop38Bits;
889
890			carry9 = h9 + (1 << 24); h0 += (carry9 >> 25) * 19; h9 -= carry9 & kTop39Bits;
891
892			carry0 = h0 + (1 << 25); h1 += carry0 >> 26; h0 -= carry0 & kTop38Bits;
893
894			h[0] = h0;
895			h[1] = h1;
896			h[2] = h2;
897			h[3] = h3;
898			h[4] = h4;
899			h[5] = h5;
900			h[6] = h6;
901			h[7] = h7;
902			h[8] = h8;
903			h[9] = h9;
904			}
905
906			static void fe_pow22523(fe out, const fe z) {
907			fe t0;
908			fe t1;
909			fe t2;
910			int i;
911
912			fe_sq(t0, z);
913			for (i = 1; i < 1; ++i) {
914			fe_sq(t0, t0);
915			}
916			fe_sq(t1, t0);
917			for (i = 1; i < 2; ++i) {
918			fe_sq(t1, t1);
919			}
920			fe_mul(t1, z, t1);
921			fe_mul(t0, t0, t1);
922			fe_sq(t0, t0);
923			for (i = 1; i < 1; ++i) {
924			fe_sq(t0, t0);
925			}
926			fe_mul(t0, t1, t0);
927			fe_sq(t1, t0);
928			for (i = 1; i < 5; ++i) {
929			fe_sq(t1, t1);
930			}
931			fe_mul(t0, t1, t0);
932			fe_sq(t1, t0);
933			for (i = 1; i < 10; ++i) {
934			fe_sq(t1, t1);
935			}
936			fe_mul(t1, t1, t0);
937			fe_sq(t2, t1);
938			for (i = 1; i < 20; ++i) {
939			fe_sq(t2, t2);
940			}
941			fe_mul(t1, t2, t1);
942			fe_sq(t1, t1);
943			for (i = 1; i < 10; ++i) {
944			fe_sq(t1, t1);
945			}
946			fe_mul(t0, t1, t0);
947			fe_sq(t1, t0);
948			for (i = 1; i < 50; ++i) {
949			fe_sq(t1, t1);
950			}
951			fe_mul(t1, t1, t0);
952			fe_sq(t2, t1);
953			for (i = 1; i < 100; ++i) {
954			fe_sq(t2, t2);
955			}
956			fe_mul(t1, t2, t1);
957			fe_sq(t1, t1);
958			for (i = 1; i < 50; ++i) {
959			fe_sq(t1, t1);
960			}
961			fe_mul(t0, t1, t0);
962			fe_sq(t0, t0);
963			for (i = 1; i < 2; ++i) {
964			fe_sq(t0, t0);
965			}
966			fe_mul(out, t0, z);
967			}
968
969			void x25519_ge_tobytes(uint8_t s, const ge_p2 h) {
970			fe recip;
971			fe x;
972			fe y;
973
974			fe_invert(recip, h->Z);
975			fe_mul(x, h->X, recip);
976			fe_mul(y, h->Y, recip);
977			fe_tobytes(s, y);
978			s[31] ^= fe_isnegative(x) << 7;
979			}
980
981			#ifdef ED25519
982			static void ge_p3_tobytes(uint8_t s, const ge_p3 h) {
983			fe recip;
984			fe x;
985			fe y;
986
987			fe_invert(recip, h->Z);
988			fe_mul(x, h->X, recip);
989			fe_mul(y, h->Y, recip);
990			fe_tobytes(s, y);
991			s[31] ^= fe_isnegative(x) << 7;
992			}
993			#endif
994
995			static const fe d = {-10913610, 13857413, -15372611, 6949391, 114729,
996			-8787816, -6275908, -3247719, -18696448, -12055116};
997
998			static const fe sqrtm1 = {-32595792, -7943725, 9377950, 3500415, 12389472,
999			-272473, -25146209, -2005654, 326686, 11406482};
1000
1001			int x25519_ge_frombytes_vartime(ge_p3 h, const uint8_t s) {
1002			fe u;
1003			fe v;
1004			fe v3;
1005			fe vxx;
1006			fe check;
1007
1008			fe_frombytes(h->Y, s);
1009			fe_1(h->Z);
1010			fe_sq(u, h->Y);
1011			fe_mul(v, u, d);
1012			fe_sub(u, u, h->Z); /* u = y^2-1 */
1013			fe_add(v, v, h->Z); /* v = dy^2+1 */
1014
1015			fe_sq(v3, v);
1016			fe_mul(v3, v3, v); /* v3 = v^3 */
1017			fe_sq(h->X, v3);
1018			fe_mul(h->X, h->X, v);
1019			fe_mul(h->X, h->X, u); /* x = uv^7 */
1020
1021			fe_pow22523(h->X, h->X); /* x = (uv^7)^((q-5)/8) */
1022			fe_mul(h->X, h->X, v3);
1023			fe_mul(h->X, h->X, u); /* x = uv^3(uv^7)^((q-5)/8) */
1024
1025			fe_sq(vxx, h->X);
1026			fe_mul(vxx, vxx, v);
1027			fe_sub(check, vxx, u); /* vx^2-u */
1028			if (fe_isnonzero(check)) {
1029			fe_add(check, vxx, u); /* vx^2+u */
1030			if (fe_isnonzero(check)) {
1031			return -1;
1032			}
1033			fe_mul(h->X, h->X, sqrtm1);
1034			}
1035
1036			if (fe_isnegative(h->X) != (s[31] >> 7)) {
1037			fe_neg(h->X, h->X);
1038			}
1039
1040			fe_mul(h->T, h->X, h->Y);
1041			return 0;
1042			}
1043
1044			static void ge_p2_0(ge_p2 *h) {
1045			fe_0(h->X);
1046			fe_1(h->Y);
1047			fe_1(h->Z);
1048			}
1049
1050			static void ge_p3_0(ge_p3 *h) {
1051			fe_0(h->X);
1052			fe_1(h->Y);
1053			fe_1(h->Z);
1054			fe_0(h->T);
1055			}
1056
1057			static void ge_cached_0(ge_cached *h) {
1058			fe_1(h->YplusX);
1059			fe_1(h->YminusX);
1060			fe_1(h->Z);
1061			fe_0(h->T2d);
1062			}
1063
1064			static void ge_precomp_0(ge_precomp *h) {
1065			fe_1(h->yplusx);
1066			fe_1(h->yminusx);
1067			fe_0(h->xy2d);
1068			}
1069
1070			/* r = p */
1071			static void ge_p3_to_p2(ge_p2 r, const ge_p3 p) {
1072			fe_copy(r->X, p->X);
1073			fe_copy(r->Y, p->Y);
1074			fe_copy(r->Z, p->Z);
1075			}
1076
1077			static const fe d2 = {-21827239, -5839606, -30745221, 13898782, 229458,
1078			15978800, -12551817, -6495438, 29715968, 9444199};
1079
1080			/* r = p */
1081			void x25519_ge_p3_to_cached(ge_cached r, const ge_p3 p) {
1082			fe_add(r->YplusX, p->Y, p->X);
1083			fe_sub(r->YminusX, p->Y, p->X);
1084			fe_copy(r->Z, p->Z);
1085			fe_mul(r->T2d, p->T, d2);
1086			}
1087
1088			/* r = p */
1089			void x25519_ge_p1p1_to_p2(ge_p2 r, const ge_p1p1 p) {
1090			fe_mul(r->X, p->X, p->T);
1091			fe_mul(r->Y, p->Y, p->Z);
1092			fe_mul(r->Z, p->Z, p->T);
1093			}
1094
1095			/* r = p */
1096			void x25519_ge_p1p1_to_p3(ge_p3 r, const ge_p1p1 p) {
1097			fe_mul(r->X, p->X, p->T);
1098			fe_mul(r->Y, p->Y, p->Z);
1099			fe_mul(r->Z, p->Z, p->T);
1100			fe_mul(r->T, p->X, p->Y);
1101			}
1102
1103			/* r = p */
1104			static void ge_p1p1_to_cached(ge_cached r, const ge_p1p1 p) {
1105			ge_p3 t;
1106			x25519_ge_p1p1_to_p3(&t, p);
1107			x25519_ge_p3_to_cached(r, &t);
1108			}
1109
1110			/* r = 2 * p */
1111			static void ge_p2_dbl(ge_p1p1 r, const ge_p2 p) {
1112			fe t0;
1113
1114			fe_sq(r->X, p->X);
1115			fe_sq(r->Z, p->Y);
1116			fe_sq2(r->T, p->Z);
1117			fe_add(r->Y, p->X, p->Y);
1118			fe_sq(t0, r->Y);
1119			fe_add(r->Y, r->Z, r->X);
1120			fe_sub(r->Z, r->Z, r->X);
1121			fe_sub(r->X, t0, r->Y);
1122			fe_sub(r->T, r->T, r->Z);
1123			}
1124
1125			/* r = 2 * p */
1126			static void ge_p3_dbl(ge_p1p1 r, const ge_p3 p) {
1127			ge_p2 q;
1128			ge_p3_to_p2(&q, p);
1129			ge_p2_dbl(r, &q);
1130			}
1131
1132			/* r = p + q */
1133			static void ge_madd(ge_p1p1 r, const ge_p3 p, const ge_precomp *q) {
1134			fe t0;
1135
1136			fe_add(r->X, p->Y, p->X);
1137			fe_sub(r->Y, p->Y, p->X);
1138			fe_mul(r->Z, r->X, q->yplusx);
1139			fe_mul(r->Y, r->Y, q->yminusx);
1140			fe_mul(r->T, q->xy2d, p->T);
1141			fe_add(t0, p->Z, p->Z);
1142			fe_sub(r->X, r->Z, r->Y);
1143			fe_add(r->Y, r->Z, r->Y);
1144			fe_add(r->Z, t0, r->T);
1145			fe_sub(r->T, t0, r->T);
1146			}
1147
1148			#ifdef ED25519
1149			/* r = p - q */
1150			static void ge_msub(ge_p1p1 r, const ge_p3 p, const ge_precomp *q) {
1151			fe t0;
1152
1153			fe_add(r->X, p->Y, p->X);
1154			fe_sub(r->Y, p->Y, p->X);
1155			fe_mul(r->Z, r->X, q->yminusx);
1156			fe_mul(r->Y, r->Y, q->yplusx);
1157			fe_mul(r->T, q->xy2d, p->T);
1158			fe_add(t0, p->Z, p->Z);
1159			fe_sub(r->X, r->Z, r->Y);
1160			fe_add(r->Y, r->Z, r->Y);
1161			fe_sub(r->Z, t0, r->T);
1162			fe_add(r->T, t0, r->T);
1163			}
1164			#endif
1165
1166			/* r = p + q */
1167			void x25519_ge_add(ge_p1p1 r, const ge_p3 p, const ge_cached *q) {
1168			fe t0;
1169
1170			fe_add(r->X, p->Y, p->X);
1171			fe_sub(r->Y, p->Y, p->X);
1172			fe_mul(r->Z, r->X, q->YplusX);
1173			fe_mul(r->Y, r->Y, q->YminusX);
1174			fe_mul(r->T, q->T2d, p->T);
1175			fe_mul(r->X, p->Z, q->Z);
1176			fe_add(t0, r->X, r->X);
1177			fe_sub(r->X, r->Z, r->Y);
1178			fe_add(r->Y, r->Z, r->Y);
1179			fe_add(r->Z, t0, r->T);
1180			fe_sub(r->T, t0, r->T);
1181			}
1182
1183			/* r = p - q */
1184			void x25519_ge_sub(ge_p1p1 r, const ge_p3 p, const ge_cached *q) {
1185			fe t0;
1186
1187			fe_add(r->X, p->Y, p->X);
1188			fe_sub(r->Y, p->Y, p->X);
1189			fe_mul(r->Z, r->X, q->YminusX);
1190			fe_mul(r->Y, r->Y, q->YplusX);
1191			fe_mul(r->T, q->T2d, p->T);
1192			fe_mul(r->X, p->Z, q->Z);
1193			fe_add(t0, r->X, r->X);
1194			fe_sub(r->X, r->Z, r->Y);
1195			fe_add(r->Y, r->Z, r->Y);
1196			fe_sub(r->Z, t0, r->T);
1197			fe_add(r->T, t0, r->T);
1198			}
1199
1200			static uint8_t equal(signed char b, signed char c) {
1201			uint8_t ub = b;
1202			uint8_t uc = c;
1203			uint8_t x = ub ^ uc; /* 0: yes; 1..255: no */
1204			uint32_t y = x; /* 0: yes; 1..255: no */
1205			y -= 1; /* 4294967295: yes; 0..254: no */
1206			y >>= 31; /* 1: yes; 0: no */
1207			return y;
1208			}
1209
1210			static void cmov(ge_precomp t, const ge_precomp u, uint8_t b) {
1211			fe_cmov(t->yplusx, u->yplusx, b);
1212			fe_cmov(t->yminusx, u->yminusx, b);
1213			fe_cmov(t->xy2d, u->xy2d, b);
1214			}
1215
1216			void x25519_ge_scalarmult_small_precomp(
1217			ge_p3 h, const uint8_t a[32], const uint8_t precomp_table[15 2 * 32]) {
1218			/* precomp_table is first expanded into matching \|ge_precomp\|
1219			* elements. */
1220			ge_precomp multiples[15];
1221
1222			unsigned i;
1223			for (i = 0; i < 15; i++) {
1224			const uint8_t bytes = &precomp_table[i(2 * 32)];
1225			fe x, y;
1226			fe_frombytes(x, bytes);
1227			fe_frombytes(y, bytes + 32);
1228
1229			ge_precomp *out = &multiples[i];
1230			fe_add(out->yplusx, y, x);
1231			fe_sub(out->yminusx, y, x);
1232			fe_mul(out->xy2d, x, y);
1233			fe_mul(out->xy2d, out->xy2d, d2);
1234			}
1235
1236			/* See the comment above \|k25519SmallPrecomp\| about the structure of the
1237			* precomputed elements. This loop does 64 additions and 64 doublings to
1238			* calculate the result. */
1239			ge_p3_0(h);
1240
1241			for (i = 63; i < 64; i--) {
1242			unsigned j;
1243			signed char index = 0;
1244
1245			for (j = 0; j < 4; j++) {
1246			const uint8_t bit = 1 & (a[(8 * j) + (i / 8)] >> (i & 7));
1247			index \|= (bit << j);
1248			}
1249
1250			ge_precomp e;
1251			ge_precomp_0(&e);
1252
1253			for (j = 1; j < 16; j++) {
1254			cmov(&e, &multiples[j-1], equal(index, j));
1255			}
1256
1257			ge_cached cached;
1258			ge_p1p1 r;
1259			x25519_ge_p3_to_cached(&cached, h);
1260			x25519_ge_add(&r, h, &cached);
1261			x25519_ge_p1p1_to_p3(h, &r);
1262
1263			ge_madd(&r, h, &e);
1264			x25519_ge_p1p1_to_p3(h, &r);
1265			}
1266			}
1267
1268			#if defined(OPENSSL_SMALL)
1269
1270			/* This block of code replaces the standard base-point table with a much smaller
1271			* one. The standard table is 30,720 bytes while this one is just 960.
1272			*
1273			* This table contains 15 pairs of group elements, (x, y), where each field
1274			* element is serialised with \|fe_tobytes\|. If \|i\| is the index of the group
1275			* element then consider i+1 as a four-bit number: (i₀, i₁, i₂, i₃) (where i₀
1276			* is the most significant bit). The value of the group element is then:
1277			* (i₀×2^192 + i₁×2^128 + i₂×2^64 + i₃)G, where G is the generator. */
1278			static const uint8_t k25519SmallPrecomp[15 * 2 * 32] = {
1279			0x1a, 0xd5, 0x25, 0x8f, 0x60, 0x2d, 0x56, 0xc9, 0xb2, 0xa7, 0x25, 0x95,
1280			0x60, 0xc7, 0x2c, 0x69, 0x5c, 0xdc, 0xd6, 0xfd, 0x31, 0xe2, 0xa4, 0xc0,
1281			0xfe, 0x53, 0x6e, 0xcd, 0xd3, 0x36, 0x69, 0x21, 0x58, 0x66, 0x66, 0x66,
1282			0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
1283			0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
1284			0x66, 0x66, 0x66, 0x66, 0x02, 0xa2, 0xed, 0xf4, 0x8f, 0x6b, 0x0b, 0x3e,
1285			0xeb, 0x35, 0x1a, 0xd5, 0x7e, 0xdb, 0x78, 0x00, 0x96, 0x8a, 0xa0, 0xb4,
1286			0xcf, 0x60, 0x4b, 0xd4, 0xd5, 0xf9, 0x2d, 0xbf, 0x88, 0xbd, 0x22, 0x62,
1287			0x13, 0x53, 0xe4, 0x82, 0x57, 0xfa, 0x1e, 0x8f, 0x06, 0x2b, 0x90, 0xba,
1288			0x08, 0xb6, 0x10, 0x54, 0x4f, 0x7c, 0x1b, 0x26, 0xed, 0xda, 0x6b, 0xdd,
1289			0x25, 0xd0, 0x4e, 0xea, 0x42, 0xbb, 0x25, 0x03, 0xa2, 0xfb, 0xcc, 0x61,
1290			0x67, 0x06, 0x70, 0x1a, 0xc4, 0x78, 0x3a, 0xff, 0x32, 0x62, 0xdd, 0x2c,
1291			0xab, 0x50, 0x19, 0x3b, 0xf2, 0x9b, 0x7d, 0xb8, 0xfd, 0x4f, 0x29, 0x9c,
1292			0xa7, 0x91, 0xba, 0x0e, 0x46, 0x5e, 0x51, 0xfe, 0x1d, 0xbf, 0xe5, 0xe5,
1293			0x9b, 0x95, 0x0d, 0x67, 0xf8, 0xd1, 0xb5, 0x5a, 0xa1, 0x93, 0x2c, 0xc3,
1294			0xde, 0x0e, 0x97, 0x85, 0x2d, 0x7f, 0xea, 0xab, 0x3e, 0x47, 0x30, 0x18,
1295			0x24, 0xe8, 0xb7, 0x60, 0xae, 0x47, 0x80, 0xfc, 0xe5, 0x23, 0xe7, 0xc2,
1296			0xc9, 0x85, 0xe6, 0x98, 0xa0, 0x29, 0x4e, 0xe1, 0x84, 0x39, 0x2d, 0x95,
1297			0x2c, 0xf3, 0x45, 0x3c, 0xff, 0xaf, 0x27, 0x4c, 0x6b, 0xa6, 0xf5, 0x4b,
1298			0x11, 0xbd, 0xba, 0x5b, 0x9e, 0xc4, 0xa4, 0x51, 0x1e, 0xbe, 0xd0, 0x90,
1299			0x3a, 0x9c, 0xc2, 0x26, 0xb6, 0x1e, 0xf1, 0x95, 0x7d, 0xc8, 0x6d, 0x52,
1300			0xe6, 0x99, 0x2c, 0x5f, 0x9a, 0x96, 0x0c, 0x68, 0x29, 0xfd, 0xe2, 0xfb,
1301			0xe6, 0xbc, 0xec, 0x31, 0x08, 0xec, 0xe6, 0xb0, 0x53, 0x60, 0xc3, 0x8c,
1302			0xbe, 0xc1, 0xb3, 0x8a, 0x8f, 0xe4, 0x88, 0x2b, 0x55, 0xe5, 0x64, 0x6e,
1303			0x9b, 0xd0, 0xaf, 0x7b, 0x64, 0x2a, 0x35, 0x25, 0x10, 0x52, 0xc5, 0x9e,
1304			0x58, 0x11, 0x39, 0x36, 0x45, 0x51, 0xb8, 0x39, 0x93, 0xfc, 0x9d, 0x6a,
1305			0xbe, 0x58, 0xcb, 0xa4, 0x0f, 0x51, 0x3c, 0x38, 0x05, 0xca, 0xab, 0x43,
1306			0x63, 0x0e, 0xf3, 0x8b, 0x41, 0xa6, 0xf8, 0x9b, 0x53, 0x70, 0x80, 0x53,
1307			0x86, 0x5e, 0x8f, 0xe3, 0xc3, 0x0d, 0x18, 0xc8, 0x4b, 0x34, 0x1f, 0xd8,
1308			0x1d, 0xbc, 0xf2, 0x6d, 0x34, 0x3a, 0xbe, 0xdf, 0xd9, 0xf6, 0xf3, 0x89,
1309			0xa1, 0xe1, 0x94, 0x9f, 0x5d, 0x4c, 0x5d, 0xe9, 0xa1, 0x49, 0x92, 0xef,
1310			0x0e, 0x53, 0x81, 0x89, 0x58, 0x87, 0xa6, 0x37, 0xf1, 0xdd, 0x62, 0x60,
1311			0x63, 0x5a, 0x9d, 0x1b, 0x8c, 0xc6, 0x7d, 0x52, 0xea, 0x70, 0x09, 0x6a,
1312			0xe1, 0x32, 0xf3, 0x73, 0x21, 0x1f, 0x07, 0x7b, 0x7c, 0x9b, 0x49, 0xd8,
1313			0xc0, 0xf3, 0x25, 0x72, 0x6f, 0x9d, 0xed, 0x31, 0x67, 0x36, 0x36, 0x54,
1314			0x40, 0x92, 0x71, 0xe6, 0x11, 0x28, 0x11, 0xad, 0x93, 0x32, 0x85, 0x7b,
1315			0x3e, 0xb7, 0x3b, 0x49, 0x13, 0x1c, 0x07, 0xb0, 0x2e, 0x93, 0xaa, 0xfd,
1316			0xfd, 0x28, 0x47, 0x3d, 0x8d, 0xd2, 0xda, 0xc7, 0x44, 0xd6, 0x7a, 0xdb,
1317			0x26, 0x7d, 0x1d, 0xb8, 0xe1, 0xde, 0x9d, 0x7a, 0x7d, 0x17, 0x7e, 0x1c,
1318			0x37, 0x04, 0x8d, 0x2d, 0x7c, 0x5e, 0x18, 0x38, 0x1e, 0xaf, 0xc7, 0x1b,
1319			0x33, 0x48, 0x31, 0x00, 0x59, 0xf6, 0xf2, 0xca, 0x0f, 0x27, 0x1b, 0x63,
1320			0x12, 0x7e, 0x02, 0x1d, 0x49, 0xc0, 0x5d, 0x79, 0x87, 0xef, 0x5e, 0x7a,
1321			0x2f, 0x1f, 0x66, 0x55, 0xd8, 0x09, 0xd9, 0x61, 0x38, 0x68, 0xb0, 0x07,
1322			0xa3, 0xfc, 0xcc, 0x85, 0x10, 0x7f, 0x4c, 0x65, 0x65, 0xb3, 0xfa, 0xfa,
1323			0xa5, 0x53, 0x6f, 0xdb, 0x74, 0x4c, 0x56, 0x46, 0x03, 0xe2, 0xd5, 0x7a,
1324			0x29, 0x1c, 0xc6, 0x02, 0xbc, 0x59, 0xf2, 0x04, 0x75, 0x63, 0xc0, 0x84,
1325			0x2f, 0x60, 0x1c, 0x67, 0x76, 0xfd, 0x63, 0x86, 0xf3, 0xfa, 0xbf, 0xdc,
1326			0xd2, 0x2d, 0x90, 0x91, 0xbd, 0x33, 0xa9, 0xe5, 0x66, 0x0c, 0xda, 0x42,
1327			0x27, 0xca, 0xf4, 0x66, 0xc2, 0xec, 0x92, 0x14, 0x57, 0x06, 0x63, 0xd0,
1328			0x4d, 0x15, 0x06, 0xeb, 0x69, 0x58, 0x4f, 0x77, 0xc5, 0x8b, 0xc7, 0xf0,
1329			0x8e, 0xed, 0x64, 0xa0, 0xb3, 0x3c, 0x66, 0x71, 0xc6, 0x2d, 0xda, 0x0a,
1330			0x0d, 0xfe, 0x70, 0x27, 0x64, 0xf8, 0x27, 0xfa, 0xf6, 0x5f, 0x30, 0xa5,
1331			0x0d, 0x6c, 0xda, 0xf2, 0x62, 0x5e, 0x78, 0x47, 0xd3, 0x66, 0x00, 0x1c,
1332			0xfd, 0x56, 0x1f, 0x5d, 0x3f, 0x6f, 0xf4, 0x4c, 0xd8, 0xfd, 0x0e, 0x27,
1333			0xc9, 0x5c, 0x2b, 0xbc, 0xc0, 0xa4, 0xe7, 0x23, 0x29, 0x02, 0x9f, 0x31,
1334			0xd6, 0xe9, 0xd7, 0x96, 0xf4, 0xe0, 0x5e, 0x0b, 0x0e, 0x13, 0xee, 0x3c,
1335			0x09, 0xed, 0xf2, 0x3d, 0x76, 0x91, 0xc3, 0xa4, 0x97, 0xae, 0xd4, 0x87,
1336			0xd0, 0x5d, 0xf6, 0x18, 0x47, 0x1f, 0x1d, 0x67, 0xf2, 0xcf, 0x63, 0xa0,
1337			0x91, 0x27, 0xf8, 0x93, 0x45, 0x75, 0x23, 0x3f, 0xd1, 0xf1, 0xad, 0x23,
1338			0xdd, 0x64, 0x93, 0x96, 0x41, 0x70, 0x7f, 0xf7, 0xf5, 0xa9, 0x89, 0xa2,
1339			0x34, 0xb0, 0x8d, 0x1b, 0xae, 0x19, 0x15, 0x49, 0x58, 0x23, 0x6d, 0x87,
1340			0x15, 0x4f, 0x81, 0x76, 0xfb, 0x23, 0xb5, 0xea, 0xcf, 0xac, 0x54, 0x8d,
1341			0x4e, 0x42, 0x2f, 0xeb, 0x0f, 0x63, 0xdb, 0x68, 0x37, 0xa8, 0xcf, 0x8b,
1342			0xab, 0xf5, 0xa4, 0x6e, 0x96, 0x2a, 0xb2, 0xd6, 0xbe, 0x9e, 0xbd, 0x0d,
1343			0xb4, 0x42, 0xa9, 0xcf, 0x01, 0x83, 0x8a, 0x17, 0x47, 0x76, 0xc4, 0xc6,
1344			0x83, 0x04, 0x95, 0x0b, 0xfc, 0x11, 0xc9, 0x62, 0xb8, 0x0c, 0x76, 0x84,
1345			0xd9, 0xb9, 0x37, 0xfa, 0xfc, 0x7c, 0xc2, 0x6d, 0x58, 0x3e, 0xb3, 0x04,
1346			0xbb, 0x8c, 0x8f, 0x48, 0xbc, 0x91, 0x27, 0xcc, 0xf9, 0xb7, 0x22, 0x19,
1347			0x83, 0x2e, 0x09, 0xb5, 0x72, 0xd9, 0x54, 0x1c, 0x4d, 0xa1, 0xea, 0x0b,
1348			0xf1, 0xc6, 0x08, 0x72, 0x46, 0x87, 0x7a, 0x6e, 0x80, 0x56, 0x0a, 0x8a,
1349			0xc0, 0xdd, 0x11, 0x6b, 0xd6, 0xdd, 0x47, 0xdf, 0x10, 0xd9, 0xd8, 0xea,
1350			0x7c, 0xb0, 0x8f, 0x03, 0x00, 0x2e, 0xc1, 0x8f, 0x44, 0xa8, 0xd3, 0x30,
1351			0x06, 0x89, 0xa2, 0xf9, 0x34, 0xad, 0xdc, 0x03, 0x85, 0xed, 0x51, 0xa7,
1352			0x82, 0x9c, 0xe7, 0x5d, 0x52, 0x93, 0x0c, 0x32, 0x9a, 0x5b, 0xe1, 0xaa,
1353			0xca, 0xb8, 0x02, 0x6d, 0x3a, 0xd4, 0xb1, 0x3a, 0xf0, 0x5f, 0xbe, 0xb5,
1354			0x0d, 0x10, 0x6b, 0x38, 0x32, 0xac, 0x76, 0x80, 0xbd, 0xca, 0x94, 0x71,
1355			0x7a, 0xf2, 0xc9, 0x35, 0x2a, 0xde, 0x9f, 0x42, 0x49, 0x18, 0x01, 0xab,
1356			0xbc, 0xef, 0x7c, 0x64, 0x3f, 0x58, 0x3d, 0x92, 0x59, 0xdb, 0x13, 0xdb,
1357			0x58, 0x6e, 0x0a, 0xe0, 0xb7, 0x91, 0x4a, 0x08, 0x20, 0xd6, 0x2e, 0x3c,
1358			0x45, 0xc9, 0x8b, 0x17, 0x79, 0xe7, 0xc7, 0x90, 0x99, 0x3a, 0x18, 0x25,
1359			};
1360
1361			void x25519_ge_scalarmult_base(ge_p3 *h, const uint8_t a[32]) {
1362			x25519_ge_scalarmult_small_precomp(h, a, k25519SmallPrecomp);
1363			}
1364
1365			#else
1366
1367			/* k25519Precomp[i][j] = (j+1)256^iB */
1368			static const ge_precomp k25519Precomp[32][8] = {
1369			{
1370			{
1371			{25967493, -14356035, 29566456, 3660896, -12694345, 4014787,
1372			27544626, -11754271, -6079156, 2047605},
1373			{-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692,
1374			5043384, 19500929, -15469378},
1375			{-8738181, 4489570, 9688441, -14785194, 10184609, -12363380,
1376			29287919, 11864899, -24514362, -4438546},
1377			},
1378			{
1379			{-12815894, -12976347, -21581243, 11784320, -25355658, -2750717,
1380			-11717903, -3814571, -358445, -10211303},
1381			{-21703237, 6903825, 27185491, 6451973, -29577724, -9554005,
1382			-15616551, 11189268, -26829678, -5319081},
1383			{26966642, 11152617, 32442495, 15396054, 14353839, -12752335,
1384			-3128826, -9541118, -15472047, -4166697},
1385			},
1386			{
1387			{15636291, -9688557, 24204773, -7912398, 616977, -16685262,
1388			27787600, -14772189, 28944400, -1550024},
1389			{16568933, 4717097, -11556148, -1102322, 15682896, -11807043,
1390			16354577, -11775962, 7689662, 11199574},
1391			{30464156, -5976125, -11779434, -15670865, 23220365, 15915852,
1392			7512774, 10017326, -17749093, -9920357},
1393			},
1394			{
1395			{-17036878, 13921892, 10945806, -6033431, 27105052, -16084379,
1396			-28926210, 15006023, 3284568, -6276540},
1397			{23599295, -8306047, -11193664, -7687416, 13236774, 10506355,
1398			7464579, 9656445, 13059162, 10374397},
1399			{7798556, 16710257, 3033922, 2874086, 28997861, 2835604, 32406664,
1400			-3839045, -641708, -101325},
1401			},
1402			{
1403			{10861363, 11473154, 27284546, 1981175, -30064349, 12577861,
1404			32867885, 14515107, -15438304, 10819380},
1405			{4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668,
1406			12483688, -12668491, 5581306},
1407			{19563160, 16186464, -29386857, 4097519, 10237984, -4348115,
1408			28542350, 13850243, -23678021, -15815942},
1409			},
1410			{
1411			{-15371964, -12862754, 32573250, 4720197, -26436522, 5875511,
1412			-19188627, -15224819, -9818940, -12085777},
1413			{-8549212, 109983, 15149363, 2178705, 22900618, 4543417, 3044240,
1414			-15689887, 1762328, 14866737},
1415			{-18199695, -15951423, -10473290, 1707278, -17185920, 3916101,
1416			-28236412, 3959421, 27914454, 4383652},
1417			},
1418			{
1419			{5153746, 9909285, 1723747, -2777874, 30523605, 5516873, 19480852,
1420			5230134, -23952439, -15175766},
1421			{-30269007, -3463509, 7665486, 10083793, 28475525, 1649722,
1422			20654025, 16520125, 30598449, 7715701},
1423			{28881845, 14381568, 9657904, 3680757, -20181635, 7843316,
1424			-31400660, 1370708, 29794553, -1409300},
1425			},
1426			{
1427			{14499471, -2729599, -33191113, -4254652, 28494862, 14271267,
1428			30290735, 10876454, -33154098, 2381726},
1429			{-7195431, -2655363, -14730155, 462251, -27724326, 3941372,
1430			-6236617, 3696005, -32300832, 15351955},
1431			{27431194, 8222322, 16448760, -3907995, -18707002, 11938355,
1432			-32961401, -2970515, 29551813, 10109425},
1433			},
1434			},
1435			{
1436			{
1437			{-13657040, -13155431, -31283750, 11777098, 21447386, 6519384,
1438			-2378284, -1627556, 10092783, -4764171},
1439			{27939166, 14210322, 4677035, 16277044, -22964462, -12398139,
1440			-32508754, 12005538, -17810127, 12803510},
1441			{17228999, -15661624, -1233527, 300140, -1224870, -11714777,
1442			30364213, -9038194, 18016357, 4397660},
1443			},
1444			{
1445			{-10958843, -7690207, 4776341, -14954238, 27850028, -15602212,
1446			-26619106, 14544525, -17477504, 982639},
1447			{29253598, 15796703, -2863982, -9908884, 10057023, 3163536, 7332899,
1448			-4120128, -21047696, 9934963},
1449			{5793303, 16271923, -24131614, -10116404, 29188560, 1206517,
1450			-14747930, 4559895, -30123922, -10897950},
1451			},
1452			{
1453			{-27643952, -11493006, 16282657, -11036493, 28414021, -15012264,
1454			24191034, 4541697, -13338309, 5500568},
1455			{12650548, -1497113, 9052871, 11355358, -17680037, -8400164,
1456			-17430592, 12264343, 10874051, 13524335},
1457			{25556948, -3045990, 714651, 2510400, 23394682, -10415330, 33119038,
1458			5080568, -22528059, 5376628},
1459			},
1460			{
1461			{-26088264, -4011052, -17013699, -3537628, -6726793, 1920897,
1462			-22321305, -9447443, 4535768, 1569007},
1463			{-2255422, 14606630, -21692440, -8039818, 28430649, 8775819,
1464			-30494562, 3044290, 31848280, 12543772},
1465			{-22028579, 2943893, -31857513, 6777306, 13784462, -4292203,
1466			-27377195, -2062731, 7718482, 14474653},
1467			},
1468			{
1469			{2385315, 2454213, -22631320, 46603, -4437935, -15680415, 656965,
1470			-7236665, 24316168, -5253567},
1471			{13741529, 10911568, -33233417, -8603737, -20177830, -1033297,
1472			33040651, -13424532, -20729456, 8321686},
1473			{21060490, -2212744, 15712757, -4336099, 1639040, 10656336,
1474			23845965, -11874838, -9984458, 608372},
1475			},
1476			{
1477			{-13672732, -15087586, -10889693, -7557059, -6036909, 11305547,
1478			1123968, -6780577, 27229399, 23887},
1479			{-23244140, -294205, -11744728, 14712571, -29465699, -2029617,
1480			12797024, -6440308, -1633405, 16678954},
1481			{-29500620, 4770662, -16054387, 14001338, 7830047, 9564805,
1482			-1508144, -4795045, -17169265, 4904953},
1483			},
1484			{
1485			{24059557, 14617003, 19037157, -15039908, 19766093, -14906429,
1486			5169211, 16191880, 2128236, -4326833},
1487			{-16981152, 4124966, -8540610, -10653797, 30336522, -14105247,
1488			-29806336, 916033, -6882542, -2986532},
1489			{-22630907, 12419372, -7134229, -7473371, -16478904, 16739175,
1490			285431, 2763829, 15736322, 4143876},
1491			},
1492			{
1493			{2379352, 11839345, -4110402, -5988665, 11274298, 794957, 212801,
1494			-14594663, 23527084, -16458268},
1495			{33431127, -11130478, -17838966, -15626900, 8909499, 8376530,
1496			-32625340, 4087881, -15188911, -14416214},
1497			{1767683, 7197987, -13205226, -2022635, -13091350, 448826, 5799055,
1498			4357868, -4774191, -16323038},
1499			},
1500			},
1501			{
1502			{
1503			{6721966, 13833823, -23523388, -1551314, 26354293, -11863321,
1504			23365147, -3949732, 7390890, 2759800},
1505			{4409041, 2052381, 23373853, 10530217, 7676779, -12885954, 21302353,
1506			-4264057, 1244380, -12919645},
1507			{-4421239, 7169619, 4982368, -2957590, 30256825, -2777540, 14086413,
1508			9208236, 15886429, 16489664},
1509			},
1510			{
1511			{1996075, 10375649, 14346367, 13311202, -6874135, -16438411,
1512			-13693198, 398369, -30606455, -712933},
1513			{-25307465, 9795880, -2777414, 14878809, -33531835, 14780363,
1514			13348553, 12076947, -30836462, 5113182},
1515			{-17770784, 11797796, 31950843, 13929123, -25888302, 12288344,
1516			-30341101, -7336386, 13847711, 5387222},
1517			},
1518			{
1519			{-18582163, -3416217, 17824843, -2340966, 22744343, -10442611,
1520			8763061, 3617786, -19600662, 10370991},
1521			{20246567, -14369378, 22358229, -543712, 18507283, -10413996,
1522			14554437, -8746092, 32232924, 16763880},
1523			{9648505, 10094563, 26416693, 14745928, -30374318, -6472621,
1524			11094161, 15689506, 3140038, -16510092},
1525			},
1526			{
1527			{-16160072, 5472695, 31895588, 4744994, 8823515, 10365685,
1528			-27224800, 9448613, -28774454, 366295},
1529			{19153450, 11523972, -11096490, -6503142, -24647631, 5420647,
1530			28344573, 8041113, 719605, 11671788},
1531			{8678025, 2694440, -6808014, 2517372, 4964326, 11152271, -15432916,
1532			-15266516, 27000813, -10195553},
1533			},
1534			{
1535			{-15157904, 7134312, 8639287, -2814877, -7235688, 10421742, 564065,
1536			5336097, 6750977, -14521026},
1537			{11836410, -3979488, 26297894, 16080799, 23455045, 15735944,
1538			1695823, -8819122, 8169720, 16220347},
1539			{-18115838, 8653647, 17578566, -6092619, -8025777, -16012763,
1540			-11144307, -2627664, -5990708, -14166033},
1541			},
1542			{
1543			{-23308498, -10968312, 15213228, -10081214, -30853605, -11050004,
1544			27884329, 2847284, 2655861, 1738395},
1545			{-27537433, -14253021, -25336301, -8002780, -9370762, 8129821,
1546			21651608, -3239336, -19087449, -11005278},
1547			{1533110, 3437855, 23735889, 459276, 29970501, 11335377, 26030092,
1548			5821408, 10478196, 8544890},
1549			},
1550			{
1551			{32173121, -16129311, 24896207, 3921497, 22579056, -3410854,
1552			19270449, 12217473, 17789017, -3395995},
1553			{-30552961, -2228401, -15578829, -10147201, 13243889, 517024,
1554			15479401, -3853233, 30460520, 1052596},
1555			{-11614875, 13323618, 32618793, 8175907, -15230173, 12596687,
1556			27491595, -4612359, 3179268, -9478891},
1557			},
1558			{
1559			{31947069, -14366651, -4640583, -15339921, -15125977, -6039709,
1560			-14756777, -16411740, 19072640, -9511060},
1561			{11685058, 11822410, 3158003, -13952594, 33402194, -4165066,
1562			5977896, -5215017, 473099, 5040608},
1563			{-20290863, 8198642, -27410132, 11602123, 1290375, -2799760,
1564			28326862, 1721092, -19558642, -3131606},
1565			},
1566			},
1567			{
1568			{
1569			{7881532, 10687937, 7578723, 7738378, -18951012, -2553952, 21820786,
1570			8076149, -27868496, 11538389},
1571			{-19935666, 3899861, 18283497, -6801568, -15728660, -11249211,
1572			8754525, 7446702, -5676054, 5797016},
1573			{-11295600, -3793569, -15782110, -7964573, 12708869, -8456199,
1574			2014099, -9050574, -2369172, -5877341},
1575			},
1576			{
1577			{-22472376, -11568741, -27682020, 1146375, 18956691, 16640559,
1578			1192730, -3714199, 15123619, 10811505},
1579			{14352098, -3419715, -18942044, 10822655, 32750596, 4699007, -70363,
1580			15776356, -28886779, -11974553},
1581			{-28241164, -8072475, -4978962, -5315317, 29416931, 1847569,
1582			-20654173, -16484855, 4714547, -9600655},
1583			},
1584			{
1585			{15200332, 8368572, 19679101, 15970074, -31872674, 1959451,
1586			24611599, -4543832, -11745876, 12340220},
1587			{12876937, -10480056, 33134381, 6590940, -6307776, 14872440,
1588			9613953, 8241152, 15370987, 9608631},
1589			{-4143277, -12014408, 8446281, -391603, 4407738, 13629032, -7724868,
1590			15866074, -28210621, -8814099},
1591			},
1592			{
1593			{26660628, -15677655, 8393734, 358047, -7401291, 992988, -23904233,
1594			858697, 20571223, 8420556},
1595			{14620715, 13067227, -15447274, 8264467, 14106269, 15080814,
1596			33531827, 12516406, -21574435, -12476749},
1597			{236881, 10476226, 57258, -14677024, 6472998, 2466984, 17258519,
1598			7256740, 8791136, 15069930},
1599			},
1600			{
1601			{1276410, -9371918, 22949635, -16322807, -23493039, -5702186,
1602			14711875, 4874229, -30663140, -2331391},
1603			{5855666, 4990204, -13711848, 7294284, -7804282, 1924647, -1423175,
1604			-7912378, -33069337, 9234253},
1605			{20590503, -9018988, 31529744, -7352666, -2706834, 10650548,
1606			31559055, -11609587, 18979186, 13396066},
1607			},
1608			{
1609			{24474287, 4968103, 22267082, 4407354, 24063882, -8325180,
1610			-18816887, 13594782, 33514650, 7021958},
1611			{-11566906, -6565505, -21365085, 15928892, -26158305, 4315421,
1612			-25948728, -3916677, -21480480, 12868082},
1613			{-28635013, 13504661, 19988037, -2132761, 21078225, 6443208,
1614			-21446107, 2244500, -12455797, -8089383},
1615			},
1616			{
1617			{-30595528, 13793479, -5852820, 319136, -25723172, -6263899,
1618			33086546, 8957937, -15233648, 5540521},
1619			{-11630176, -11503902, -8119500, -7643073, 2620056, 1022908,
1620			-23710744, -1568984, -16128528, -14962807},
1621			{23152971, 775386, 27395463, 14006635, -9701118, 4649512, 1689819,
1622			892185, -11513277, -15205948},
1623			},
1624			{
1625			{9770129, 9586738, 26496094, 4324120, 1556511, -3550024, 27453819,
1626			4763127, -19179614, 5867134},
1627			{-32765025, 1927590, 31726409, -4753295, 23962434, -16019500,
1628			27846559, 5931263, -29749703, -16108455},
1629			{27461885, -2977536, 22380810, 1815854, -23033753, -3031938,
1630			7283490, -15148073, -19526700, 7734629},
1631			},
1632			},
1633			{
1634			{
1635			{-8010264, -9590817, -11120403, 6196038, 29344158, -13430885,
1636			7585295, -3176626, 18549497, 15302069},
1637			{-32658337, -6171222, -7672793, -11051681, 6258878, 13504381,
1638			10458790, -6418461, -8872242, 8424746},
1639			{24687205, 8613276, -30667046, -3233545, 1863892, -1830544,
1640			19206234, 7134917, -11284482, -828919},
1641			},
1642			{
1643			{11334899, -9218022, 8025293, 12707519, 17523892, -10476071,
1644			10243738, -14685461, -5066034, 16498837},
1645			{8911542, 6887158, -9584260, -6958590, 11145641, -9543680, 17303925,
1646			-14124238, 6536641, 10543906},
1647			{-28946384, 15479763, -17466835, 568876, -1497683, 11223454,
1648			-2669190, -16625574, -27235709, 8876771},
1649			},
1650			{
1651			{-25742899, -12566864, -15649966, -846607, -33026686, -796288,
1652			-33481822, 15824474, -604426, -9039817},
1653			{10330056, 70051, 7957388, -9002667, 9764902, 15609756, 27698697,
1654			-4890037, 1657394, 3084098},
1655			{10477963, -7470260, 12119566, -13250805, 29016247, -5365589,
1656			31280319, 14396151, -30233575, 15272409},
1657			},
1658			{
1659			{-12288309, 3169463, 28813183, 16658753, 25116432, -5630466,
1660			-25173957, -12636138, -25014757, 1950504},
1661			{-26180358, 9489187, 11053416, -14746161, -31053720, 5825630,
1662			-8384306, -8767532, 15341279, 8373727},
1663			{28685821, 7759505, -14378516, -12002860, -31971820, 4079242,
1664			298136, -10232602, -2878207, 15190420},
1665			},
1666			{
1667			{-32932876, 13806336, -14337485, -15794431, -24004620, 10940928,
1668			8669718, 2742393, -26033313, -6875003},
1669			{-1580388, -11729417, -25979658, -11445023, -17411874, -10912854,
1670			9291594, -16247779, -12154742, 6048605},
1671			{-30305315, 14843444, 1539301, 11864366, 20201677, 1900163,
1672			13934231, 5128323, 11213262, 9168384},
1673			},
1674			{
1675			{-26280513, 11007847, 19408960, -940758, -18592965, -4328580,
1676			-5088060, -11105150, 20470157, -16398701},
1677			{-23136053, 9282192, 14855179, -15390078, -7362815, -14408560,
1678			-22783952, 14461608, 14042978, 5230683},
1679			{29969567, -2741594, -16711867, -8552442, 9175486, -2468974,
1680			21556951, 3506042, -5933891, -12449708},
1681			},
1682			{
1683			{-3144746, 8744661, 19704003, 4581278, -20430686, 6830683,
1684			-21284170, 8971513, -28539189, 15326563},
1685			{-19464629, 10110288, -17262528, -3503892, -23500387, 1355669,
1686			-15523050, 15300988, -20514118, 9168260},
1687			{-5353335, 4488613, -23803248, 16314347, 7780487, -15638939,
1688			-28948358, 9601605, 33087103, -9011387},
1689			},
1690			{
1691			{-19443170, -15512900, -20797467, -12445323, -29824447, 10229461,
1692			-27444329, -15000531, -5996870, 15664672},
1693			{23294591, -16632613, -22650781, -8470978, 27844204, 11461195,
1694			13099750, -2460356, 18151676, 13417686},
1695			{-24722913, -4176517, -31150679, 5988919, -26858785, 6685065,
1696			1661597, -12551441, 15271676, -15452665},
1697			},
1698			},
1699			{
1700			{
1701			{11433042, -13228665, 8239631, -5279517, -1985436, -725718,
1702			-18698764, 2167544, -6921301, -13440182},
1703			{-31436171, 15575146, 30436815, 12192228, -22463353, 9395379,
1704			-9917708, -8638997, 12215110, 12028277},
1705			{14098400, 6555944, 23007258, 5757252, -15427832, -12950502,
1706			30123440, 4617780, -16900089, -655628},
1707			},
1708			{
1709			{-4026201, -15240835, 11893168, 13718664, -14809462, 1847385,
1710			-15819999, 10154009, 23973261, -12684474},
1711			{-26531820, -3695990, -1908898, 2534301, -31870557, -16550355,
1712			18341390, -11419951, 32013174, -10103539},
1713			{-25479301, 10876443, -11771086, -14625140, -12369567, 1838104,
1714			21911214, 6354752, 4425632, -837822},
1715			},
1716			{
1717			{-10433389, -14612966, 22229858, -3091047, -13191166, 776729,
1718			-17415375, -12020462, 4725005, 14044970},
1719			{19268650, -7304421, 1555349, 8692754, -21474059, -9910664, 6347390,
1720			-1411784, -19522291, -16109756},
1721			{-24864089, 12986008, -10898878, -5558584, -11312371, -148526,
1722			19541418, 8180106, 9282262, 10282508},
1723			},
1724			{
1725			{-26205082, 4428547, -8661196, -13194263, 4098402, -14165257,
1726			15522535, 8372215, 5542595, -10702683},
1727			{-10562541, 14895633, 26814552, -16673850, -17480754, -2489360,
1728			-2781891, 6993761, -18093885, 10114655},
1729			{-20107055, -929418, 31422704, 10427861, -7110749, 6150669,
1730			-29091755, -11529146, 25953725, -106158},
1731			},
1732			{
1733			{-4234397, -8039292, -9119125, 3046000, 2101609, -12607294,
1734			19390020, 6094296, -3315279, 12831125},
1735			{-15998678, 7578152, 5310217, 14408357, -33548620, -224739,
1736			31575954, 6326196, 7381791, -2421839},
1737			{-20902779, 3296811, 24736065, -16328389, 18374254, 7318640,
1738			6295303, 8082724, -15362489, 12339664},
1739			},
1740			{
1741			{27724736, 2291157, 6088201, -14184798, 1792727, 5857634, 13848414,
1742			15768922, 25091167, 14856294},
1743			{-18866652, 8331043, 24373479, 8541013, -701998, -9269457, 12927300,
1744			-12695493, -22182473, -9012899},
1745			{-11423429, -5421590, 11632845, 3405020, 30536730, -11674039,
1746			-27260765, 13866390, 30146206, 9142070},
1747			},
1748			{
1749			{3924129, -15307516, -13817122, -10054960, 12291820, -668366,
1750			-27702774, 9326384, -8237858, 4171294},
1751			{-15921940, 16037937, 6713787, 16606682, -21612135, 2790944,
1752			26396185, 3731949, 345228, -5462949},
1753			{-21327538, 13448259, 25284571, 1143661, 20614966, -8849387,
1754			2031539, -12391231, -16253183, -13582083},
1755			},
1756			{
1757			{31016211, -16722429, 26371392, -14451233, -5027349, 14854137,
1758			17477601, 3842657, 28012650, -16405420},
1759			{-5075835, 9368966, -8562079, -4600902, -15249953, 6970560,
1760			-9189873, 16292057, -8867157, 3507940},
1761			{29439664, 3537914, 23333589, 6997794, -17555561, -11018068,
1762			-15209202, -15051267, -9164929, 6580396},
1763			},
1764			},
1765			{
1766			{
1767			{-12185861, -7679788, 16438269, 10826160, -8696817, -6235611,
1768			17860444, -9273846, -2095802, 9304567},
1769			{20714564, -4336911, 29088195, 7406487, 11426967, -5095705,
1770			14792667, -14608617, 5289421, -477127},
1771			{-16665533, -10650790, -6160345, -13305760, 9192020, -1802462,
1772			17271490, 12349094, 26939669, -3752294},
1773			},
1774			{
1775			{-12889898, 9373458, 31595848, 16374215, 21471720, 13221525,
1776			-27283495, -12348559, -3698806, 117887},
1777			{22263325, -6560050, 3984570, -11174646, -15114008, -566785,
1778			28311253, 5358056, -23319780, 541964},
1779			{16259219, 3261970, 2309254, -15534474, -16885711, -4581916,
1780			24134070, -16705829, -13337066, -13552195},
1781			},
1782			{
1783			{9378160, -13140186, -22845982, -12745264, 28198281, -7244098,
1784			-2399684, -717351, 690426, 14876244},
1785			{24977353, -314384, -8223969, -13465086, 28432343, -1176353,
1786			-13068804, -12297348, -22380984, 6618999},
1787			{-1538174, 11685646, 12944378, 13682314, -24389511, -14413193,
1788			8044829, -13817328, 32239829, -5652762},
1789			},
1790			{
1791			{-18603066, 4762990, -926250, 8885304, -28412480, -3187315, 9781647,
1792			-10350059, 32779359, 5095274},
1793			{-33008130, -5214506, -32264887, -3685216, 9460461, -9327423,
1794			-24601656, 14506724, 21639561, -2630236},
1795			{-16400943, -13112215, 25239338, 15531969, 3987758, -4499318,
1796			-1289502, -6863535, 17874574, 558605},
1797			},
1798			{
1799			{-13600129, 10240081, 9171883, 16131053, -20869254, 9599700,
1800			33499487, 5080151, 2085892, 5119761},
1801			{-22205145, -2519528, -16381601, 414691, -25019550, 2170430,
1802			30634760, -8363614, -31999993, -5759884},
1803			{-6845704, 15791202, 8550074, -1312654, 29928809, -12092256,
1804			27534430, -7192145, -22351378, 12961482},
1805			},
1806			{
1807			{-24492060, -9570771, 10368194, 11582341, -23397293, -2245287,
1808			16533930, 8206996, -30194652, -5159638},
1809			{-11121496, -3382234, 2307366, 6362031, -135455, 8868177, -16835630,
1810			7031275, 7589640, 8945490},
1811			{-32152748, 8917967, 6661220, -11677616, -1192060, -15793393,
1812			7251489, -11182180, 24099109, -14456170},
1813			},
1814			{
1815			{5019558, -7907470, 4244127, -14714356, -26933272, 6453165,
1816			-19118182, -13289025, -6231896, -10280736},
1817			{10853594, 10721687, 26480089, 5861829, -22995819, 1972175,
1818			-1866647, -10557898, -3363451, -6441124},
1819			{-17002408, 5906790, 221599, -6563147, 7828208, -13248918, 24362661,
1820			-2008168, -13866408, 7421392},
1821			},
1822			{
1823			{8139927, -6546497, 32257646, -5890546, 30375719, 1886181,
1824			-21175108, 15441252, 28826358, -4123029},
1825			{6267086, 9695052, 7709135, -16603597, -32869068, -1886135,
1826			14795160, -7840124, 13746021, -1742048},
1827			{28584902, 7787108, -6732942, -15050729, 22846041, -7571236,
1828			-3181936, -363524, 4771362, -8419958},
1829			},
1830			},
1831			{
1832			{
1833			{24949256, 6376279, -27466481, -8174608, -18646154, -9930606,
1834			33543569, -12141695, 3569627, 11342593},
1835			{26514989, 4740088, 27912651, 3697550, 19331575, -11472339, 6809886,
1836			4608608, 7325975, -14801071},
1837			{-11618399, -14554430, -24321212, 7655128, -1369274, 5214312,
1838			-27400540, 10258390, -17646694, -8186692},
1839			},
1840			{
1841			{11431204, 15823007, 26570245, 14329124, 18029990, 4796082,
1842			-31446179, 15580664, 9280358, -3973687},
1843			{-160783, -10326257, -22855316, -4304997, -20861367, -13621002,
1844			-32810901, -11181622, -15545091, 4387441},
1845			{-20799378, 12194512, 3937617, -5805892, -27154820, 9340370,
1846			-24513992, 8548137, 20617071, -7482001},
1847			},
1848			{
1849			{-938825, -3930586, -8714311, 16124718, 24603125, -6225393,
1850			-13775352, -11875822, 24345683, 10325460},
1851			{-19855277, -1568885, -22202708, 8714034, 14007766, 6928528,
1852			16318175, -1010689, 4766743, 3552007},
1853			{-21751364, -16730916, 1351763, -803421, -4009670, 3950935, 3217514,
1854			14481909, 10988822, -3994762},
1855			},
1856			{
1857			{15564307, -14311570, 3101243, 5684148, 30446780, -8051356,
1858			12677127, -6505343, -8295852, 13296005},
1859			{-9442290, 6624296, -30298964, -11913677, -4670981, -2057379,
1860			31521204, 9614054, -30000824, 12074674},
1861			{4771191, -135239, 14290749, -13089852, 27992298, 14998318,
1862			-1413936, -1556716, 29832613, -16391035},
1863			},
1864			{
1865			{7064884, -7541174, -19161962, -5067537, -18891269, -2912736,
1866			25825242, 5293297, -27122660, 13101590},
1867			{-2298563, 2439670, -7466610, 1719965, -27267541, -16328445,
1868			32512469, -5317593, -30356070, -4190957},
1869			{-30006540, 10162316, -33180176, 3981723, -16482138, -13070044,
1870			14413974, 9515896, 19568978, 9628812},
1871			},
1872			{
1873			{33053803, 199357, 15894591, 1583059, 27380243, -4580435, -17838894,
1874			-6106839, -6291786, 3437740},
1875			{-18978877, 3884493, 19469877, 12726490, 15913552, 13614290,
1876			-22961733, 70104, 7463304, 4176122},
1877			{-27124001, 10659917, 11482427, -16070381, 12771467, -6635117,
1878			-32719404, -5322751, 24216882, 5944158},
1879			},
1880			{
1881			{8894125, 7450974, -2664149, -9765752, -28080517, -12389115,
1882			19345746, 14680796, 11632993, 5847885},
1883			{26942781, -2315317, 9129564, -4906607, 26024105, 11769399,
1884			-11518837, 6367194, -9727230, 4782140},
1885			{19916461, -4828410, -22910704, -11414391, 25606324, -5972441,
1886			33253853, 8220911, 6358847, -1873857},
1887			},
1888			{
1889			{801428, -2081702, 16569428, 11065167, 29875704, 96627, 7908388,
1890			-4480480, -13538503, 1387155},
1891			{19646058, 5720633, -11416706, 12814209, 11607948, 12749789,
1892			14147075, 15156355, -21866831, 11835260},
1893			{19299512, 1155910, 28703737, 14890794, 2925026, 7269399, 26121523,
1894			15467869, -26560550, 5052483},
1895			},
1896			},
1897			{
1898			{
1899			{-3017432, 10058206, 1980837, 3964243, 22160966, 12322533, -6431123,
1900			-12618185, 12228557, -7003677},
1901			{32944382, 14922211, -22844894, 5188528, 21913450, -8719943,
1902			4001465, 13238564, -6114803, 8653815},
1903			{22865569, -4652735, 27603668, -12545395, 14348958, 8234005,
1904			24808405, 5719875, 28483275, 2841751},
1905			},
1906			{
1907			{-16420968, -1113305, -327719, -12107856, 21886282, -15552774,
1908			-1887966, -315658, 19932058, -12739203},
1909			{-11656086, 10087521, -8864888, -5536143, -19278573, -3055912,
1910			3999228, 13239134, -4777469, -13910208},
1911			{1382174, -11694719, 17266790, 9194690, -13324356, 9720081,
1912			20403944, 11284705, -14013818, 3093230},
1913			},
1914			{
1915			{16650921, -11037932, -1064178, 1570629, -8329746, 7352753, -302424,
1916			16271225, -24049421, -6691850},
1917			{-21911077, -5927941, -4611316, -5560156, -31744103, -10785293,
1918			24123614, 15193618, -21652117, -16739389},
1919			{-9935934, -4289447, -25279823, 4372842, 2087473, 10399484,
1920			31870908, 14690798, 17361620, 11864968},
1921			},
1922			{
1923			{-11307610, 6210372, 13206574, 5806320, -29017692, -13967200,
1924			-12331205, -7486601, -25578460, -16240689},
1925			{14668462, -12270235, 26039039, 15305210, 25515617, 4542480,
1926			10453892, 6577524, 9145645, -6443880},
1927			{5974874, 3053895, -9433049, -10385191, -31865124, 3225009,
1928			-7972642, 3936128, -5652273, -3050304},
1929			},
1930			{
1931			{30625386, -4729400, -25555961, -12792866, -20484575, 7695099,
1932			17097188, -16303496, -27999779, 1803632},
1933			{-3553091, 9865099, -5228566, 4272701, -5673832, -16689700,
1934			14911344, 12196514, -21405489, 7047412},
1935			{20093277, 9920966, -11138194, -5343857, 13161587, 12044805,
1936			-32856851, 4124601, -32343828, -10257566},
1937			},
1938			{
1939			{-20788824, 14084654, -13531713, 7842147, 19119038, -13822605,
1940			4752377, -8714640, -21679658, 2288038},
1941			{-26819236, -3283715, 29965059, 3039786, -14473765, 2540457,
1942			29457502, 14625692, -24819617, 12570232},
1943			{-1063558, -11551823, 16920318, 12494842, 1278292, -5869109,
1944			-21159943, -3498680, -11974704, 4724943},
1945			},
1946			{
1947			{17960970, -11775534, -4140968, -9702530, -8876562, -1410617,
1948			-12907383, -8659932, -29576300, 1903856},
1949			{23134274, -14279132, -10681997, -1611936, 20684485, 15770816,
1950			-12989750, 3190296, 26955097, 14109738},
1951			{15308788, 5320727, -30113809, -14318877, 22902008, 7767164,
1952			29425325, -11277562, 31960942, 11934971},
1953			},
1954			{
1955			{-27395711, 8435796, 4109644, 12222639, -24627868, 14818669,
1956			20638173, 4875028, 10491392, 1379718},
1957			{-13159415, 9197841, 3875503, -8936108, -1383712, -5879801,
1958			33518459, 16176658, 21432314, 12180697},
1959			{-11787308, 11500838, 13787581, -13832590, -22430679, 10140205,
1960			1465425, 12689540, -10301319, -13872883},
1961			},
1962			},
1963			{
1964			{
1965			{5414091, -15386041, -21007664, 9643570, 12834970, 1186149,
1966			-2622916, -1342231, 26128231, 6032912},
1967			{-26337395, -13766162, 32496025, -13653919, 17847801, -12669156,
1968			3604025, 8316894, -25875034, -10437358},
1969			{3296484, 6223048, 24680646, -12246460, -23052020, 5903205,
1970			-8862297, -4639164, 12376617, 3188849},
1971			},
1972			{
1973			{29190488, -14659046, 27549113, -1183516, 3520066, -10697301,
1974			32049515, -7309113, -16109234, -9852307},
1975			{-14744486, -9309156, 735818, -598978, -20407687, -5057904,
1976			25246078, -15795669, 18640741, -960977},
1977			{-6928835, -16430795, 10361374, 5642961, 4910474, 12345252,
1978			-31638386, -494430, 10530747, 1053335},
1979			},
1980			{
1981			{-29265967, -14186805, -13538216, -12117373, -19457059, -10655384,
1982			-31462369, -2948985, 24018831, 15026644},
1983			{-22592535, -3145277, -2289276, 5953843, -13440189, 9425631,
1984			25310643, 13003497, -2314791, -15145616},
1985			{-27419985, -603321, -8043984, -1669117, -26092265, 13987819,
1986			-27297622, 187899, -23166419, -2531735},
1987			},
1988			{
1989			{-21744398, -13810475, 1844840, 5021428, -10434399, -15911473,
1990			9716667, 16266922, -5070217, 726099},
1991			{29370922, -6053998, 7334071, -15342259, 9385287, 2247707,
1992			-13661962, -4839461, 30007388, -15823341},
1993			{-936379, 16086691, 23751945, -543318, -1167538, -5189036, 9137109,
1994			730663, 9835848, 4555336},
1995			},
1996			{
1997			{-23376435, 1410446, -22253753, -12899614, 30867635, 15826977,
1998			17693930, 544696, -11985298, 12422646},
1999			{31117226, -12215734, -13502838, 6561947, -9876867, -12757670,
2000			-5118685, -4096706, 29120153, 13924425},
2001			{-17400879, -14233209, 19675799, -2734756, -11006962, -5858820,
2002			-9383939, -11317700, 7240931, -237388},
2003			},
2004			{
2005			{-31361739, -11346780, -15007447, -5856218, -22453340, -12152771,
2006			1222336, 4389483, 3293637, -15551743},
2007			{-16684801, -14444245, 11038544, 11054958, -13801175, -3338533,
2008			-24319580, 7733547, 12796905, -6335822},
2009			{-8759414, -10817836, -25418864, 10783769, -30615557, -9746811,
2010			-28253339, 3647836, 3222231, -11160462},
2011			},
2012			{
2013			{18606113, 1693100, -25448386, -15170272, 4112353, 10045021,
2014			23603893, -2048234, -7550776, 2484985},
2015			{9255317, -3131197, -12156162, -1004256, 13098013, -9214866,
2016			16377220, -2102812, -19802075, -3034702},
2017			{-22729289, 7496160, -5742199, 11329249, 19991973, -3347502,
2018			-31718148, 9936966, -30097688, -10618797},
2019			},
2020			{
2021			{21878590, -5001297, 4338336, 13643897, -3036865, 13160960,
2022			19708896, 5415497, -7360503, -4109293},
2023			{27736861, 10103576, 12500508, 8502413, -3413016, -9633558,
2024			10436918, -1550276, -23659143, -8132100},
2025			{19492550, -12104365, -29681976, -852630, -3208171, 12403437,
2026			30066266, 8367329, 13243957, 8709688},
2027			},
2028			},
2029			{
2030			{
2031			{12015105, 2801261, 28198131, 10151021, 24818120, -4743133,
2032			-11194191, -5645734, 5150968, 7274186},
2033			{2831366, -12492146, 1478975, 6122054, 23825128, -12733586,
2034			31097299, 6083058, 31021603, -9793610},
2035			{-2529932, -2229646, 445613, 10720828, -13849527, -11505937,
2036			-23507731, 16354465, 15067285, -14147707},
2037			},
2038			{
2039			{7840942, 14037873, -33364863, 15934016, -728213, -3642706,
2040			21403988, 1057586, -19379462, -12403220},
2041			{915865, -16469274, 15608285, -8789130, -24357026, 6060030,
2042			-17371319, 8410997, -7220461, 16527025},
2043			{32922597, -556987, 20336074, -16184568, 10903705, -5384487,
2044			16957574, 52992, 23834301, 6588044},
2045			},
2046			{
2047			{32752030, 11232950, 3381995, -8714866, 22652988, -10744103,
2048			17159699, 16689107, -20314580, -1305992},
2049			{-4689649, 9166776, -25710296, -10847306, 11576752, 12733943,
2050			7924251, -2752281, 1976123, -7249027},
2051			{21251222, 16309901, -2983015, -6783122, 30810597, 12967303, 156041,
2052			-3371252, 12331345, -8237197},
2053			},
2054			{
2055			{8651614, -4477032, -16085636, -4996994, 13002507, 2950805,
2056			29054427, -5106970, 10008136, -4667901},
2057			{31486080, 15114593, -14261250, 12951354, 14369431, -7387845,
2058			16347321, -13662089, 8684155, -10532952},
2059			{19443825, 11385320, 24468943, -9659068, -23919258, 2187569,
2060			-26263207, -6086921, 31316348, 14219878},
2061			},
2062			{
2063			{-28594490, 1193785, 32245219, 11392485, 31092169, 15722801,
2064			27146014, 6992409, 29126555, 9207390},
2065			{32382935, 1110093, 18477781, 11028262, -27411763, -7548111,
2066			-4980517, 10843782, -7957600, -14435730},
2067			{2814918, 7836403, 27519878, -7868156, -20894015, -11553689,
2068			-21494559, 8550130, 28346258, 1994730},
2069			},
2070			{
2071			{-19578299, 8085545, -14000519, -3948622, 2785838, -16231307,
2072			-19516951, 7174894, 22628102, 8115180},
2073			{-30405132, 955511, -11133838, -15078069, -32447087, -13278079,
2074			-25651578, 3317160, -9943017, 930272},
2075			{-15303681, -6833769, 28856490, 1357446, 23421993, 1057177,
2076			24091212, -1388970, -22765376, -10650715},
2077			},
2078			{
2079			{-22751231, -5303997, -12907607, -12768866, -15811511, -7797053,
2080			-14839018, -16554220, -1867018, 8398970},
2081			{-31969310, 2106403, -4736360, 1362501, 12813763, 16200670,
2082			22981545, -6291273, 18009408, -15772772},
2083			{-17220923, -9545221, -27784654, 14166835, 29815394, 7444469,
2084			29551787, -3727419, 19288549, 1325865},
2085			},
2086			{
2087			{15100157, -15835752, -23923978, -1005098, -26450192, 15509408,
2088			12376730, -3479146, 33166107, -8042750},
2089			{20909231, 13023121, -9209752, 16251778, -5778415, -8094914,
2090			12412151, 10018715, 2213263, -13878373},
2091			{32529814, -11074689, 30361439, -16689753, -9135940, 1513226,
2092			22922121, 6382134, -5766928, 8371348},
2093			},
2094			},
2095			{
2096			{
2097			{9923462, 11271500, 12616794, 3544722, -29998368, -1721626,
2098			12891687, -8193132, -26442943, 10486144},
2099			{-22597207, -7012665, 8587003, -8257861, 4084309, -12970062, 361726,
2100			2610596, -23921530, -11455195},
2101			{5408411, -1136691, -4969122, 10561668, 24145918, 14240566,
2102			31319731, -4235541, 19985175, -3436086},
2103			},
2104			{
2105			{-13994457, 16616821, 14549246, 3341099, 32155958, 13648976,
2106			-17577068, 8849297, 65030, 8370684},
2107			{-8320926, -12049626, 31204563, 5839400, -20627288, -1057277,
2108			-19442942, 6922164, 12743482, -9800518},
2109			{-2361371, 12678785, 28815050, 4759974, -23893047, 4884717,
2110			23783145, 11038569, 18800704, 255233},
2111			},
2112			{
2113			{-5269658, -1773886, 13957886, 7990715, 23132995, 728773, 13393847,
2114			9066957, 19258688, -14753793},
2115			{-2936654, -10827535, -10432089, 14516793, -3640786, 4372541,
2116			-31934921, 2209390, -1524053, 2055794},
2117			{580882, 16705327, 5468415, -2683018, -30926419, -14696000,
2118			-7203346, -8994389, -30021019, 7394435},
2119			},
2120			{
2121			{23838809, 1822728, -15738443, 15242727, 8318092, -3733104,
2122			-21672180, -3492205, -4821741, 14799921},
2123			{13345610, 9759151, 3371034, -16137791, 16353039, 8577942, 31129804,
2124			13496856, -9056018, 7402518},
2125			{2286874, -4435931, -20042458, -2008336, -13696227, 5038122,
2126			11006906, -15760352, 8205061, 1607563},
2127			},
2128			{
2129			{14414086, -8002132, 3331830, -3208217, 22249151, -5594188,
2130			18364661, -2906958, 30019587, -9029278},
2131			{-27688051, 1585953, -10775053, 931069, -29120221, -11002319,
2132			-14410829, 12029093, 9944378, 8024},
2133			{4368715, -3709630, 29874200, -15022983, -20230386, -11410704,
2134			-16114594, -999085, -8142388, 5640030},
2135			},
2136			{
2137			{10299610, 13746483, 11661824, 16234854, 7630238, 5998374, 9809887,
2138			-16694564, 15219798, -14327783},
2139			{27425505, -5719081, 3055006, 10660664, 23458024, 595578, -15398605,
2140			-1173195, -18342183, 9742717},
2141			{6744077, 2427284, 26042789, 2720740, -847906, 1118974, 32324614,
2142			7406442, 12420155, 1994844},
2143			},
2144			{
2145			{14012521, -5024720, -18384453, -9578469, -26485342, -3936439,
2146			-13033478, -10909803, 24319929, -6446333},
2147			{16412690, -4507367, 10772641, 15929391, -17068788, -4658621,
2148			10555945, -10484049, -30102368, -4739048},
2149			{22397382, -7767684, -9293161, -12792868, 17166287, -9755136,
2150			-27333065, 6199366, 21880021, -12250760},
2151			},
2152			{
2153			{-4283307, 5368523, -31117018, 8163389, -30323063, 3209128,
2154			16557151, 8890729, 8840445, 4957760},
2155			{-15447727, 709327, -6919446, -10870178, -29777922, 6522332,
2156			-21720181, 12130072, -14796503, 5005757},
2157			{-2114751, -14308128, 23019042, 15765735, -25269683, 6002752,
2158			10183197, -13239326, -16395286, -2176112},
2159			},
2160			},
2161			{
2162			{
2163			{-19025756, 1632005, 13466291, -7995100, -23640451, 16573537,
2164			-32013908, -3057104, 22208662, 2000468},
2165			{3065073, -1412761, -25598674, -361432, -17683065, -5703415,
2166			-8164212, 11248527, -3691214, -7414184},
2167			{10379208, -6045554, 8877319, 1473647, -29291284, -12507580,
2168			16690915, 2553332, -3132688, 16400289},
2169			},
2170			{
2171			{15716668, 1254266, -18472690, 7446274, -8448918, 6344164,
2172			-22097271, -7285580, 26894937, 9132066},
2173			{24158887, 12938817, 11085297, -8177598, -28063478, -4457083,
2174			-30576463, 64452, -6817084, -2692882},
2175			{13488534, 7794716, 22236231, 5989356, 25426474, -12578208, 2350710,
2176			-3418511, -4688006, 2364226},
2177			},
2178			{
2179			{16335052, 9132434, 25640582, 6678888, 1725628, 8517937, -11807024,
2180			-11697457, 15445875, -7798101},
2181			{29004207, -7867081, 28661402, -640412, -12794003, -7943086,
2182			31863255, -4135540, -278050, -15759279},
2183			{-6122061, -14866665, -28614905, 14569919, -10857999, -3591829,
2184			10343412, -6976290, -29828287, -10815811},
2185			},
2186			{
2187			{27081650, 3463984, 14099042, -4517604, 1616303, -6205604, 29542636,
2188			15372179, 17293797, 960709},
2189			{20263915, 11434237, -5765435, 11236810, 13505955, -10857102,
2190			-16111345, 6493122, -19384511, 7639714},
2191			{-2830798, -14839232, 25403038, -8215196, -8317012, -16173699,
2192			18006287, -16043750, 29994677, -15808121},
2193			},
2194			{
2195			{9769828, 5202651, -24157398, -13631392, -28051003, -11561624,
2196			-24613141, -13860782, -31184575, 709464},
2197			{12286395, 13076066, -21775189, -1176622, -25003198, 4057652,
2198			-32018128, -8890874, 16102007, 13205847},
2199			{13733362, 5599946, 10557076, 3195751, -5557991, 8536970, -25540170,
2200			8525972, 10151379, 10394400},
2201			},
2202			{
2203			{4024660, -16137551, 22436262, 12276534, -9099015, -2686099,
2204			19698229, 11743039, -33302334, 8934414},
2205			{-15879800, -4525240, -8580747, -2934061, 14634845, -698278,
2206			-9449077, 3137094, -11536886, 11721158},
2207			{17555939, -5013938, 8268606, 2331751, -22738815, 9761013, 9319229,
2208			8835153, -9205489, -1280045},
2209			},
2210			{
2211			{-461409, -7830014, 20614118, 16688288, -7514766, -4807119,
2212			22300304, 505429, 6108462, -6183415},
2213			{-5070281, 12367917, -30663534, 3234473, 32617080, -8422642,
2214			29880583, -13483331, -26898490, -7867459},
2215			{-31975283, 5726539, 26934134, 10237677, -3173717, -605053,
2216			24199304, 3795095, 7592688, -14992079},
2217			},
2218			{
2219			{21594432, -14964228, 17466408, -4077222, 32537084, 2739898,
2220			6407723, 12018833, -28256052, 4298412},
2221			{-20650503, -11961496, -27236275, 570498, 3767144, -1717540,
2222			13891942, -1569194, 13717174, 10805743},
2223			{-14676630, -15644296, 15287174, 11927123, 24177847, -8175568,
2224			-796431, 14860609, -26938930, -5863836},
2225			},
2226			},
2227			{
2228			{
2229			{12962541, 5311799, -10060768, 11658280, 18855286, -7954201,
2230			13286263, -12808704, -4381056, 9882022},
2231			{18512079, 11319350, -20123124, 15090309, 18818594, 5271736,
2232			-22727904, 3666879, -23967430, -3299429},
2233			{-6789020, -3146043, 16192429, 13241070, 15898607, -14206114,
2234			-10084880, -6661110, -2403099, 5276065},
2235			},
2236			{
2237			{30169808, -5317648, 26306206, -11750859, 27814964, 7069267,
2238			7152851, 3684982, 1449224, 13082861},
2239			{10342826, 3098505, 2119311, 193222, 25702612, 12233820, 23697382,
2240			15056736, -21016438, -8202000},
2241			{-33150110, 3261608, 22745853, 7948688, 19370557, -15177665,
2242			-26171976, 6482814, -10300080, -11060101},
2243			},
2244			{
2245			{32869458, -5408545, 25609743, 15678670, -10687769, -15471071,
2246			26112421, 2521008, -22664288, 6904815},
2247			{29506923, 4457497, 3377935, -9796444, -30510046, 12935080, 1561737,
2248			3841096, -29003639, -6657642},
2249			{10340844, -6630377, -18656632, -2278430, 12621151, -13339055,
2250			30878497, -11824370, -25584551, 5181966},
2251			},
2252			{
2253			{25940115, -12658025, 17324188, -10307374, -8671468, 15029094,
2254			24396252, -16450922, -2322852, -12388574},
2255			{-21765684, 9916823, -1300409, 4079498, -1028346, 11909559, 1782390,
2256			12641087, 20603771, -6561742},
2257			{-18882287, -11673380, 24849422, 11501709, 13161720, -4768874,
2258			1925523, 11914390, 4662781, 7820689},
2259			},
2260			{
2261			{12241050, -425982, 8132691, 9393934, 32846760, -1599620, 29749456,
2262			12172924, 16136752, 15264020},
2263			{-10349955, -14680563, -8211979, 2330220, -17662549, -14545780,
2264			10658213, 6671822, 19012087, 3772772},
2265			{3753511, -3421066, 10617074, 2028709, 14841030, -6721664, 28718732,
2266			-15762884, 20527771, 12988982},
2267			},
2268			{
2269			{-14822485, -5797269, -3707987, 12689773, -898983, -10914866,
2270			-24183046, -10564943, 3299665, -12424953},
2271			{-16777703, -15253301, -9642417, 4978983, 3308785, 8755439, 6943197,
2272			6461331, -25583147, 8991218},
2273			{-17226263, 1816362, -1673288, -6086439, 31783888, -8175991,
2274			-32948145, 7417950, -30242287, 1507265},
2275			},
2276			{
2277			{29692663, 6829891, -10498800, 4334896, 20945975, -11906496,
2278			-28887608, 8209391, 14606362, -10647073},
2279			{-3481570, 8707081, 32188102, 5672294, 22096700, 1711240, -33020695,
2280			9761487, 4170404, -2085325},
2281			{-11587470, 14855945, -4127778, -1531857, -26649089, 15084046,
2282			22186522, 16002000, -14276837, -8400798},
2283			},
2284			{
2285			{-4811456, 13761029, -31703877, -2483919, -3312471, 7869047,
2286			-7113572, -9620092, 13240845, 10965870},
2287			{-7742563, -8256762, -14768334, -13656260, -23232383, 12387166,
2288			4498947, 14147411, 29514390, 4302863},
2289			{-13413405, -12407859, 20757302, -13801832, 14785143, 8976368,
2290			-5061276, -2144373, 17846988, -13971927},
2291			},
2292			},
2293			{
2294			{
2295			{-2244452, -754728, -4597030, -1066309, -6247172, 1455299,
2296			-21647728, -9214789, -5222701, 12650267},
2297			{-9906797, -16070310, 21134160, 12198166, -27064575, 708126, 387813,
2298			13770293, -19134326, 10958663},
2299			{22470984, 12369526, 23446014, -5441109, -21520802, -9698723,
2300			-11772496, -11574455, -25083830, 4271862},
2301			},
2302			{
2303			{-25169565, -10053642, -19909332, 15361595, -5984358, 2159192,
2304			75375, -4278529, -32526221, 8469673},
2305			{15854970, 4148314, -8893890, 7259002, 11666551, 13824734,
2306			-30531198, 2697372, 24154791, -9460943},
2307			{15446137, -15806644, 29759747, 14019369, 30811221, -9610191,
2308			-31582008, 12840104, 24913809, 9815020},
2309			},
2310			{
2311			{-4709286, -5614269, -31841498, -12288893, -14443537, 10799414,
2312			-9103676, 13438769, 18735128, 9466238},
2313			{11933045, 9281483, 5081055, -5183824, -2628162, -4905629, -7727821,
2314			-10896103, -22728655, 16199064},
2315			{14576810, 379472, -26786533, -8317236, -29426508, -10812974,
2316			-102766, 1876699, 30801119, 2164795},
2317			},
2318			{
2319			{15995086, 3199873, 13672555, 13712240, -19378835, -4647646,
2320			-13081610, -15496269, -13492807, 1268052},
2321			{-10290614, -3659039, -3286592, 10948818, 23037027, 3794475,
2322			-3470338, -12600221, -17055369, 3565904},
2323			{29210088, -9419337, -5919792, -4952785, 10834811, -13327726,
2324			-16512102, -10820713, -27162222, -14030531},
2325			},
2326			{
2327			{-13161890, 15508588, 16663704, -8156150, -28349942, 9019123,
2328			-29183421, -3769423, 2244111, -14001979},
2329			{-5152875, -3800936, -9306475, -6071583, 16243069, 14684434,
2330			-25673088, -16180800, 13491506, 4641841},
2331			{10813417, 643330, -19188515, -728916, 30292062, -16600078,
2332			27548447, -7721242, 14476989, -12767431},
2333			},
2334			{
2335			{10292079, 9984945, 6481436, 8279905, -7251514, 7032743, 27282937,
2336			-1644259, -27912810, 12651324},
2337			{-31185513, -813383, 22271204, 11835308, 10201545, 15351028,
2338			17099662, 3988035, 21721536, -3148940},
2339			{10202177, -6545839, -31373232, -9574638, -32150642, -8119683,
2340			-12906320, 3852694, 13216206, 14842320},
2341			},
2342			{
2343			{-15815640, -10601066, -6538952, -7258995, -6984659, -6581778,
2344			-31500847, 13765824, -27434397, 9900184},
2345			{14465505, -13833331, -32133984, -14738873, -27443187, 12990492,
2346			33046193, 15796406, -7051866, -8040114},
2347			{30924417, -8279620, 6359016, -12816335, 16508377, 9071735,
2348			-25488601, 15413635, 9524356, -7018878},
2349			},
2350			{
2351			{12274201, -13175547, 32627641, -1785326, 6736625, 13267305,
2352			5237659, -5109483, 15663516, 4035784},
2353			{-2951309, 8903985, 17349946, 601635, -16432815, -4612556,
2354			-13732739, -15889334, -22258478, 4659091},
2355			{-16916263, -4952973, -30393711, -15158821, 20774812, 15897498,
2356			5736189, 15026997, -2178256, -13455585},
2357			},
2358			},
2359			{
2360			{
2361			{-8858980, -2219056, 28571666, -10155518, -474467, -10105698,
2362			-3801496, 278095, 23440562, -290208},
2363			{10226241, -5928702, 15139956, 120818, -14867693, 5218603, 32937275,
2364			11551483, -16571960, -7442864},
2365			{17932739, -12437276, -24039557, 10749060, 11316803, 7535897,
2366			22503767, 5561594, -3646624, 3898661},
2367			},
2368			{
2369			{7749907, -969567, -16339731, -16464, -25018111, 15122143, -1573531,
2370			7152530, 21831162, 1245233},
2371			{26958459, -14658026, 4314586, 8346991, -5677764, 11960072,
2372			-32589295, -620035, -30402091, -16716212},
2373			{-12165896, 9166947, 33491384, 13673479, 29787085, 13096535,
2374			6280834, 14587357, -22338025, 13987525},
2375			},
2376			{
2377			{-24349909, 7778775, 21116000, 15572597, -4833266, -5357778,
2378			-4300898, -5124639, -7469781, -2858068},
2379			{9681908, -6737123, -31951644, 13591838, -6883821, 386950, 31622781,
2380			6439245, -14581012, 4091397},
2381			{-8426427, 1470727, -28109679, -1596990, 3978627, -5123623,
2382			-19622683, 12092163, 29077877, -14741988},
2383			},
2384			{
2385			{5269168, -6859726, -13230211, -8020715, 25932563, 1763552,
2386			-5606110, -5505881, -20017847, 2357889},
2387			{32264008, -15407652, -5387735, -1160093, -2091322, -3946900,
2388			23104804, -12869908, 5727338, 189038},
2389			{14609123, -8954470, -6000566, -16622781, -14577387, -7743898,
2390			-26745169, 10942115, -25888931, -14884697},
2391			},
2392			{
2393			{20513500, 5557931, -15604613, 7829531, 26413943, -2019404,
2394			-21378968, 7471781, 13913677, -5137875},
2395			{-25574376, 11967826, 29233242, 12948236, -6754465, 4713227,
2396			-8940970, 14059180, 12878652, 8511905},
2397			{-25656801, 3393631, -2955415, -7075526, -2250709, 9366908,
2398			-30223418, 6812974, 5568676, -3127656},
2399			},
2400			{
2401			{11630004, 12144454, 2116339, 13606037, 27378885, 15676917,
2402			-17408753, -13504373, -14395196, 8070818},
2403			{27117696, -10007378, -31282771, -5570088, 1127282, 12772488,
2404			-29845906, 10483306, -11552749, -1028714},
2405			{10637467, -5688064, 5674781, 1072708, -26343588, -6982302,
2406			-1683975, 9177853, -27493162, 15431203},
2407			},
2408			{
2409			{20525145, 10892566, -12742472, 12779443, -29493034, 16150075,
2410			-28240519, 14943142, -15056790, -7935931},
2411			{-30024462, 5626926, -551567, -9981087, 753598, 11981191, 25244767,
2412			-3239766, -3356550, 9594024},
2413			{-23752644, 2636870, -5163910, -10103818, 585134, 7877383, 11345683,
2414			-6492290, 13352335, -10977084},
2415			},
2416			{
2417			{-1931799, -5407458, 3304649, -12884869, 17015806, -4877091,
2418			-29783850, -7752482, -13215537, -319204},
2419			{20239939, 6607058, 6203985, 3483793, -18386976, -779229, -20723742,
2420			15077870, -22750759, 14523817},
2421			{27406042, -6041657, 27423596, -4497394, 4996214, 10002360,
2422			-28842031, -4545494, -30172742, -4805667},
2423			},
2424			},
2425			{
2426			{
2427			{11374242, 12660715, 17861383, -12540833, 10935568, 1099227,
2428			-13886076, -9091740, -27727044, 11358504},
2429			{-12730809, 10311867, 1510375, 10778093, -2119455, -9145702,
2430			32676003, 11149336, -26123651, 4985768},
2431			{-19096303, 341147, -6197485, -239033, 15756973, -8796662, -983043,
2432			13794114, -19414307, -15621255},
2433			},
2434			{
2435			{6490081, 11940286, 25495923, -7726360, 8668373, -8751316, 3367603,
2436			6970005, -1691065, -9004790},
2437			{1656497, 13457317, 15370807, 6364910, 13605745, 8362338, -19174622,
2438			-5475723, -16796596, -5031438},
2439			{-22273315, -13524424, -64685, -4334223, -18605636, -10921968,
2440			-20571065, -7007978, -99853, -10237333},
2441			},
2442			{
2443			{17747465, 10039260, 19368299, -4050591, -20630635, -16041286,
2444			31992683, -15857976, -29260363, -5511971},
2445			{31932027, -4986141, -19612382, 16366580, 22023614, 88450, 11371999,
2446			-3744247, 4882242, -10626905},
2447			{29796507, 37186, 19818052, 10115756, -11829032, 3352736, 18551198,
2448			3272828, -5190932, -4162409},
2449			},
2450			{
2451			{12501286, 4044383, -8612957, -13392385, -32430052, 5136599,
2452			-19230378, -3529697, 330070, -3659409},
2453			{6384877, 2899513, 17807477, 7663917, -2358888, 12363165, 25366522,
2454			-8573892, -271295, 12071499},
2455			{-8365515, -4042521, 25133448, -4517355, -6211027, 2265927,
2456			-32769618, 1936675, -5159697, 3829363},
2457			},
2458			{
2459			{28425966, -5835433, -577090, -4697198, -14217555, 6870930, 7921550,
2460			-6567787, 26333140, 14267664},
2461			{-11067219, 11871231, 27385719, -10559544, -4585914, -11189312,
2462			10004786, -8709488, -21761224, 8930324},
2463			{-21197785, -16396035, 25654216, -1725397, 12282012, 11008919,
2464			1541940, 4757911, -26491501, -16408940},
2465			},
2466			{
2467			{13537262, -7759490, -20604840, 10961927, -5922820, -13218065,
2468			-13156584, 6217254, -15943699, 13814990},
2469			{-17422573, 15157790, 18705543, 29619, 24409717, -260476, 27361681,
2470			9257833, -1956526, -1776914},
2471			{-25045300, -10191966, 15366585, 15166509, -13105086, 8423556,
2472			-29171540, 12361135, -18685978, 4578290},
2473			},
2474			{
2475			{24579768, 3711570, 1342322, -11180126, -27005135, 14124956,
2476			-22544529, 14074919, 21964432, 8235257},
2477			{-6528613, -2411497, 9442966, -5925588, 12025640, -1487420,
2478			-2981514, -1669206, 13006806, 2355433},
2479			{-16304899, -13605259, -6632427, -5142349, 16974359, -10911083,
2480			27202044, 1719366, 1141648, -12796236},
2481			},
2482			{
2483			{-12863944, -13219986, -8318266, -11018091, -6810145, -4843894,
2484			13475066, -3133972, 32674895, 13715045},
2485			{11423335, -5468059, 32344216, 8962751, 24989809, 9241752,
2486			-13265253, 16086212, -28740881, -15642093},
2487			{-1409668, 12530728, -6368726, 10847387, 19531186, -14132160,
2488			-11709148, 7791794, -27245943, 4383347},
2489			},
2490			},
2491			{
2492			{
2493			{-28970898, 5271447, -1266009, -9736989, -12455236, 16732599,
2494			-4862407, -4906449, 27193557, 6245191},
2495			{-15193956, 5362278, -1783893, 2695834, 4960227, 12840725, 23061898,
2496			3260492, 22510453, 8577507},
2497			{-12632451, 11257346, -32692994, 13548177, -721004, 10879011,
2498			31168030, 13952092, -29571492, -3635906},
2499			},
2500			{
2501			{3877321, -9572739, 32416692, 5405324, -11004407, -13656635,
2502			3759769, 11935320, 5611860, 8164018},
2503			{-16275802, 14667797, 15906460, 12155291, -22111149, -9039718,
2504			32003002, -8832289, 5773085, -8422109},
2505			{-23788118, -8254300, 1950875, 8937633, 18686727, 16459170, -905725,
2506			12376320, 31632953, 190926},
2507			},
2508			{
2509			{-24593607, -16138885, -8423991, 13378746, 14162407, 6901328,
2510			-8288749, 4508564, -25341555, -3627528},
2511			{8884438, -5884009, 6023974, 10104341, -6881569, -4941533, 18722941,
2512			-14786005, -1672488, 827625},
2513			{-32720583, -16289296, -32503547, 7101210, 13354605, 2659080,
2514			-1800575, -14108036, -24878478, 1541286},
2515			},
2516			{
2517			{2901347, -1117687, 3880376, -10059388, -17620940, -3612781,
2518			-21802117, -3567481, 20456845, -1885033},
2519			{27019610, 12299467, -13658288, -1603234, -12861660, -4861471,
2520			-19540150, -5016058, 29439641, 15138866},
2521			{21536104, -6626420, -32447818, -10690208, -22408077, 5175814,
2522			-5420040, -16361163, 7779328, 109896},
2523			},
2524			{
2525			{30279744, 14648750, -8044871, 6425558, 13639621, -743509, 28698390,
2526			12180118, 23177719, -554075},
2527			{26572847, 3405927, -31701700, 12890905, -19265668, 5335866,
2528			-6493768, 2378492, 4439158, -13279347},
2529			{-22716706, 3489070, -9225266, -332753, 18875722, -1140095,
2530			14819434, -12731527, -17717757, -5461437},
2531			},
2532			{
2533			{-5056483, 16566551, 15953661, 3767752, -10436499, 15627060,
2534			-820954, 2177225, 8550082, -15114165},
2535			{-18473302, 16596775, -381660, 15663611, 22860960, 15585581,
2536			-27844109, -3582739, -23260460, -8428588},
2537			{-32480551, 15707275, -8205912, -5652081, 29464558, 2713815,
2538			-22725137, 15860482, -21902570, 1494193},
2539			},
2540			{
2541			{-19562091, -14087393, -25583872, -9299552, 13127842, 759709,
2542			21923482, 16529112, 8742704, 12967017},
2543			{-28464899, 1553205, 32536856, -10473729, -24691605, -406174,
2544			-8914625, -2933896, -29903758, 15553883},
2545			{21877909, 3230008, 9881174, 10539357, -4797115, 2841332, 11543572,
2546			14513274, 19375923, -12647961},
2547			},
2548			{
2549			{8832269, -14495485, 13253511, 5137575, 5037871, 4078777, 24880818,
2550			-6222716, 2862653, 9455043},
2551			{29306751, 5123106, 20245049, -14149889, 9592566, 8447059, -2077124,
2552			-2990080, 15511449, 4789663},
2553			{-20679756, 7004547, 8824831, -9434977, -4045704, -3750736,
2554			-5754762, 108893, 23513200, 16652362},
2555			},
2556			},
2557			{
2558			{
2559			{-33256173, 4144782, -4476029, -6579123, 10770039, -7155542,
2560			-6650416, -12936300, -18319198, 10212860},
2561			{2756081, 8598110, 7383731, -6859892, 22312759, -1105012, 21179801,
2562			2600940, -9988298, -12506466},
2563			{-24645692, 13317462, -30449259, -15653928, 21365574, -10869657,
2564			11344424, 864440, -2499677, -16710063},
2565			},
2566			{
2567			{-26432803, 6148329, -17184412, -14474154, 18782929, -275997,
2568			-22561534, 211300, 2719757, 4940997},
2569			{-1323882, 3911313, -6948744, 14759765, -30027150, 7851207,
2570			21690126, 8518463, 26699843, 5276295},
2571			{-13149873, -6429067, 9396249, 365013, 24703301, -10488939, 1321586,
2572			149635, -15452774, 7159369},
2573			},
2574			{
2575			{9987780, -3404759, 17507962, 9505530, 9731535, -2165514, 22356009,
2576			8312176, 22477218, -8403385},
2577			{18155857, -16504990, 19744716, 9006923, 15154154, -10538976,
2578			24256460, -4864995, -22548173, 9334109},
2579			{2986088, -4911893, 10776628, -3473844, 10620590, -7083203,
2580			-21413845, 14253545, -22587149, 536906},
2581			},
2582			{
2583			{4377756, 8115836, 24567078, 15495314, 11625074, 13064599, 7390551,
2584			10589625, 10838060, -15420424},
2585			{-19342404, 867880, 9277171, -3218459, -14431572, -1986443,
2586			19295826, -15796950, 6378260, 699185},
2587			{7895026, 4057113, -7081772, -13077756, -17886831, -323126, -716039,
2588			15693155, -5045064, -13373962},
2589			},
2590			{
2591			{-7737563, -5869402, -14566319, -7406919, 11385654, 13201616,
2592			31730678, -10962840, -3918636, -9669325},
2593			{10188286, -15770834, -7336361, 13427543, 22223443, 14896287,
2594			30743455, 7116568, -21786507, 5427593},
2595			{696102, 13206899, 27047647, -10632082, 15285305, -9853179,
2596			10798490, -4578720, 19236243, 12477404},
2597			},
2598			{
2599			{-11229439, 11243796, -17054270, -8040865, -788228, -8167967,
2600			-3897669, 11180504, -23169516, 7733644},
2601			{17800790, -14036179, -27000429, -11766671, 23887827, 3149671,
2602			23466177, -10538171, 10322027, 15313801},
2603			{26246234, 11968874, 32263343, -5468728, 6830755, -13323031,
2604			-15794704, -101982, -24449242, 10890804},
2605			},
2606			{
2607			{-31365647, 10271363, -12660625, -6267268, 16690207, -13062544,
2608			-14982212, 16484931, 25180797, -5334884},
2609			{-586574, 10376444, -32586414, -11286356, 19801893, 10997610,
2610			2276632, 9482883, 316878, 13820577},
2611			{-9882808, -4510367, -2115506, 16457136, -11100081, 11674996,
2612			30756178, -7515054, 30696930, -3712849},
2613			},
2614			{
2615			{32988917, -9603412, 12499366, 7910787, -10617257, -11931514,
2616			-7342816, -9985397, -32349517, 7392473},
2617			{-8855661, 15927861, 9866406, -3649411, -2396914, -16655781,
2618			-30409476, -9134995, 25112947, -2926644},
2619			{-2504044, -436966, 25621774, -5678772, 15085042, -5479877,
2620			-24884878, -13526194, 5537438, -13914319},
2621			},
2622			},
2623			{
2624			{
2625			{-11225584, 2320285, -9584280, 10149187, -33444663, 5808648,
2626			-14876251, -1729667, 31234590, 6090599},
2627			{-9633316, 116426, 26083934, 2897444, -6364437, -2688086, 609721,
2628			15878753, -6970405, -9034768},
2629			{-27757857, 247744, -15194774, -9002551, 23288161, -10011936,
2630			-23869595, 6503646, 20650474, 1804084},
2631			},
2632			{
2633			{-27589786, 15456424, 8972517, 8469608, 15640622, 4439847, 3121995,
2634			-10329713, 27842616, -202328},
2635			{-15306973, 2839644, 22530074, 10026331, 4602058, 5048462, 28248656,
2636			5031932, -11375082, 12714369},
2637			{20807691, -7270825, 29286141, 11421711, -27876523, -13868230,
2638			-21227475, 1035546, -19733229, 12796920},
2639			},
2640			{
2641			{12076899, -14301286, -8785001, -11848922, -25012791, 16400684,
2642			-17591495, -12899438, 3480665, -15182815},
2643			{-32361549, 5457597, 28548107, 7833186, 7303070, -11953545,
2644			-24363064, -15921875, -33374054, 2771025},
2645			{-21389266, 421932, 26597266, 6860826, 22486084, -6737172,
2646			-17137485, -4210226, -24552282, 15673397},
2647			},
2648			{
2649			{-20184622, 2338216, 19788685, -9620956, -4001265, -8740893,
2650			-20271184, 4733254, 3727144, -12934448},
2651			{6120119, 814863, -11794402, -622716, 6812205, -15747771, 2019594,
2652			7975683, 31123697, -10958981},
2653			{30069250, -11435332, 30434654, 2958439, 18399564, -976289,
2654			12296869, 9204260, -16432438, 9648165},
2655			},
2656			{
2657			{32705432, -1550977, 30705658, 7451065, -11805606, 9631813, 3305266,
2658			5248604, -26008332, -11377501},
2659			{17219865, 2375039, -31570947, -5575615, -19459679, 9219903, 294711,
2660			15298639, 2662509, -16297073},
2661			{-1172927, -7558695, -4366770, -4287744, -21346413, -8434326,
2662			32087529, -1222777, 32247248, -14389861},
2663			},
2664			{
2665			{14312628, 1221556, 17395390, -8700143, -4945741, -8684635,
2666			-28197744, -9637817, -16027623, -13378845},
2667			{-1428825, -9678990, -9235681, 6549687, -7383069, -468664, 23046502,
2668			9803137, 17597934, 2346211},
2669			{18510800, 15337574, 26171504, 981392, -22241552, 7827556,
2670			-23491134, -11323352, 3059833, -11782870},
2671			},
2672			{
2673			{10141598, 6082907, 17829293, -1947643, 9830092, 13613136,
2674			-25556636, -5544586, -33502212, 3592096},
2675			{33114168, -15889352, -26525686, -13343397, 33076705, 8716171,
2676			1151462, 1521897, -982665, -6837803},
2677			{-32939165, -4255815, 23947181, -324178, -33072974, -12305637,
2678			-16637686, 3891704, 26353178, 693168},
2679			},
2680			{
2681			{30374239, 1595580, -16884039, 13186931, 4600344, 406904, 9585294,
2682			-400668, 31375464, 14369965},
2683			{-14370654, -7772529, 1510301, 6434173, -18784789, -6262728,
2684			32732230, -13108839, 17901441, 16011505},
2685			{18171223, -11934626, -12500402, 15197122, -11038147, -15230035,
2686			-19172240, -16046376, 8764035, 12309598},
2687			},
2688			},
2689			{
2690			{
2691			{5975908, -5243188, -19459362, -9681747, -11541277, 14015782,
2692			-23665757, 1228319, 17544096, -10593782},
2693			{5811932, -1715293, 3442887, -2269310, -18367348, -8359541,
2694			-18044043, -15410127, -5565381, 12348900},
2695			{-31399660, 11407555, 25755363, 6891399, -3256938, 14872274,
2696			-24849353, 8141295, -10632534, -585479},
2697			},
2698			{
2699			{-12675304, 694026, -5076145, 13300344, 14015258, -14451394,
2700			-9698672, -11329050, 30944593, 1130208},
2701			{8247766, -6710942, -26562381, -7709309, -14401939, -14648910,
2702			4652152, 2488540, 23550156, -271232},
2703			{17294316, -3788438, 7026748, 15626851, 22990044, 113481, 2267737,
2704			-5908146, -408818, -137719},
2705			},
2706			{
2707			{16091085, -16253926, 18599252, 7340678, 2137637, -1221657,
2708			-3364161, 14550936, 3260525, -7166271},
2709			{-4910104, -13332887, 18550887, 10864893, -16459325, -7291596,
2710			-23028869, -13204905, -12748722, 2701326},
2711			{-8574695, 16099415, 4629974, -16340524, -20786213, -6005432,
2712			-10018363, 9276971, 11329923, 1862132},
2713			},
2714			{
2715			{14763076, -15903608, -30918270, 3689867, 3511892, 10313526,
2716			-21951088, 12219231, -9037963, -940300},
2717			{8894987, -3446094, 6150753, 3013931, 301220, 15693451, -31981216,
2718			-2909717, -15438168, 11595570},
2719			{15214962, 3537601, -26238722, -14058872, 4418657, -15230761,
2720			13947276, 10730794, -13489462, -4363670},
2721			},
2722			{
2723			{-2538306, 7682793, 32759013, 263109, -29984731, -7955452,
2724			-22332124, -10188635, 977108, 699994},
2725			{-12466472, 4195084, -9211532, 550904, -15565337, 12917920,
2726			19118110, -439841, -30534533, -14337913},
2727			{31788461, -14507657, 4799989, 7372237, 8808585, -14747943, 9408237,
2728			-10051775, 12493932, -5409317},
2729			},
2730			{
2731			{-25680606, 5260744, -19235809, -6284470, -3695942, 16566087,
2732			27218280, 2607121, 29375955, 6024730},
2733			{842132, -2794693, -4763381, -8722815, 26332018, -12405641,
2734			11831880, 6985184, -9940361, 2854096},
2735			{-4847262, -7969331, 2516242, -5847713, 9695691, -7221186, 16512645,
2736			960770, 12121869, 16648078},
2737			},
2738			{
2739			{-15218652, 14667096, -13336229, 2013717, 30598287, -464137,
2740			-31504922, -7882064, 20237806, 2838411},
2741			{-19288047, 4453152, 15298546, -16178388, 22115043, -15972604,
2742			12544294, -13470457, 1068881, -12499905},
2743			{-9558883, -16518835, 33238498, 13506958, 30505848, -1114596,
2744			-8486907, -2630053, 12521378, 4845654},
2745			},
2746			{
2747			{-28198521, 10744108, -2958380, 10199664, 7759311, -13088600,
2748			3409348, -873400, -6482306, -12885870},
2749			{-23561822, 6230156, -20382013, 10655314, -24040585, -11621172,
2750			10477734, -1240216, -3113227, 13974498},
2751			{12966261, 15550616, -32038948, -1615346, 21025980, -629444,
2752			5642325, 7188737, 18895762, 12629579},
2753			},
2754			},
2755			{
2756			{
2757			{14741879, -14946887, 22177208, -11721237, 1279741, 8058600,
2758			11758140, 789443, 32195181, 3895677},
2759			{10758205, 15755439, -4509950, 9243698, -4879422, 6879879, -2204575,
2760			-3566119, -8982069, 4429647},
2761			{-2453894, 15725973, -20436342, -10410672, -5803908, -11040220,
2762			-7135870, -11642895, 18047436, -15281743},
2763			},
2764			{
2765			{-25173001, -11307165, 29759956, 11776784, -22262383, -15820455,
2766			10993114, -12850837, -17620701, -9408468},
2767			{21987233, 700364, -24505048, 14972008, -7774265, -5718395,
2768			32155026, 2581431, -29958985, 8773375},
2769			{-25568350, 454463, -13211935, 16126715, 25240068, 8594567,
2770			20656846, 12017935, -7874389, -13920155},
2771			},
2772			{
2773			{6028182, 6263078, -31011806, -11301710, -818919, 2461772,
2774			-31841174, -5468042, -1721788, -2776725},
2775			{-12278994, 16624277, 987579, -5922598, 32908203, 1248608, 7719845,
2776			-4166698, 28408820, 6816612},
2777			{-10358094, -8237829, 19549651, -12169222, 22082623, 16147817,
2778			20613181, 13982702, -10339570, 5067943},
2779			},
2780			{
2781			{-30505967, -3821767, 12074681, 13582412, -19877972, 2443951,
2782			-19719286, 12746132, 5331210, -10105944},
2783			{30528811, 3601899, -1957090, 4619785, -27361822, -15436388,
2784			24180793, -12570394, 27679908, -1648928},
2785			{9402404, -13957065, 32834043, 10838634, -26580150, -13237195,
2786			26653274, -8685565, 22611444, -12715406},
2787			},
2788			{
2789			{22190590, 1118029, 22736441, 15130463, -30460692, -5991321,
2790			19189625, -4648942, 4854859, 6622139},
2791			{-8310738, -2953450, -8262579, -3388049, -10401731, -271929,
2792			13424426, -3567227, 26404409, 13001963},
2793			{-31241838, -15415700, -2994250, 8939346, 11562230, -12840670,
2794			-26064365, -11621720, -15405155, 11020693},
2795			},
2796			{
2797			{1866042, -7949489, -7898649, -10301010, 12483315, 13477547,
2798			3175636, -12424163, 28761762, 1406734},
2799			{-448555, -1777666, 13018551, 3194501, -9580420, -11161737,
2800			24760585, -4347088, 25577411, -13378680},
2801			{-24290378, 4759345, -690653, -1852816, 2066747, 10693769,
2802			-29595790, 9884936, -9368926, 4745410},
2803			},
2804			{
2805			{-9141284, 6049714, -19531061, -4341411, -31260798, 9944276,
2806			-15462008, -11311852, 10931924, -11931931},
2807			{-16561513, 14112680, -8012645, 4817318, -8040464, -11414606,
2808			-22853429, 10856641, -20470770, 13434654},
2809			{22759489, -10073434, -16766264, -1871422, 13637442, -10168091,
2810			1765144, -12654326, 28445307, -5364710},
2811			},
2812			{
2813			{29875063, 12493613, 2795536, -3786330, 1710620, 15181182,
2814			-10195717, -8788675, 9074234, 1167180},
2815			{-26205683, 11014233, -9842651, -2635485, -26908120, 7532294,
2816			-18716888, -9535498, 3843903, 9367684},
2817			{-10969595, -6403711, 9591134, 9582310, 11349256, 108879, 16235123,
2818			8601684, -139197, 4242895},
2819			},
2820			},
2821			{
2822			{
2823			{22092954, -13191123, -2042793, -11968512, 32186753, -11517388,
2824			-6574341, 2470660, -27417366, 16625501},
2825			{-11057722, 3042016, 13770083, -9257922, 584236, -544855, -7770857,
2826			2602725, -27351616, 14247413},
2827			{6314175, -10264892, -32772502, 15957557, -10157730, 168750,
2828			-8618807, 14290061, 27108877, -1180880},
2829			},
2830			{
2831			{-8586597, -7170966, 13241782, 10960156, -32991015, -13794596,
2832			33547976, -11058889, -27148451, 981874},
2833			{22833440, 9293594, -32649448, -13618667, -9136966, 14756819,
2834			-22928859, -13970780, -10479804, -16197962},
2835			{-7768587, 3326786, -28111797, 10783824, 19178761, 14905060,
2836			22680049, 13906969, -15933690, 3797899},
2837			},
2838			{
2839			{21721356, -4212746, -12206123, 9310182, -3882239, -13653110,
2840			23740224, -2709232, 20491983, -8042152},
2841			{9209270, -15135055, -13256557, -6167798, -731016, 15289673,
2842			25947805, 15286587, 30997318, -6703063},
2843			{7392032, 16618386, 23946583, -8039892, -13265164, -1533858,
2844			-14197445, -2321576, 17649998, -250080},
2845			},
2846			{
2847			{-9301088, -14193827, 30609526, -3049543, -25175069, -1283752,
2848			-15241566, -9525724, -2233253, 7662146},
2849			{-17558673, 1763594, -33114336, 15908610, -30040870, -12174295,
2850			7335080, -8472199, -3174674, 3440183},
2851			{-19889700, -5977008, -24111293, -9688870, 10799743, -16571957,
2852			40450, -4431835, 4862400, 1133},
2853			},
2854			{
2855			{-32856209, -7873957, -5422389, 14860950, -16319031, 7956142,
2856			7258061, 311861, -30594991, -7379421},
2857			{-3773428, -1565936, 28985340, 7499440, 24445838, 9325937, 29727763,
2858			16527196, 18278453, 15405622},
2859			{-4381906, 8508652, -19898366, -3674424, -5984453, 15149970,
2860			-13313598, 843523, -21875062, 13626197},
2861			},
2862			{
2863			{2281448, -13487055, -10915418, -2609910, 1879358, 16164207,
2864			-10783882, 3953792, 13340839, 15928663},
2865			{31727126, -7179855, -18437503, -8283652, 2875793, -16390330,
2866			-25269894, -7014826, -23452306, 5964753},
2867			{4100420, -5959452, -17179337, 6017714, -18705837, 12227141,
2868			-26684835, 11344144, 2538215, -7570755},
2869			},
2870			{
2871			{-9433605, 6123113, 11159803, -2156608, 30016280, 14966241,
2872			-20474983, 1485421, -629256, -15958862},
2873			{-26804558, 4260919, 11851389, 9658551, -32017107, 16367492,
2874			-20205425, -13191288, 11659922, -11115118},
2875			{26180396, 10015009, -30844224, -8581293, 5418197, 9480663, 2231568,
2876			-10170080, 33100372, -1306171},
2877			},
2878			{
2879			{15121113, -5201871, -10389905, 15427821, -27509937, -15992507,
2880			21670947, 4486675, -5931810, -14466380},
2881			{16166486, -9483733, -11104130, 6023908, -31926798, -1364923,
2882			2340060, -16254968, -10735770, -10039824},
2883			{28042865, -3557089, -12126526, 12259706, -3717498, -6945899,
2884			6766453, -8689599, 18036436, 5803270},
2885			},
2886			},
2887			{
2888			{
2889			{-817581, 6763912, 11803561, 1585585, 10958447, -2671165, 23855391,
2890			4598332, -6159431, -14117438},
2891			{-31031306, -14256194, 17332029, -2383520, 31312682, -5967183,
2892			696309, 50292, -20095739, 11763584},
2893			{-594563, -2514283, -32234153, 12643980, 12650761, 14811489, 665117,
2894			-12613632, -19773211, -10713562},
2895			},
2896			{
2897			{30464590, -11262872, -4127476, -12734478, 19835327, -7105613,
2898			-24396175, 2075773, -17020157, 992471},
2899			{18357185, -6994433, 7766382, 16342475, -29324918, 411174, 14578841,
2900			8080033, -11574335, -10601610},
2901			{19598397, 10334610, 12555054, 2555664, 18821899, -10339780,
2902			21873263, 16014234, 26224780, 16452269},
2903			},
2904			{
2905			{-30223925, 5145196, 5944548, 16385966, 3976735, 2009897, -11377804,
2906			-7618186, -20533829, 3698650},
2907			{14187449, 3448569, -10636236, -10810935, -22663880, -3433596,
2908			7268410, -10890444, 27394301, 12015369},
2909			{19695761, 16087646, 28032085, 12999827, 6817792, 11427614,
2910			20244189, -1312777, -13259127, -3402461},
2911			},
2912			{
2913			{30860103, 12735208, -1888245, -4699734, -16974906, 2256940,
2914			-8166013, 12298312, -8550524, -10393462},
2915			{-5719826, -11245325, -1910649, 15569035, 26642876, -7587760,
2916			-5789354, -15118654, -4976164, 12651793},
2917			{-2848395, 9953421, 11531313, -5282879, 26895123, -12697089,
2918			-13118820, -16517902, 9768698, -2533218},
2919			},
2920			{
2921			{-24719459, 1894651, -287698, -4704085, 15348719, -8156530,
2922			32767513, 12765450, 4940095, 10678226},
2923			{18860224, 15980149, -18987240, -1562570, -26233012, -11071856,
2924			-7843882, 13944024, -24372348, 16582019},
2925			{-15504260, 4970268, -29893044, 4175593, -20993212, -2199756,
2926			-11704054, 15444560, -11003761, 7989037},
2927			},
2928			{
2929			{31490452, 5568061, -2412803, 2182383, -32336847, 4531686,
2930			-32078269, 6200206, -19686113, -14800171},
2931			{-17308668, -15879940, -31522777, -2831, -32887382, 16375549,
2932			8680158, -16371713, 28550068, -6857132},
2933			{-28126887, -5688091, 16837845, -1820458, -6850681, 12700016,
2934			-30039981, 4364038, 1155602, 5988841},
2935			},
2936			{
2937			{21890435, -13272907, -12624011, 12154349, -7831873, 15300496,
2938			23148983, -4470481, 24618407, 8283181},
2939			{-33136107, -10512751, 9975416, 6841041, -31559793, 16356536,
2940			3070187, -7025928, 1466169, 10740210},
2941			{-1509399, -15488185, -13503385, -10655916, 32799044, 909394,
2942			-13938903, -5779719, -32164649, -15327040},
2943			},
2944			{
2945			{3960823, -14267803, -28026090, -15918051, -19404858, 13146868,
2946			15567327, 951507, -3260321, -573935},
2947			{24740841, 5052253, -30094131, 8961361, 25877428, 6165135,
2948			-24368180, 14397372, -7380369, -6144105},
2949			{-28888365, 3510803, -28103278, -1158478, -11238128, -10631454,
2950			-15441463, -14453128, -1625486, -6494814},
2951			},
2952			},
2953			{
2954			{
2955			{793299, -9230478, 8836302, -6235707, -27360908, -2369593, 33152843,
2956			-4885251, -9906200, -621852},
2957			{5666233, 525582, 20782575, -8038419, -24538499, 14657740, 16099374,
2958			1468826, -6171428, -15186581},
2959			{-4859255, -3779343, -2917758, -6748019, 7778750, 11688288,
2960			-30404353, -9871238, -1558923, -9863646},
2961			},
2962			{
2963			{10896332, -7719704, 824275, 472601, -19460308, 3009587, 25248958,
2964			14783338, -30581476, -15757844},
2965			{10566929, 12612572, -31944212, 11118703, -12633376, 12362879,
2966			21752402, 8822496, 24003793, 14264025},
2967			{27713862, -7355973, -11008240, 9227530, 27050101, 2504721,
2968			23886875, -13117525, 13958495, -5732453},
2969			},
2970			{
2971			{-23481610, 4867226, -27247128, 3900521, 29838369, -8212291,
2972			-31889399, -10041781, 7340521, -15410068},
2973			{4646514, -8011124, -22766023, -11532654, 23184553, 8566613,
2974			31366726, -1381061, -15066784, -10375192},
2975			{-17270517, 12723032, -16993061, 14878794, 21619651, -6197576,
2976			27584817, 3093888, -8843694, 3849921},
2977			},
2978			{
2979			{-9064912, 2103172, 25561640, -15125738, -5239824, 9582958,
2980			32477045, -9017955, 5002294, -15550259},
2981			{-12057553, -11177906, 21115585, -13365155, 8808712, -12030708,
2982			16489530, 13378448, -25845716, 12741426},
2983			{-5946367, 10645103, -30911586, 15390284, -3286982, -7118677,
2984			24306472, 15852464, 28834118, -7646072},
2985			},
2986			{
2987			{-17335748, -9107057, -24531279, 9434953, -8472084, -583362,
2988			-13090771, 455841, 20461858, 5491305},
2989			{13669248, -16095482, -12481974, -10203039, -14569770, -11893198,
2990			-24995986, 11293807, -28588204, -9421832},
2991			{28497928, 6272777, -33022994, 14470570, 8906179, -1225630,
2992			18504674, -14165166, 29867745, -8795943},
2993			},
2994			{
2995			{-16207023, 13517196, -27799630, -13697798, 24009064, -6373891,
2996			-6367600, -13175392, 22853429, -4012011},
2997			{24191378, 16712145, -13931797, 15217831, 14542237, 1646131,
2998			18603514, -11037887, 12876623, -2112447},
2999			{17902668, 4518229, -411702, -2829247, 26878217, 5258055, -12860753,
3000			608397, 16031844, 3723494},
3001			},
3002			{
3003			{-28632773, 12763728, -20446446, 7577504, 33001348, -13017745,
3004			17558842, -7872890, 23896954, -4314245},
3005			{-20005381, -12011952, 31520464, 605201, 2543521, 5991821, -2945064,
3006			7229064, -9919646, -8826859},
3007			{28816045, 298879, -28165016, -15920938, 19000928, -1665890,
3008			-12680833, -2949325, -18051778, -2082915},
3009			},
3010			{
3011			{16000882, -344896, 3493092, -11447198, -29504595, -13159789,
3012			12577740, 16041268, -19715240, 7847707},
3013			{10151868, 10572098, 27312476, 7922682, 14825339, 4723128,
3014			-32855931, -6519018, -10020567, 3852848},
3015			{-11430470, 15697596, -21121557, -4420647, 5386314, 15063598,
3016			16514493, -15932110, 29330899, -15076224},
3017			},
3018			},
3019			{
3020			{
3021			{-25499735, -4378794, -15222908, -6901211, 16615731, 2051784,
3022			3303702, 15490, -27548796, 12314391},
3023			{15683520, -6003043, 18109120, -9980648, 15337968, -5997823,
3024			-16717435, 15921866, 16103996, -3731215},
3025			{-23169824, -10781249, 13588192, -1628807, -3798557, -1074929,
3026			-19273607, 5402699, -29815713, -9841101},
3027			},
3028			{
3029			{23190676, 2384583, -32714340, 3462154, -29903655, -1529132,
3030			-11266856, 8911517, -25205859, 2739713},
3031			{21374101, -3554250, -33524649, 9874411, 15377179, 11831242,
3032			-33529904, 6134907, 4931255, 11987849},
3033			{-7732, -2978858, -16223486, 7277597, 105524, -322051, -31480539,
3034			13861388, -30076310, 10117930},
3035			},
3036			{
3037			{-29501170, -10744872, -26163768, 13051539, -25625564, 5089643,
3038			-6325503, 6704079, 12890019, 15728940},
3039			{-21972360, -11771379, -951059, -4418840, 14704840, 2695116, 903376,
3040			-10428139, 12885167, 8311031},
3041			{-17516482, 5352194, 10384213, -13811658, 7506451, 13453191,
3042			26423267, 4384730, 1888765, -5435404},
3043			},
3044			{
3045			{-25817338, -3107312, -13494599, -3182506, 30896459, -13921729,
3046			-32251644, -12707869, -19464434, -3340243},
3047			{-23607977, -2665774, -526091, 4651136, 5765089, 4618330, 6092245,
3048			14845197, 17151279, -9854116},
3049			{-24830458, -12733720, -15165978, 10367250, -29530908, -265356,
3050			22825805, -7087279, -16866484, 16176525},
3051			},
3052			{
3053			{-23583256, 6564961, 20063689, 3798228, -4740178, 7359225, 2006182,
3054			-10363426, -28746253, -10197509},
3055			{-10626600, -4486402, -13320562, -5125317, 3432136, -6393229,
3056			23632037, -1940610, 32808310, 1099883},
3057			{15030977, 5768825, -27451236, -2887299, -6427378, -15361371,
3058			-15277896, -6809350, 2051441, -15225865},
3059			},
3060			{
3061			{-3362323, -7239372, 7517890, 9824992, 23555850, 295369, 5148398,
3062			-14154188, -22686354, 16633660},
3063			{4577086, -16752288, 13249841, -15304328, 19958763, -14537274,
3064			18559670, -10759549, 8402478, -9864273},
3065			{-28406330, -1051581, -26790155, -907698, -17212414, -11030789,
3066			9453451, -14980072, 17983010, 9967138},
3067			},
3068			{
3069			{-25762494, 6524722, 26585488, 9969270, 24709298, 1220360, -1677990,
3070			7806337, 17507396, 3651560},
3071			{-10420457, -4118111, 14584639, 15971087, -15768321, 8861010,
3072			26556809, -5574557, -18553322, -11357135},
3073			{2839101, 14284142, 4029895, 3472686, 14402957, 12689363, -26642121,
3074			8459447, -5605463, -7621941},
3075			},
3076			{
3077			{-4839289, -3535444, 9744961, 2871048, 25113978, 3187018, -25110813,
3078			-849066, 17258084, -7977739},
3079			{18164541, -10595176, -17154882, -1542417, 19237078, -9745295,
3080			23357533, -15217008, 26908270, 12150756},
3081			{-30264870, -7647865, 5112249, -7036672, -1499807, -6974257, 43168,
3082			-5537701, -32302074, 16215819},
3083			},
3084			},
3085			{
3086			{
3087			{-6898905, 9824394, -12304779, -4401089, -31397141, -6276835,
3088			32574489, 12532905, -7503072, -8675347},
3089			{-27343522, -16515468, -27151524, -10722951, 946346, 16291093,
3090			254968, 7168080, 21676107, -1943028},
3091			{21260961, -8424752, -16831886, -11920822, -23677961, 3968121,
3092			-3651949, -6215466, -3556191, -7913075},
3093			},
3094			{
3095			{16544754, 13250366, -16804428, 15546242, -4583003, 12757258,
3096			-2462308, -8680336, -18907032, -9662799},
3097			{-2415239, -15577728, 18312303, 4964443, -15272530, -12653564,
3098			26820651, 16690659, 25459437, -4564609},
3099			{-25144690, 11425020, 28423002, -11020557, -6144921, -15826224,
3100			9142795, -2391602, -6432418, -1644817},
3101			},
3102			{
3103			{-23104652, 6253476, 16964147, -3768872, -25113972, -12296437,
3104			-27457225, -16344658, 6335692, 7249989},
3105			{-30333227, 13979675, 7503222, -12368314, -11956721, -4621693,
3106			-30272269, 2682242, 25993170, -12478523},
3107			{4364628, 5930691, 32304656, -10044554, -8054781, 15091131,
3108			22857016, -10598955, 31820368, 15075278},
3109			},
3110			{
3111			{31879134, -8918693, 17258761, 90626, -8041836, -4917709, 24162788,
3112			-9650886, -17970238, 12833045},
3113			{19073683, 14851414, -24403169, -11860168, 7625278, 11091125,
3114			-19619190, 2074449, -9413939, 14905377},
3115			{24483667, -11935567, -2518866, -11547418, -1553130, 15355506,
3116			-25282080, 9253129, 27628530, -7555480},
3117			},
3118			{
3119			{17597607, 8340603, 19355617, 552187, 26198470, -3176583, 4593324,
3120			-9157582, -14110875, 15297016},
3121			{510886, 14337390, -31785257, 16638632, 6328095, 2713355, -20217417,
3122			-11864220, 8683221, 2921426},
3123			{18606791, 11874196, 27155355, -5281482, -24031742, 6265446,
3124			-25178240, -1278924, 4674690, 13890525},
3125			},
3126			{
3127			{13609624, 13069022, -27372361, -13055908, 24360586, 9592974,
3128			14977157, 9835105, 4389687, 288396},
3129			{9922506, -519394, 13613107, 5883594, -18758345, -434263, -12304062,
3130			8317628, 23388070, 16052080},
3131			{12720016, 11937594, -31970060, -5028689, 26900120, 8561328,
3132			-20155687, -11632979, -14754271, -10812892},
3133			},
3134			{
3135			{15961858, 14150409, 26716931, -665832, -22794328, 13603569,
3136			11829573, 7467844, -28822128, 929275},
3137			{11038231, -11582396, -27310482, -7316562, -10498527, -16307831,
3138			-23479533, -9371869, -21393143, 2465074},
3139			{20017163, -4323226, 27915242, 1529148, 12396362, 15675764,
3140			13817261, -9658066, 2463391, -4622140},
3141			},
3142			{
3143			{-16358878, -12663911, -12065183, 4996454, -1256422, 1073572,
3144			9583558, 12851107, 4003896, 12673717},
3145			{-1731589, -15155870, -3262930, 16143082, 19294135, 13385325,
3146			14741514, -9103726, 7903886, 2348101},
3147			{24536016, -16515207, 12715592, -3862155, 1511293, 10047386,
3148			-3842346, -7129159, -28377538, 10048127},
3149			},
3150			},
3151			{
3152			{
3153			{-12622226, -6204820, 30718825, 2591312, -10617028, 12192840,
3154			18873298, -7297090, -32297756, 15221632},
3155			{-26478122, -11103864, 11546244, -1852483, 9180880, 7656409,
3156			-21343950, 2095755, 29769758, 6593415},
3157			{-31994208, -2907461, 4176912, 3264766, 12538965, -868111, 26312345,
3158			-6118678, 30958054, 8292160},
3159			},
3160			{
3161			{31429822, -13959116, 29173532, 15632448, 12174511, -2760094,
3162			32808831, 3977186, 26143136, -3148876},
3163			{22648901, 1402143, -22799984, 13746059, 7936347, 365344, -8668633,
3164			-1674433, -3758243, -2304625},
3165			{-15491917, 8012313, -2514730, -12702462, -23965846, -10254029,
3166			-1612713, -1535569, -16664475, 8194478},
3167			},
3168			{
3169			{27338066, -7507420, -7414224, 10140405, -19026427, -6589889,
3170			27277191, 8855376, 28572286, 3005164},
3171			{26287124, 4821776, 25476601, -4145903, -3764513, -15788984,
3172			-18008582, 1182479, -26094821, -13079595},
3173			{-7171154, 3178080, 23970071, 6201893, -17195577, -4489192,
3174			-21876275, -13982627, 32208683, -1198248},
3175			},
3176			{
3177			{-16657702, 2817643, -10286362, 14811298, 6024667, 13349505,
3178			-27315504, -10497842, -27672585, -11539858},
3179			{15941029, -9405932, -21367050, 8062055, 31876073, -238629,
3180			-15278393, -1444429, 15397331, -4130193},
3181			{8934485, -13485467, -23286397, -13423241, -32446090, 14047986,
3182			31170398, -1441021, -27505566, 15087184},
3183			},
3184			{
3185			{-18357243, -2156491, 24524913, -16677868, 15520427, -6360776,
3186			-15502406, 11461896, 16788528, -5868942},
3187			{-1947386, 16013773, 21750665, 3714552, -17401782, -16055433,
3188			-3770287, -10323320, 31322514, -11615635},
3189			{21426655, -5650218, -13648287, -5347537, -28812189, -4920970,
3190			-18275391, -14621414, 13040862, -12112948},
3191			},
3192			{
3193			{11293895, 12478086, -27136401, 15083750, -29307421, 14748872,
3194			14555558, -13417103, 1613711, 4896935},
3195			{-25894883, 15323294, -8489791, -8057900, 25967126, -13425460,
3196			2825960, -4897045, -23971776, -11267415},
3197			{-15924766, -5229880, -17443532, 6410664, 3622847, 10243618,
3198			20615400, 12405433, -23753030, -8436416},
3199			},
3200			{
3201			{-7091295, 12556208, -20191352, 9025187, -17072479, 4333801,
3202			4378436, 2432030, 23097949, -566018},
3203			{4565804, -16025654, 20084412, -7842817, 1724999, 189254, 24767264,
3204			10103221, -18512313, 2424778},
3205			{366633, -11976806, 8173090, -6890119, 30788634, 5745705, -7168678,
3206			1344109, -3642553, 12412659},
3207			},
3208			{
3209			{-24001791, 7690286, 14929416, -168257, -32210835, -13412986,
3210			24162697, -15326504, -3141501, 11179385},
3211			{18289522, -14724954, 8056945, 16430056, -21729724, 7842514,
3212			-6001441, -1486897, -18684645, -11443503},
3213			{476239, 6601091, -6152790, -9723375, 17503545, -4863900, 27672959,
3214			13403813, 11052904, 5219329},
3215			},
3216			},
3217			{
3218			{
3219			{20678546, -8375738, -32671898, 8849123, -5009758, 14574752,
3220			31186971, -3973730, 9014762, -8579056},
3221			{-13644050, -10350239, -15962508, 5075808, -1514661, -11534600,
3222			-33102500, 9160280, 8473550, -3256838},
3223			{24900749, 14435722, 17209120, -15292541, -22592275, 9878983,
3224			-7689309, -16335821, -24568481, 11788948},
3225			},
3226			{
3227			{-3118155, -11395194, -13802089, 14797441, 9652448, -6845904,
3228			-20037437, 10410733, -24568470, -1458691},
3229			{-15659161, 16736706, -22467150, 10215878, -9097177, 7563911,
3230			11871841, -12505194, -18513325, 8464118},
3231			{-23400612, 8348507, -14585951, -861714, -3950205, -6373419,
3232			14325289, 8628612, 33313881, -8370517},
3233			},
3234			{
3235			{-20186973, -4967935, 22367356, 5271547, -1097117, -4788838,
3236			-24805667, -10236854, -8940735, -5818269},
3237			{-6948785, -1795212, -32625683, -16021179, 32635414, -7374245,
3238			15989197, -12838188, 28358192, -4253904},
3239			{-23561781, -2799059, -32351682, -1661963, -9147719, 10429267,
3240			-16637684, 4072016, -5351664, 5596589},
3241			},
3242			{
3243			{-28236598, -3390048, 12312896, 6213178, 3117142, 16078565,
3244			29266239, 2557221, 1768301, 15373193},
3245			{-7243358, -3246960, -4593467, -7553353, -127927, -912245, -1090902,
3246			-4504991, -24660491, 3442910},
3247			{-30210571, 5124043, 14181784, 8197961, 18964734, -11939093,
3248			22597931, 7176455, -18585478, 13365930},
3249			},
3250			{
3251			{-7877390, -1499958, 8324673, 4690079, 6261860, 890446, 24538107,
3252			-8570186, -9689599, -3031667},
3253			{25008904, -10771599, -4305031, -9638010, 16265036, 15721635,
3254			683793, -11823784, 15723479, -15163481},
3255			{-9660625, 12374379, -27006999, -7026148, -7724114, -12314514,
3256			11879682, 5400171, 519526, -1235876},
3257			},
3258			{
3259			{22258397, -16332233, -7869817, 14613016, -22520255, -2950923,
3260			-20353881, 7315967, 16648397, 7605640},
3261			{-8081308, -8464597, -8223311, 9719710, 19259459, -15348212,
3262			23994942, -5281555, -9468848, 4763278},
3263			{-21699244, 9220969, -15730624, 1084137, -25476107, -2852390,
3264			31088447, -7764523, -11356529, 728112},
3265			},
3266			{
3267			{26047220, -11751471, -6900323, -16521798, 24092068, 9158119,
3268			-4273545, -12555558, -29365436, -5498272},
3269			{17510331, -322857, 5854289, 8403524, 17133918, -3112612, -28111007,
3270			12327945, 10750447, 10014012},
3271			{-10312768, 3936952, 9156313, -8897683, 16498692, -994647,
3272			-27481051, -666732, 3424691, 7540221},
3273			},
3274			{
3275			{30322361, -6964110, 11361005, -4143317, 7433304, 4989748, -7071422,
3276			-16317219, -9244265, 15258046},
3277			{13054562, -2779497, 19155474, 469045, -12482797, 4566042, 5631406,
3278			2711395, 1062915, -5136345},
3279			{-19240248, -11254599, -29509029, -7499965, -5835763, 13005411,
3280			-6066489, 12194497, 32960380, 1459310},
3281			},
3282			},
3283			{
3284			{
3285			{19852034, 7027924, 23669353, 10020366, 8586503, -6657907, 394197,
3286			-6101885, 18638003, -11174937},
3287			{31395534, 15098109, 26581030, 8030562, -16527914, -5007134,
3288			9012486, -7584354, -6643087, -5442636},
3289			{-9192165, -2347377, -1997099, 4529534, 25766844, 607986, -13222,
3290			9677543, -32294889, -6456008},
3291			},
3292			{
3293			{-2444496, -149937, 29348902, 8186665, 1873760, 12489863, -30934579,
3294			-7839692, -7852844, -8138429},
3295			{-15236356, -15433509, 7766470, 746860, 26346930, -10221762,
3296			-27333451, 10754588, -9431476, 5203576},
3297			{31834314, 14135496, -770007, 5159118, 20917671, -16768096,
3298			-7467973, -7337524, 31809243, 7347066},
3299			},
3300			{
3301			{-9606723, -11874240, 20414459, 13033986, 13716524, -11691881,
3302			19797970, -12211255, 15192876, -2087490},
3303			{-12663563, -2181719, 1168162, -3804809, 26747877, -14138091,
3304			10609330, 12694420, 33473243, -13382104},
3305			{33184999, 11180355, 15832085, -11385430, -1633671, 225884,
3306			15089336, -11023903, -6135662, 14480053},
3307			},
3308			{
3309			{31308717, -5619998, 31030840, -1897099, 15674547, -6582883,
3310			5496208, 13685227, 27595050, 8737275},
3311			{-20318852, -15150239, 10933843, -16178022, 8335352, -7546022,
3312			-31008351, -12610604, 26498114, 66511},
3313			{22644454, -8761729, -16671776, 4884562, -3105614, -13559366,
3314			30540766, -4286747, -13327787, -7515095},
3315			},
3316			{
3317			{-28017847, 9834845, 18617207, -2681312, -3401956, -13307506,
3318			8205540, 13585437, -17127465, 15115439},
3319			{23711543, -672915, 31206561, -8362711, 6164647, -9709987,
3320			-33535882, -1426096, 8236921, 16492939},
3321			{-23910559, -13515526, -26299483, -4503841, 25005590, -7687270,
3322			19574902, 10071562, 6708380, -6222424},
3323			},
3324			{
3325			{2101391, -4930054, 19702731, 2367575, -15427167, 1047675, 5301017,
3326			9328700, 29955601, -11678310},
3327			{3096359, 9271816, -21620864, -15521844, -14847996, -7592937,
3328			-25892142, -12635595, -9917575, 6216608},
3329			{-32615849, 338663, -25195611, 2510422, -29213566, -13820213,
3330			24822830, -6146567, -26767480, 7525079},
3331			},
3332			{
3333			{-23066649, -13985623, 16133487, -7896178, -3389565, 778788,
3334			-910336, -2782495, -19386633, 11994101},
3335			{21691500, -13624626, -641331, -14367021, 3285881, -3483596,
3336			-25064666, 9718258, -7477437, 13381418},
3337			{18445390, -4202236, 14979846, 11622458, -1727110, -3582980,
3338			23111648, -6375247, 28535282, 15779576},
3339			},
3340			{
3341			{30098053, 3089662, -9234387, 16662135, -21306940, 11308411,
3342			-14068454, 12021730, 9955285, -16303356},
3343			{9734894, -14576830, -7473633, -9138735, 2060392, 11313496,
3344			-18426029, 9924399, 20194861, 13380996},
3345			{-26378102, -7965207, -22167821, 15789297, -18055342, -6168792,
3346			-1984914, 15707771, 26342023, 10146099},
3347			},
3348			},
3349			{
3350			{
3351			{-26016874, -219943, 21339191, -41388, 19745256, -2878700,
3352			-29637280, 2227040, 21612326, -545728},
3353			{-13077387, 1184228, 23562814, -5970442, -20351244, -6348714,
3354			25764461, 12243797, -20856566, 11649658},
3355			{-10031494, 11262626, 27384172, 2271902, 26947504, -15997771, 39944,
3356			6114064, 33514190, 2333242},
3357			},
3358			{
3359			{-21433588, -12421821, 8119782, 7219913, -21830522, -9016134,
3360			-6679750, -12670638, 24350578, -13450001},
3361			{-4116307, -11271533, -23886186, 4843615, -30088339, 690623,
3362			-31536088, -10406836, 8317860, 12352766},
3363			{18200138, -14475911, -33087759, -2696619, -23702521, -9102511,
3364			-23552096, -2287550, 20712163, 6719373},
3365			},
3366			{
3367			{26656208, 6075253, -7858556, 1886072, -28344043, 4262326, 11117530,
3368			-3763210, 26224235, -3297458},
3369			{-17168938, -14854097, -3395676, -16369877, -19954045, 14050420,
3370			21728352, 9493610, 18620611, -16428628},
3371			{-13323321, 13325349, 11432106, 5964811, 18609221, 6062965,
3372			-5269471, -9725556, -30701573, -16479657},
3373			},
3374			{
3375			{-23860538, -11233159, 26961357, 1640861, -32413112, -16737940,
3376			12248509, -5240639, 13735342, 1934062},
3377			{25089769, 6742589, 17081145, -13406266, 21909293, -16067981,
3378			-15136294, -3765346, -21277997, 5473616},
3379			{31883677, -7961101, 1083432, -11572403, 22828471, 13290673,
3380			-7125085, 12469656, 29111212, -5451014},
3381			},
3382			{
3383			{24244947, -15050407, -26262976, 2791540, -14997599, 16666678,
3384			24367466, 6388839, -10295587, 452383},
3385			{-25640782, -3417841, 5217916, 16224624, 19987036, -4082269,
3386			-24236251, -5915248, 15766062, 8407814},
3387			{-20406999, 13990231, 15495425, 16395525, 5377168, 15166495,
3388			-8917023, -4388953, -8067909, 2276718},
3389			},
3390			{
3391			{30157918, 12924066, -17712050, 9245753, 19895028, 3368142,
3392			-23827587, 5096219, 22740376, -7303417},
3393			{2041139, -14256350, 7783687, 13876377, -25946985, -13352459,
3394			24051124, 13742383, -15637599, 13295222},
3395			{33338237, -8505733, 12532113, 7977527, 9106186, -1715251,
3396			-17720195, -4612972, -4451357, -14669444},
3397			},
3398			{
3399			{-20045281, 5454097, -14346548, 6447146, 28862071, 1883651,
3400			-2469266, -4141880, 7770569, 9620597},
3401			{23208068, 7979712, 33071466, 8149229, 1758231, -10834995, 30945528,
3402			-1694323, -33502340, -14767970},
3403			{1439958, -16270480, -1079989, -793782, 4625402, 10647766, -5043801,
3404			1220118, 30494170, -11440799},
3405			},
3406			{
3407			{-5037580, -13028295, -2970559, -3061767, 15640974, -6701666,
3408			-26739026, 926050, -1684339, -13333647},
3409			{13908495, -3549272, 30919928, -6273825, -21521863, 7989039,
3410			9021034, 9078865, 3353509, 4033511},
3411			{-29663431, -15113610, 32259991, -344482, 24295849, -12912123,
3412			23161163, 8839127, 27485041, 7356032},
3413			},
3414			},
3415			{
3416			{
3417			{9661027, 705443, 11980065, -5370154, -1628543, 14661173, -6346142,
3418			2625015, 28431036, -16771834},
3419			{-23839233, -8311415, -25945511, 7480958, -17681669, -8354183,
3420			-22545972, 14150565, 15970762, 4099461},
3421			{29262576, 16756590, 26350592, -8793563, 8529671, -11208050,
3422			13617293, -9937143, 11465739, 8317062},
3423			},
3424			{
3425			{-25493081, -6962928, 32500200, -9419051, -23038724, -2302222,
3426			14898637, 3848455, 20969334, -5157516},
3427			{-20384450, -14347713, -18336405, 13884722, -33039454, 2842114,
3428			-21610826, -3649888, 11177095, 14989547},
3429			{-24496721, -11716016, 16959896, 2278463, 12066309, 10137771,
3430			13515641, 2581286, -28487508, 9930240},
3431			},
3432			{
3433			{-17751622, -2097826, 16544300, -13009300, -15914807, -14949081,
3434			18345767, -13403753, 16291481, -5314038},
3435			{-33229194, 2553288, 32678213, 9875984, 8534129, 6889387, -9676774,
3436			6957617, 4368891, 9788741},
3437			{16660756, 7281060, -10830758, 12911820, 20108584, -8101676,
3438			-21722536, -8613148, 16250552, -11111103},
3439			},
3440			{
3441			{-19765507, 2390526, -16551031, 14161980, 1905286, 6414907, 4689584,
3442			10604807, -30190403, 4782747},
3443			{-1354539, 14736941, -7367442, -13292886, 7710542, -14155590,
3444			-9981571, 4383045, 22546403, 437323},
3445			{31665577, -12180464, -16186830, 1491339, -18368625, 3294682,
3446			27343084, 2786261, -30633590, -14097016},
3447			},
3448			{
3449			{-14467279, -683715, -33374107, 7448552, 19294360, 14334329,
3450			-19690631, 2355319, -19284671, -6114373},
3451			{15121312, -15796162, 6377020, -6031361, -10798111, -12957845,
3452			18952177, 15496498, -29380133, 11754228},
3453			{-2637277, -13483075, 8488727, -14303896, 12728761, -1622493,
3454			7141596, 11724556, 22761615, -10134141},
3455			},
3456			{
3457			{16918416, 11729663, -18083579, 3022987, -31015732, -13339659,
3458			-28741185, -12227393, 32851222, 11717399},
3459			{11166634, 7338049, -6722523, 4531520, -29468672, -7302055,
3460			31474879, 3483633, -1193175, -4030831},
3461			{-185635, 9921305, 31456609, -13536438, -12013818, 13348923,
3462			33142652, 6546660, -19985279, -3948376},
3463			},
3464			{
3465			{-32460596, 11266712, -11197107, -7899103, 31703694, 3855903,
3466			-8537131, -12833048, -30772034, -15486313},
3467			{-18006477, 12709068, 3991746, -6479188, -21491523, -10550425,
3468			-31135347, -16049879, 10928917, 3011958},
3469			{-6957757, -15594337, 31696059, 334240, 29576716, 14796075,
3470			-30831056, -12805180, 18008031, 10258577},
3471			},
3472			{
3473			{-22448644, 15655569, 7018479, -4410003, -30314266, -1201591,
3474			-1853465, 1367120, 25127874, 6671743},
3475			{29701166, -14373934, -10878120, 9279288, -17568, 13127210,
3476			21382910, 11042292, 25838796, 4642684},
3477			{-20430234, 14955537, -24126347, 8124619, -5369288, -5990470,
3478			30468147, -13900640, 18423289, 4177476},
3479			},
3480			},
3481			};
3482
3483			static uint8_t negative(signed char b) {
3484			uint32_t x = b;
3485			x >>= 31; /* 1: yes; 0: no */
3486			return x;
3487			}
3488
3489			static void table_select(ge_precomp *t, int pos, signed char b) {
3490			ge_precomp minust;
3491			uint8_t bnegative = negative(b);
3492			uint8_t babs = b - ((uint8_t)((-bnegative) & b) << 1);
3493
3494			ge_precomp_0(t);
3495			cmov(t, &k25519Precomp[pos][0], equal(babs, 1));
3496			cmov(t, &k25519Precomp[pos][1], equal(babs, 2));
3497			cmov(t, &k25519Precomp[pos][2], equal(babs, 3));
3498			cmov(t, &k25519Precomp[pos][3], equal(babs, 4));
3499			cmov(t, &k25519Precomp[pos][4], equal(babs, 5));
3500			cmov(t, &k25519Precomp[pos][5], equal(babs, 6));
3501			cmov(t, &k25519Precomp[pos][6], equal(babs, 7));
3502			cmov(t, &k25519Precomp[pos][7], equal(babs, 8));
3503			fe_copy(minust.yplusx, t->yminusx);
3504			fe_copy(minust.yminusx, t->yplusx);
3505			fe_neg(minust.xy2d, t->xy2d);
3506			cmov(t, &minust, bnegative);
3507			}
3508
3509			/* h = a * B
3510			* where a = a[0]+256*a[1]+...+256^31 a[31]
3511			* B is the Ed25519 base point (x,4/5) with x positive.
3512			*
3513			* Preconditions:
3514			* a[31] <= 127 */
3515			void x25519_ge_scalarmult_base(ge_p3 h, const uint8_t a) {
3516			signed char e[64];
3517			signed char carry;
3518			ge_p1p1 r;
3519			ge_p2 s;
3520			ge_precomp t;
3521			int i;
3522
3523			for (i = 0; i < 32; ++i) {
3524			e[2 * i + 0] = (a[i] >> 0) & 15;
3525			e[2 * i + 1] = (a[i] >> 4) & 15;
3526			}
3527			/* each e[i] is between 0 and 15 */
3528			/* e[63] is between 0 and 7 */
3529
3530			carry = 0;
3531			for (i = 0; i < 63; ++i) {
3532			e[i] += carry;
3533			carry = e[i] + 8;
3534			carry >>= 4;
3535			e[i] -= carry << 4;
3536			}
3537			e[63] += carry;
3538			/* each e[i] is between -8 and 8 */
3539
3540			ge_p3_0(h);
3541			for (i = 1; i < 64; i += 2) {
3542			table_select(&t, i / 2, e[i]);
3543			ge_madd(&r, h, &t);
3544			x25519_ge_p1p1_to_p3(h, &r);
3545			}
3546
3547			ge_p3_dbl(&r, h);
3548			x25519_ge_p1p1_to_p2(&s, &r);
3549			ge_p2_dbl(&r, &s);
3550			x25519_ge_p1p1_to_p2(&s, &r);
3551			ge_p2_dbl(&r, &s);
3552			x25519_ge_p1p1_to_p2(&s, &r);
3553			ge_p2_dbl(&r, &s);
3554			x25519_ge_p1p1_to_p3(h, &r);
3555
3556			for (i = 0; i < 64; i += 2) {
3557			table_select(&t, i / 2, e[i]);
3558			ge_madd(&r, h, &t);
3559			x25519_ge_p1p1_to_p3(h, &r);
3560			}
3561			}
3562
3563			#endif
3564
3565			static void cmov_cached(ge_cached t, ge_cached u, uint8_t b) {
3566			fe_cmov(t->YplusX, u->YplusX, b);
3567			fe_cmov(t->YminusX, u->YminusX, b);
3568			fe_cmov(t->Z, u->Z, b);
3569			fe_cmov(t->T2d, u->T2d, b);
3570			}
3571
3572			/* r = scalar * A.
3573			* where a = a[0]+256a[1]+...+256^31 a[31]. /
3574			void x25519_ge_scalarmult(ge_p2 r, const uint8_t scalar, const ge_p3 *A) {
3575			ge_p2 Ai_p2[8];
3576			ge_cached Ai[16];
3577			ge_p1p1 t;
3578
3579			ge_cached_0(&Ai[0]);
3580			x25519_ge_p3_to_cached(&Ai[1], A);
3581			ge_p3_to_p2(&Ai_p2[1], A);
3582
3583			unsigned i;
3584			for (i = 2; i < 16; i += 2) {
3585			ge_p2_dbl(&t, &Ai_p2[i / 2]);
3586			ge_p1p1_to_cached(&Ai[i], &t);
3587			if (i < 8) {
3588			x25519_ge_p1p1_to_p2(&Ai_p2[i], &t);
3589			}
3590			x25519_ge_add(&t, A, &Ai[i]);
3591			ge_p1p1_to_cached(&Ai[i + 1], &t);
3592			if (i < 7) {
3593			x25519_ge_p1p1_to_p2(&Ai_p2[i + 1], &t);
3594			}
3595			}
3596
3597			ge_p2_0(r);
3598			ge_p3 u;
3599
3600			for (i = 0; i < 256; i += 4) {
3601			ge_p2_dbl(&t, r);
3602			x25519_ge_p1p1_to_p2(r, &t);
3603			ge_p2_dbl(&t, r);
3604			x25519_ge_p1p1_to_p2(r, &t);
3605			ge_p2_dbl(&t, r);
3606			x25519_ge_p1p1_to_p2(r, &t);
3607			ge_p2_dbl(&t, r);
3608			x25519_ge_p1p1_to_p3(&u, &t);
3609
3610			uint8_t index = scalar[31 - i/8];
3611			index >>= 4 - (i & 4);
3612			index &= 0xf;
3613
3614			unsigned j;
3615			ge_cached selected;
3616			ge_cached_0(&selected);
3617			for (j = 0; j < 16; j++) {
3618			cmov_cached(&selected, &Ai[j], equal(j, index));
3619			}
3620
3621			x25519_ge_add(&t, &u, &selected);
3622			x25519_ge_p1p1_to_p2(r, &t);
3623			}
3624			}
3625
3626			#ifdef ED25519
3627			static void slide(signed char r, const uint8_t a) {
3628			int i;
3629			int b;
3630			int k;
3631
3632			for (i = 0; i < 256; ++i) {
3633			r[i] = 1 & (a[i >> 3] >> (i & 7));
3634			}
3635
3636			for (i = 0; i < 256; ++i) {
3637			if (r[i]) {
3638			for (b = 1; b <= 6 && i + b < 256; ++b) {
3639			if (r[i + b]) {
3640			if (r[i] + (r[i + b] << b) <= 15) {
3641			r[i] += r[i + b] << b;
3642			r[i + b] = 0;
3643			} else if (r[i] - (r[i + b] << b) >= -15) {
3644			r[i] -= r[i + b] << b;
3645			for (k = i + b; k < 256; ++k) {
3646			if (!r[k]) {
3647			r[k] = 1;
3648			break;
3649			}
3650			r[k] = 0;
3651			}
3652			} else {
3653			break;
3654			}
3655			}
3656			}
3657			}
3658			}
3659			}
3660
3661			static const ge_precomp Bi[8] = {
3662			{
3663			{25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626,
3664			-11754271, -6079156, 2047605},
3665			{-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692,
3666			5043384, 19500929, -15469378},
3667			{-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919,
3668			11864899, -24514362, -4438546},
3669			},
3670			{
3671			{15636291, -9688557, 24204773, -7912398, 616977, -16685262, 27787600,
3672			-14772189, 28944400, -1550024},
3673			{16568933, 4717097, -11556148, -1102322, 15682896, -11807043, 16354577,
3674			-11775962, 7689662, 11199574},
3675			{30464156, -5976125, -11779434, -15670865, 23220365, 15915852, 7512774,
3676			10017326, -17749093, -9920357},
3677			},
3678			{
3679			{10861363, 11473154, 27284546, 1981175, -30064349, 12577861, 32867885,
3680			14515107, -15438304, 10819380},
3681			{4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668,
3682			12483688, -12668491, 5581306},
3683			{19563160, 16186464, -29386857, 4097519, 10237984, -4348115, 28542350,
3684			13850243, -23678021, -15815942},
3685			},
3686			{
3687			{5153746, 9909285, 1723747, -2777874, 30523605, 5516873, 19480852,
3688			5230134, -23952439, -15175766},
3689			{-30269007, -3463509, 7665486, 10083793, 28475525, 1649722, 20654025,
3690			16520125, 30598449, 7715701},
3691			{28881845, 14381568, 9657904, 3680757, -20181635, 7843316, -31400660,
3692			1370708, 29794553, -1409300},
3693			},
3694			{
3695			{-22518993, -6692182, 14201702, -8745502, -23510406, 8844726, 18474211,
3696			-1361450, -13062696, 13821877},
3697			{-6455177, -7839871, 3374702, -4740862, -27098617, -10571707, 31655028,
3698			-7212327, 18853322, -14220951},
3699			{4566830, -12963868, -28974889, -12240689, -7602672, -2830569, -8514358,
3700			-10431137, 2207753, -3209784},
3701			},
3702			{
3703			{-25154831, -4185821, 29681144, 7868801, -6854661, -9423865, -12437364,
3704			-663000, -31111463, -16132436},
3705			{25576264, -2703214, 7349804, -11814844, 16472782, 9300885, 3844789,
3706			15725684, 171356, 6466918},
3707			{23103977, 13316479, 9739013, -16149481, 817875, -15038942, 8965339,
3708			-14088058, -30714912, 16193877},
3709			},
3710			{
3711			{-33521811, 3180713, -2394130, 14003687, -16903474, -16270840, 17238398,
3712			4729455, -18074513, 9256800},
3713			{-25182317, -4174131, 32336398, 5036987, -21236817, 11360617, 22616405,
3714			9761698, -19827198, 630305},
3715			{-13720693, 2639453, -24237460, -7406481, 9494427, -5774029, -6554551,
3716			-15960994, -2449256, -14291300},
3717			},
3718			{
3719			{-3151181, -5046075, 9282714, 6866145, -31907062, -863023, -18940575,
3720			15033784, 25105118, -7894876},
3721			{-24326370, 15950226, -31801215, -14592823, -11662737, -5090925,
3722			1573892, -2625887, 2198790, -15804619},
3723			{-3099351, 10324967, -2241613, 7453183, -5446979, -2735503, -13812022,
3724			-16236442, -32461234, -12290683},
3725			},
3726			};
3727
3728			/* r = a * A + b * B
3729			* where a = a[0]+256*a[1]+...+256^31 a[31].
3730			* and b = b[0]+256*b[1]+...+256^31 b[31].
3731			* B is the Ed25519 base point (x,4/5) with x positive. */
3732			static void
3733			ge_double_scalarmult_vartime(ge_p2 r, const uint8_t a,
3734			const ge_p3 A, const uint8_t b) {
3735			signed char aslide[256];
3736			signed char bslide[256];
3737			ge_cached Ai[8]; /* A,3A,5A,7A,9A,11A,13A,15A */
3738			ge_p1p1 t;
3739			ge_p3 u;
3740			ge_p3 A2;
3741			int i;
3742
3743			slide(aslide, a);
3744			slide(bslide, b);
3745
3746			x25519_ge_p3_to_cached(&Ai[0], A);
3747			ge_p3_dbl(&t, A);
3748			x25519_ge_p1p1_to_p3(&A2, &t);
3749			x25519_ge_add(&t, &A2, &Ai[0]);
3750			x25519_ge_p1p1_to_p3(&u, &t);
3751			x25519_ge_p3_to_cached(&Ai[1], &u);
3752			x25519_ge_add(&t, &A2, &Ai[1]);
3753			x25519_ge_p1p1_to_p3(&u, &t);
3754			x25519_ge_p3_to_cached(&Ai[2], &u);
3755			x25519_ge_add(&t, &A2, &Ai[2]);
3756			x25519_ge_p1p1_to_p3(&u, &t);
3757			x25519_ge_p3_to_cached(&Ai[3], &u);
3758			x25519_ge_add(&t, &A2, &Ai[3]);
3759			x25519_ge_p1p1_to_p3(&u, &t);
3760			x25519_ge_p3_to_cached(&Ai[4], &u);
3761			x25519_ge_add(&t, &A2, &Ai[4]);
3762			x25519_ge_p1p1_to_p3(&u, &t);
3763			x25519_ge_p3_to_cached(&Ai[5], &u);
3764			x25519_ge_add(&t, &A2, &Ai[5]);
3765			x25519_ge_p1p1_to_p3(&u, &t);
3766			x25519_ge_p3_to_cached(&Ai[6], &u);
3767			x25519_ge_add(&t, &A2, &Ai[6]);
3768			x25519_ge_p1p1_to_p3(&u, &t);
3769			x25519_ge_p3_to_cached(&Ai[7], &u);
3770
3771			ge_p2_0(r);
3772
3773			for (i = 255; i >= 0; --i) {
3774			if (aslide[i] \|\| bslide[i]) {
3775			break;
3776			}
3777			}
3778
3779			for (; i >= 0; --i) {
3780			ge_p2_dbl(&t, r);
3781
3782			if (aslide[i] > 0) {
3783			x25519_ge_p1p1_to_p3(&u, &t);
3784			x25519_ge_add(&t, &u, &Ai[aslide[i] / 2]);
3785			} else if (aslide[i] < 0) {
3786			x25519_ge_p1p1_to_p3(&u, &t);
3787			x25519_ge_sub(&t, &u, &Ai[(-aslide[i]) / 2]);
3788			}
3789
3790			if (bslide[i] > 0) {
3791			x25519_ge_p1p1_to_p3(&u, &t);
3792			ge_madd(&t, &u, &Bi[bslide[i] / 2]);
3793			} else if (bslide[i] < 0) {
3794			x25519_ge_p1p1_to_p3(&u, &t);
3795			ge_msub(&t, &u, &Bi[(-bslide[i]) / 2]);
3796			}
3797
3798			x25519_ge_p1p1_to_p2(r, &t);
3799			}
3800			}
3801			#endif
3802
3803			/* The set of scalars is \Z/l
3804			* where l = 2^252 + 27742317777372353535851937790883648493. */
3805
3806			/* Input:
3807			* s[0]+256s[1]+...+256^63s[63] = s
3808			*
3809			* Output:
3810			* s[0]+256s[1]+...+256^31s[31] = s mod l
3811			* where l = 2^252 + 27742317777372353535851937790883648493.
3812			* Overwrites s in place. */
3813			void
3814			x25519_sc_reduce(uint8_t *s) {
3815			int64_t s0 = 2097151 & load_3(s);
3816			int64_t s1 = 2097151 & (load_4(s + 2) >> 5);
3817			int64_t s2 = 2097151 & (load_3(s + 5) >> 2);
3818			int64_t s3 = 2097151 & (load_4(s + 7) >> 7);
3819			int64_t s4 = 2097151 & (load_4(s + 10) >> 4);
3820			int64_t s5 = 2097151 & (load_3(s + 13) >> 1);
3821			int64_t s6 = 2097151 & (load_4(s + 15) >> 6);
3822			int64_t s7 = 2097151 & (load_3(s + 18) >> 3);
3823			int64_t s8 = 2097151 & load_3(s + 21);
3824			int64_t s9 = 2097151 & (load_4(s + 23) >> 5);
3825			int64_t s10 = 2097151 & (load_3(s + 26) >> 2);
3826			int64_t s11 = 2097151 & (load_4(s + 28) >> 7);
3827			int64_t s12 = 2097151 & (load_4(s + 31) >> 4);
3828			int64_t s13 = 2097151 & (load_3(s + 34) >> 1);
3829			int64_t s14 = 2097151 & (load_4(s + 36) >> 6);
3830			int64_t s15 = 2097151 & (load_3(s + 39) >> 3);
3831			int64_t s16 = 2097151 & load_3(s + 42);
3832			int64_t s17 = 2097151 & (load_4(s + 44) >> 5);
3833			int64_t s18 = 2097151 & (load_3(s + 47) >> 2);
3834			int64_t s19 = 2097151 & (load_4(s + 49) >> 7);
3835			int64_t s20 = 2097151 & (load_4(s + 52) >> 4);
3836			int64_t s21 = 2097151 & (load_3(s + 55) >> 1);
3837			int64_t s22 = 2097151 & (load_4(s + 57) >> 6);
3838			int64_t s23 = (load_4(s + 60) >> 3);
3839			int64_t carry0;
3840			int64_t carry1;
3841			int64_t carry2;
3842			int64_t carry3;
3843			int64_t carry4;
3844			int64_t carry5;
3845			int64_t carry6;
3846			int64_t carry7;
3847			int64_t carry8;
3848			int64_t carry9;
3849			int64_t carry10;
3850			int64_t carry11;
3851			int64_t carry12;
3852			int64_t carry13;
3853			int64_t carry14;
3854			int64_t carry15;
3855			int64_t carry16;
3856
3857			s11 += s23 * 666643;
3858			s12 += s23 * 470296;
3859			s13 += s23 * 654183;
3860			s14 -= s23 * 997805;
3861			s15 += s23 * 136657;
3862			s16 -= s23 * 683901;
3863			s23 = 0;
3864
3865			s10 += s22 * 666643;
3866			s11 += s22 * 470296;
3867			s12 += s22 * 654183;
3868			s13 -= s22 * 997805;
3869			s14 += s22 * 136657;
3870			s15 -= s22 * 683901;
3871			s22 = 0;
3872
3873			s9 += s21 * 666643;
3874			s10 += s21 * 470296;
3875			s11 += s21 * 654183;
3876			s12 -= s21 * 997805;
3877			s13 += s21 * 136657;
3878			s14 -= s21 * 683901;
3879			s21 = 0;
3880
3881			s8 += s20 * 666643;
3882			s9 += s20 * 470296;
3883			s10 += s20 * 654183;
3884			s11 -= s20 * 997805;
3885			s12 += s20 * 136657;
3886			s13 -= s20 * 683901;
3887			s20 = 0;
3888
3889			s7 += s19 * 666643;
3890			s8 += s19 * 470296;
3891			s9 += s19 * 654183;
3892			s10 -= s19 * 997805;
3893			s11 += s19 * 136657;
3894			s12 -= s19 * 683901;
3895			s19 = 0;
3896
3897			s6 += s18 * 666643;
3898			s7 += s18 * 470296;
3899			s8 += s18 * 654183;
3900			s9 -= s18 * 997805;
3901			s10 += s18 * 136657;
3902			s11 -= s18 * 683901;
3903			s18 = 0;
3904
3905			carry6 = (s6 + (1 << 20)) >> 21;
3906			s7 += carry6;
3907			s6 -= carry6 << 21;
3908			carry8 = (s8 + (1 << 20)) >> 21;
3909			s9 += carry8;
3910			s8 -= carry8 << 21;
3911			carry10 = (s10 + (1 << 20)) >> 21;
3912			s11 += carry10;
3913			s10 -= carry10 << 21;
3914			carry12 = (s12 + (1 << 20)) >> 21;
3915			s13 += carry12;
3916			s12 -= carry12 << 21;
3917			carry14 = (s14 + (1 << 20)) >> 21;
3918			s15 += carry14;
3919			s14 -= carry14 << 21;
3920			carry16 = (s16 + (1 << 20)) >> 21;
3921			s17 += carry16;
3922			s16 -= carry16 << 21;
3923
3924			carry7 = (s7 + (1 << 20)) >> 21;
3925			s8 += carry7;
3926			s7 -= carry7 << 21;
3927			carry9 = (s9 + (1 << 20)) >> 21;
3928			s10 += carry9;
3929			s9 -= carry9 << 21;
3930			carry11 = (s11 + (1 << 20)) >> 21;
3931			s12 += carry11;
3932			s11 -= carry11 << 21;
3933			carry13 = (s13 + (1 << 20)) >> 21;
3934			s14 += carry13;
3935			s13 -= carry13 << 21;
3936			carry15 = (s15 + (1 << 20)) >> 21;
3937			s16 += carry15;
3938			s15 -= carry15 << 21;
3939
3940			s5 += s17 * 666643;
3941			s6 += s17 * 470296;
3942			s7 += s17 * 654183;
3943			s8 -= s17 * 997805;
3944			s9 += s17 * 136657;
3945			s10 -= s17 * 683901;
3946			s17 = 0;
3947
3948			s4 += s16 * 666643;
3949			s5 += s16 * 470296;
3950			s6 += s16 * 654183;
3951			s7 -= s16 * 997805;
3952			s8 += s16 * 136657;
3953			s9 -= s16 * 683901;
3954			s16 = 0;
3955
3956			s3 += s15 * 666643;
3957			s4 += s15 * 470296;
3958			s5 += s15 * 654183;
3959			s6 -= s15 * 997805;
3960			s7 += s15 * 136657;
3961			s8 -= s15 * 683901;
3962			s15 = 0;
3963
3964			s2 += s14 * 666643;
3965			s3 += s14 * 470296;
3966			s4 += s14 * 654183;
3967			s5 -= s14 * 997805;
3968			s6 += s14 * 136657;
3969			s7 -= s14 * 683901;
3970			s14 = 0;
3971
3972			s1 += s13 * 666643;
3973			s2 += s13 * 470296;
3974			s3 += s13 * 654183;
3975			s4 -= s13 * 997805;
3976			s5 += s13 * 136657;
3977			s6 -= s13 * 683901;
3978			s13 = 0;
3979
3980			s0 += s12 * 666643;
3981			s1 += s12 * 470296;
3982			s2 += s12 * 654183;
3983			s3 -= s12 * 997805;
3984			s4 += s12 * 136657;
3985			s5 -= s12 * 683901;
3986			s12 = 0;
3987
3988			carry0 = (s0 + (1 << 20)) >> 21;
3989			s1 += carry0;
3990			s0 -= carry0 << 21;
3991			carry2 = (s2 + (1 << 20)) >> 21;
3992			s3 += carry2;
3993			s2 -= carry2 << 21;
3994			carry4 = (s4 + (1 << 20)) >> 21;
3995			s5 += carry4;
3996			s4 -= carry4 << 21;
3997			carry6 = (s6 + (1 << 20)) >> 21;
3998			s7 += carry6;
3999			s6 -= carry6 << 21;
4000			carry8 = (s8 + (1 << 20)) >> 21;
4001			s9 += carry8;
4002			s8 -= carry8 << 21;
4003			carry10 = (s10 + (1 << 20)) >> 21;
4004			s11 += carry10;
4005			s10 -= carry10 << 21;
4006
4007			carry1 = (s1 + (1 << 20)) >> 21;
4008			s2 += carry1;
4009			s1 -= carry1 << 21;
4010			carry3 = (s3 + (1 << 20)) >> 21;
4011			s4 += carry3;
4012			s3 -= carry3 << 21;
4013			carry5 = (s5 + (1 << 20)) >> 21;
4014			s6 += carry5;
4015			s5 -= carry5 << 21;
4016			carry7 = (s7 + (1 << 20)) >> 21;
4017			s8 += carry7;
4018			s7 -= carry7 << 21;
4019			carry9 = (s9 + (1 << 20)) >> 21;
4020			s10 += carry9;
4021			s9 -= carry9 << 21;
4022			carry11 = (s11 + (1 << 20)) >> 21;
4023			s12 += carry11;
4024			s11 -= carry11 << 21;
4025
4026			s0 += s12 * 666643;
4027			s1 += s12 * 470296;
4028			s2 += s12 * 654183;
4029			s3 -= s12 * 997805;
4030			s4 += s12 * 136657;
4031			s5 -= s12 * 683901;
4032			s12 = 0;
4033
4034			carry0 = s0 >> 21;
4035			s1 += carry0;
4036			s0 -= carry0 << 21;
4037			carry1 = s1 >> 21;
4038			s2 += carry1;
4039			s1 -= carry1 << 21;
4040			carry2 = s2 >> 21;
4041			s3 += carry2;
4042			s2 -= carry2 << 21;
4043			carry3 = s3 >> 21;
4044			s4 += carry3;
4045			s3 -= carry3 << 21;
4046			carry4 = s4 >> 21;
4047			s5 += carry4;
4048			s4 -= carry4 << 21;
4049			carry5 = s5 >> 21;
4050			s6 += carry5;
4051			s5 -= carry5 << 21;
4052			carry6 = s6 >> 21;
4053			s7 += carry6;
4054			s6 -= carry6 << 21;
4055			carry7 = s7 >> 21;
4056			s8 += carry7;
4057			s7 -= carry7 << 21;
4058			carry8 = s8 >> 21;
4059			s9 += carry8;
4060			s8 -= carry8 << 21;
4061			carry9 = s9 >> 21;
4062			s10 += carry9;
4063			s9 -= carry9 << 21;
4064			carry10 = s10 >> 21;
4065			s11 += carry10;
4066			s10 -= carry10 << 21;
4067			carry11 = s11 >> 21;
4068			s12 += carry11;
4069			s11 -= carry11 << 21;
4070
4071			s0 += s12 * 666643;
4072			s1 += s12 * 470296;
4073			s2 += s12 * 654183;
4074			s3 -= s12 * 997805;
4075			s4 += s12 * 136657;
4076			s5 -= s12 * 683901;
4077			s12 = 0;
4078
4079			carry0 = s0 >> 21;
4080			s1 += carry0;
4081			s0 -= carry0 << 21;
4082			carry1 = s1 >> 21;
4083			s2 += carry1;
4084			s1 -= carry1 << 21;
4085			carry2 = s2 >> 21;
4086			s3 += carry2;
4087			s2 -= carry2 << 21;
4088			carry3 = s3 >> 21;
4089			s4 += carry3;
4090			s3 -= carry3 << 21;
4091			carry4 = s4 >> 21;
4092			s5 += carry4;
4093			s4 -= carry4 << 21;
4094			carry5 = s5 >> 21;
4095			s6 += carry5;
4096			s5 -= carry5 << 21;
4097			carry6 = s6 >> 21;
4098			s7 += carry6;
4099			s6 -= carry6 << 21;
4100			carry7 = s7 >> 21;
4101			s8 += carry7;
4102			s7 -= carry7 << 21;
4103			carry8 = s8 >> 21;
4104			s9 += carry8;
4105			s8 -= carry8 << 21;
4106			carry9 = s9 >> 21;
4107			s10 += carry9;
4108			s9 -= carry9 << 21;
4109			carry10 = s10 >> 21;
4110			s11 += carry10;
4111			s10 -= carry10 << 21;
4112
4113			s[0] = s0 >> 0;
4114			s[1] = s0 >> 8;
4115			s[2] = (s0 >> 16) \| (s1 << 5);
4116			s[3] = s1 >> 3;
4117			s[4] = s1 >> 11;
4118			s[5] = (s1 >> 19) \| (s2 << 2);
4119			s[6] = s2 >> 6;
4120			s[7] = (s2 >> 14) \| (s3 << 7);
4121			s[8] = s3 >> 1;
4122			s[9] = s3 >> 9;
4123			s[10] = (s3 >> 17) \| (s4 << 4);
4124			s[11] = s4 >> 4;
4125			s[12] = s4 >> 12;
4126			s[13] = (s4 >> 20) \| (s5 << 1);
4127			s[14] = s5 >> 7;
4128			s[15] = (s5 >> 15) \| (s6 << 6);
4129			s[16] = s6 >> 2;
4130			s[17] = s6 >> 10;
4131			s[18] = (s6 >> 18) \| (s7 << 3);
4132			s[19] = s7 >> 5;
4133			s[20] = s7 >> 13;
4134			s[21] = s8 >> 0;
4135			s[22] = s8 >> 8;
4136			s[23] = (s8 >> 16) \| (s9 << 5);
4137			s[24] = s9 >> 3;
4138			s[25] = s9 >> 11;
4139			s[26] = (s9 >> 19) \| (s10 << 2);
4140			s[27] = s10 >> 6;
4141			s[28] = (s10 >> 14) \| (s11 << 7);
4142			s[29] = s11 >> 1;
4143			s[30] = s11 >> 9;
4144			s[31] = s11 >> 17;
4145			}
4146
4147			#ifdef ED25519
4148			/* Input:
4149			* a[0]+256a[1]+...+256^31a[31] = a
4150			* b[0]+256b[1]+...+256^31b[31] = b
4151			* c[0]+256c[1]+...+256^31c[31] = c
4152			*
4153			* Output:
4154			* s[0]+256s[1]+...+256^31s[31] = (ab+c) mod l
4155			* where l = 2^252 + 27742317777372353535851937790883648493. */
4156			static void
4157			sc_muladd(uint8_t s, const uint8_t a, const uint8_t *b,
4158			const uint8_t *c)
4159			{
4160			int64_t a0 = 2097151 & load_3(a);
4161			int64_t a1 = 2097151 & (load_4(a + 2) >> 5);
4162			int64_t a2 = 2097151 & (load_3(a + 5) >> 2);
4163			int64_t a3 = 2097151 & (load_4(a + 7) >> 7);
4164			int64_t a4 = 2097151 & (load_4(a + 10) >> 4);
4165			int64_t a5 = 2097151 & (load_3(a + 13) >> 1);
4166			int64_t a6 = 2097151 & (load_4(a + 15) >> 6);
4167			int64_t a7 = 2097151 & (load_3(a + 18) >> 3);
4168			int64_t a8 = 2097151 & load_3(a + 21);
4169			int64_t a9 = 2097151 & (load_4(a + 23) >> 5);
4170			int64_t a10 = 2097151 & (load_3(a + 26) >> 2);
4171			int64_t a11 = (load_4(a + 28) >> 7);
4172			int64_t b0 = 2097151 & load_3(b);
4173			int64_t b1 = 2097151 & (load_4(b + 2) >> 5);
4174			int64_t b2 = 2097151 & (load_3(b + 5) >> 2);
4175			int64_t b3 = 2097151 & (load_4(b + 7) >> 7);
4176			int64_t b4 = 2097151 & (load_4(b + 10) >> 4);
4177			int64_t b5 = 2097151 & (load_3(b + 13) >> 1);
4178			int64_t b6 = 2097151 & (load_4(b + 15) >> 6);
4179			int64_t b7 = 2097151 & (load_3(b + 18) >> 3);
4180			int64_t b8 = 2097151 & load_3(b + 21);
4181			int64_t b9 = 2097151 & (load_4(b + 23) >> 5);
4182			int64_t b10 = 2097151 & (load_3(b + 26) >> 2);
4183			int64_t b11 = (load_4(b + 28) >> 7);
4184			int64_t c0 = 2097151 & load_3(c);
4185			int64_t c1 = 2097151 & (load_4(c + 2) >> 5);
4186			int64_t c2 = 2097151 & (load_3(c + 5) >> 2);
4187			int64_t c3 = 2097151 & (load_4(c + 7) >> 7);
4188			int64_t c4 = 2097151 & (load_4(c + 10) >> 4);
4189			int64_t c5 = 2097151 & (load_3(c + 13) >> 1);
4190			int64_t c6 = 2097151 & (load_4(c + 15) >> 6);
4191			int64_t c7 = 2097151 & (load_3(c + 18) >> 3);
4192			int64_t c8 = 2097151 & load_3(c + 21);
4193			int64_t c9 = 2097151 & (load_4(c + 23) >> 5);
4194			int64_t c10 = 2097151 & (load_3(c + 26) >> 2);
4195			int64_t c11 = (load_4(c + 28) >> 7);
4196			int64_t s0;
4197			int64_t s1;
4198			int64_t s2;
4199			int64_t s3;
4200			int64_t s4;
4201			int64_t s5;
4202			int64_t s6;
4203			int64_t s7;
4204			int64_t s8;
4205			int64_t s9;
4206			int64_t s10;
4207			int64_t s11;
4208			int64_t s12;
4209			int64_t s13;
4210			int64_t s14;
4211			int64_t s15;
4212			int64_t s16;
4213			int64_t s17;
4214			int64_t s18;
4215			int64_t s19;
4216			int64_t s20;
4217			int64_t s21;
4218			int64_t s22;
4219			int64_t s23;
4220			int64_t carry0;
4221			int64_t carry1;
4222			int64_t carry2;
4223			int64_t carry3;
4224			int64_t carry4;
4225			int64_t carry5;
4226			int64_t carry6;
4227			int64_t carry7;
4228			int64_t carry8;
4229			int64_t carry9;
4230			int64_t carry10;
4231			int64_t carry11;
4232			int64_t carry12;
4233			int64_t carry13;
4234			int64_t carry14;
4235			int64_t carry15;
4236			int64_t carry16;
4237			int64_t carry17;
4238			int64_t carry18;
4239			int64_t carry19;
4240			int64_t carry20;
4241			int64_t carry21;
4242			int64_t carry22;
4243
4244			s0 = c0 + a0 * b0;
4245			s1 = c1 + a0 * b1 + a1 * b0;
4246			s2 = c2 + a0 * b2 + a1 * b1 + a2 * b0;
4247			s3 = c3 + a0 * b3 + a1 * b2 + a2 * b1 + a3 * b0;
4248			s4 = c4 + a0 * b4 + a1 * b3 + a2 * b2 + a3 * b1 + a4 * b0;
4249			s5 = c5 + a0 * b5 + a1 * b4 + a2 * b3 + a3 * b2 + a4 * b1 + a5 * b0;
4250			s6 = c6 + a0 * b6 + a1 * b5 + a2 * b4 + a3 * b3 + a4 * b2 + a5 * b1 + a6 * b0;
4251			s7 = c7 + a0 * b7 + a1 * b6 + a2 * b5 + a3 * b4 + a4 * b3 + a5 * b2 +
4252			a6 * b1 + a7 * b0;
4253			s8 = c8 + a0 * b8 + a1 * b7 + a2 * b6 + a3 * b5 + a4 * b4 + a5 * b3 +
4254			a6 * b2 + a7 * b1 + a8 * b0;
4255			s9 = c9 + a0 * b9 + a1 * b8 + a2 * b7 + a3 * b6 + a4 * b5 + a5 * b4 +
4256			a6 * b3 + a7 * b2 + a8 * b1 + a9 * b0;
4257			s10 = c10 + a0 * b10 + a1 * b9 + a2 * b8 + a3 * b7 + a4 * b6 + a5 * b5 +
4258			a6 * b4 + a7 * b3 + a8 * b2 + a9 * b1 + a10 * b0;
4259			s11 = c11 + a0 * b11 + a1 * b10 + a2 * b9 + a3 * b8 + a4 * b7 + a5 * b6 +
4260			a6 * b5 + a7 * b4 + a8 * b3 + a9 * b2 + a10 * b1 + a11 * b0;
4261			s12 = a1 * b11 + a2 * b10 + a3 * b9 + a4 * b8 + a5 * b7 + a6 * b6 + a7 * b5 +
4262			a8 * b4 + a9 * b3 + a10 * b2 + a11 * b1;
4263			s13 = a2 * b11 + a3 * b10 + a4 * b9 + a5 * b8 + a6 * b7 + a7 * b6 + a8 * b5 +
4264			a9 * b4 + a10 * b3 + a11 * b2;
4265			s14 = a3 * b11 + a4 * b10 + a5 * b9 + a6 * b8 + a7 * b7 + a8 * b6 + a9 * b5 +
4266			a10 * b4 + a11 * b3;
4267			s15 = a4 * b11 + a5 * b10 + a6 * b9 + a7 * b8 + a8 * b7 + a9 * b6 + a10 * b5 +
4268			a11 * b4;
4269			s16 = a5 * b11 + a6 * b10 + a7 * b9 + a8 * b8 + a9 * b7 + a10 * b6 + a11 * b5;
4270			s17 = a6 * b11 + a7 * b10 + a8 * b9 + a9 * b8 + a10 * b7 + a11 * b6;
4271			s18 = a7 * b11 + a8 * b10 + a9 * b9 + a10 * b8 + a11 * b7;
4272			s19 = a8 * b11 + a9 * b10 + a10 * b9 + a11 * b8;
4273			s20 = a9 * b11 + a10 * b10 + a11 * b9;
4274			s21 = a10 * b11 + a11 * b10;
4275			s22 = a11 * b11;
4276			s23 = 0;
4277
4278			carry0 = (s0 + (1 << 20)) >> 21;
4279			s1 += carry0;
4280			s0 -= carry0 << 21;
4281			carry2 = (s2 + (1 << 20)) >> 21;
4282			s3 += carry2;
4283			s2 -= carry2 << 21;
4284			carry4 = (s4 + (1 << 20)) >> 21;
4285			s5 += carry4;
4286			s4 -= carry4 << 21;
4287			carry6 = (s6 + (1 << 20)) >> 21;
4288			s7 += carry6;
4289			s6 -= carry6 << 21;
4290			carry8 = (s8 + (1 << 20)) >> 21;
4291			s9 += carry8;
4292			s8 -= carry8 << 21;
4293			carry10 = (s10 + (1 << 20)) >> 21;
4294			s11 += carry10;
4295			s10 -= carry10 << 21;
4296			carry12 = (s12 + (1 << 20)) >> 21;
4297			s13 += carry12;
4298			s12 -= carry12 << 21;
4299			carry14 = (s14 + (1 << 20)) >> 21;
4300			s15 += carry14;
4301			s14 -= carry14 << 21;
4302			carry16 = (s16 + (1 << 20)) >> 21;
4303			s17 += carry16;
4304			s16 -= carry16 << 21;
4305			carry18 = (s18 + (1 << 20)) >> 21;
4306			s19 += carry18;
4307			s18 -= carry18 << 21;
4308			carry20 = (s20 + (1 << 20)) >> 21;
4309			s21 += carry20;
4310			s20 -= carry20 << 21;
4311			carry22 = (s22 + (1 << 20)) >> 21;
4312			s23 += carry22;
4313			s22 -= carry22 << 21;
4314
4315			carry1 = (s1 + (1 << 20)) >> 21;
4316			s2 += carry1;
4317			s1 -= carry1 << 21;
4318			carry3 = (s3 + (1 << 20)) >> 21;
4319			s4 += carry3;
4320			s3 -= carry3 << 21;
4321			carry5 = (s5 + (1 << 20)) >> 21;
4322			s6 += carry5;
4323			s5 -= carry5 << 21;
4324			carry7 = (s7 + (1 << 20)) >> 21;
4325			s8 += carry7;
4326			s7 -= carry7 << 21;
4327			carry9 = (s9 + (1 << 20)) >> 21;
4328			s10 += carry9;
4329			s9 -= carry9 << 21;
4330			carry11 = (s11 + (1 << 20)) >> 21;
4331			s12 += carry11;
4332			s11 -= carry11 << 21;
4333			carry13 = (s13 + (1 << 20)) >> 21;
4334			s14 += carry13;
4335			s13 -= carry13 << 21;
4336			carry15 = (s15 + (1 << 20)) >> 21;
4337			s16 += carry15;
4338			s15 -= carry15 << 21;
4339			carry17 = (s17 + (1 << 20)) >> 21;
4340			s18 += carry17;
4341			s17 -= carry17 << 21;
4342			carry19 = (s19 + (1 << 20)) >> 21;
4343			s20 += carry19;
4344			s19 -= carry19 << 21;
4345			carry21 = (s21 + (1 << 20)) >> 21;
4346			s22 += carry21;
4347			s21 -= carry21 << 21;
4348
4349			s11 += s23 * 666643;
4350			s12 += s23 * 470296;
4351			s13 += s23 * 654183;
4352			s14 -= s23 * 997805;
4353			s15 += s23 * 136657;
4354			s16 -= s23 * 683901;
4355			s23 = 0;
4356
4357			s10 += s22 * 666643;
4358			s11 += s22 * 470296;
4359			s12 += s22 * 654183;
4360			s13 -= s22 * 997805;
4361			s14 += s22 * 136657;
4362			s15 -= s22 * 683901;
4363			s22 = 0;
4364
4365			s9 += s21 * 666643;
4366			s10 += s21 * 470296;
4367			s11 += s21 * 654183;
4368			s12 -= s21 * 997805;
4369			s13 += s21 * 136657;
4370			s14 -= s21 * 683901;
4371			s21 = 0;
4372
4373			s8 += s20 * 666643;
4374			s9 += s20 * 470296;
4375			s10 += s20 * 654183;
4376			s11 -= s20 * 997805;
4377			s12 += s20 * 136657;
4378			s13 -= s20 * 683901;
4379			s20 = 0;
4380
4381			s7 += s19 * 666643;
4382			s8 += s19 * 470296;
4383			s9 += s19 * 654183;
4384			s10 -= s19 * 997805;
4385			s11 += s19 * 136657;
4386			s12 -= s19 * 683901;
4387			s19 = 0;
4388
4389			s6 += s18 * 666643;
4390			s7 += s18 * 470296;
4391			s8 += s18 * 654183;
4392			s9 -= s18 * 997805;
4393			s10 += s18 * 136657;
4394			s11 -= s18 * 683901;
4395			s18 = 0;
4396
4397			carry6 = (s6 + (1 << 20)) >> 21;
4398			s7 += carry6;
4399			s6 -= carry6 << 21;
4400			carry8 = (s8 + (1 << 20)) >> 21;
4401			s9 += carry8;
4402			s8 -= carry8 << 21;
4403			carry10 = (s10 + (1 << 20)) >> 21;
4404			s11 += carry10;
4405			s10 -= carry10 << 21;
4406			carry12 = (s12 + (1 << 20)) >> 21;
4407			s13 += carry12;
4408			s12 -= carry12 << 21;
4409			carry14 = (s14 + (1 << 20)) >> 21;
4410			s15 += carry14;
4411			s14 -= carry14 << 21;
4412			carry16 = (s16 + (1 << 20)) >> 21;
4413			s17 += carry16;
4414			s16 -= carry16 << 21;
4415
4416			carry7 = (s7 + (1 << 20)) >> 21;
4417			s8 += carry7;
4418			s7 -= carry7 << 21;
4419			carry9 = (s9 + (1 << 20)) >> 21;
4420			s10 += carry9;
4421			s9 -= carry9 << 21;
4422			carry11 = (s11 + (1 << 20)) >> 21;
4423			s12 += carry11;
4424			s11 -= carry11 << 21;
4425			carry13 = (s13 + (1 << 20)) >> 21;
4426			s14 += carry13;
4427			s13 -= carry13 << 21;
4428			carry15 = (s15 + (1 << 20)) >> 21;
4429			s16 += carry15;
4430			s15 -= carry15 << 21;
4431
4432			s5 += s17 * 666643;
4433			s6 += s17 * 470296;
4434			s7 += s17 * 654183;
4435			s8 -= s17 * 997805;
4436			s9 += s17 * 136657;
4437			s10 -= s17 * 683901;
4438			s17 = 0;
4439
4440			s4 += s16 * 666643;
4441			s5 += s16 * 470296;
4442			s6 += s16 * 654183;
4443			s7 -= s16 * 997805;
4444			s8 += s16 * 136657;
4445			s9 -= s16 * 683901;
4446			s16 = 0;
4447
4448			s3 += s15 * 666643;
4449			s4 += s15 * 470296;
4450			s5 += s15 * 654183;
4451			s6 -= s15 * 997805;
4452			s7 += s15 * 136657;
4453			s8 -= s15 * 683901;
4454			s15 = 0;
4455
4456			s2 += s14 * 666643;
4457			s3 += s14 * 470296;
4458			s4 += s14 * 654183;
4459			s5 -= s14 * 997805;
4460			s6 += s14 * 136657;
4461			s7 -= s14 * 683901;
4462			s14 = 0;
4463
4464			s1 += s13 * 666643;
4465			s2 += s13 * 470296;
4466			s3 += s13 * 654183;
4467			s4 -= s13 * 997805;
4468			s5 += s13 * 136657;
4469			s6 -= s13 * 683901;
4470			s13 = 0;
4471
4472			s0 += s12 * 666643;
4473			s1 += s12 * 470296;
4474			s2 += s12 * 654183;
4475			s3 -= s12 * 997805;
4476			s4 += s12 * 136657;
4477			s5 -= s12 * 683901;
4478			s12 = 0;
4479
4480			carry0 = (s0 + (1 << 20)) >> 21;
4481			s1 += carry0;
4482			s0 -= carry0 << 21;
4483			carry2 = (s2 + (1 << 20)) >> 21;
4484			s3 += carry2;
4485			s2 -= carry2 << 21;
4486			carry4 = (s4 + (1 << 20)) >> 21;
4487			s5 += carry4;
4488			s4 -= carry4 << 21;
4489			carry6 = (s6 + (1 << 20)) >> 21;
4490			s7 += carry6;
4491			s6 -= carry6 << 21;
4492			carry8 = (s8 + (1 << 20)) >> 21;
4493			s9 += carry8;
4494			s8 -= carry8 << 21;
4495			carry10 = (s10 + (1 << 20)) >> 21;
4496			s11 += carry10;
4497			s10 -= carry10 << 21;
4498
4499			carry1 = (s1 + (1 << 20)) >> 21;
4500			s2 += carry1;
4501			s1 -= carry1 << 21;
4502			carry3 = (s3 + (1 << 20)) >> 21;
4503			s4 += carry3;
4504			s3 -= carry3 << 21;
4505			carry5 = (s5 + (1 << 20)) >> 21;
4506			s6 += carry5;
4507			s5 -= carry5 << 21;
4508			carry7 = (s7 + (1 << 20)) >> 21;
4509			s8 += carry7;
4510			s7 -= carry7 << 21;
4511			carry9 = (s9 + (1 << 20)) >> 21;
4512			s10 += carry9;
4513			s9 -= carry9 << 21;
4514			carry11 = (s11 + (1 << 20)) >> 21;
4515			s12 += carry11;
4516			s11 -= carry11 << 21;
4517
4518			s0 += s12 * 666643;
4519			s1 += s12 * 470296;
4520			s2 += s12 * 654183;
4521			s3 -= s12 * 997805;
4522			s4 += s12 * 136657;
4523			s5 -= s12 * 683901;
4524			s12 = 0;
4525
4526			carry0 = s0 >> 21;
4527			s1 += carry0;
4528			s0 -= carry0 << 21;
4529			carry1 = s1 >> 21;
4530			s2 += carry1;
4531			s1 -= carry1 << 21;
4532			carry2 = s2 >> 21;
4533			s3 += carry2;
4534			s2 -= carry2 << 21;
4535			carry3 = s3 >> 21;
4536			s4 += carry3;
4537			s3 -= carry3 << 21;
4538			carry4 = s4 >> 21;
4539			s5 += carry4;
4540			s4 -= carry4 << 21;
4541			carry5 = s5 >> 21;
4542			s6 += carry5;
4543			s5 -= carry5 << 21;
4544			carry6 = s6 >> 21;
4545			s7 += carry6;
4546			s6 -= carry6 << 21;
4547			carry7 = s7 >> 21;
4548			s8 += carry7;
4549			s7 -= carry7 << 21;
4550			carry8 = s8 >> 21;
4551			s9 += carry8;
4552			s8 -= carry8 << 21;
4553			carry9 = s9 >> 21;
4554			s10 += carry9;
4555			s9 -= carry9 << 21;
4556			carry10 = s10 >> 21;
4557			s11 += carry10;
4558			s10 -= carry10 << 21;
4559			carry11 = s11 >> 21;
4560			s12 += carry11;
4561			s11 -= carry11 << 21;
4562
4563			s0 += s12 * 666643;
4564			s1 += s12 * 470296;
4565			s2 += s12 * 654183;
4566			s3 -= s12 * 997805;
4567			s4 += s12 * 136657;
4568			s5 -= s12 * 683901;
4569			s12 = 0;
4570
4571			carry0 = s0 >> 21;
4572			s1 += carry0;
4573			s0 -= carry0 << 21;
4574			carry1 = s1 >> 21;
4575			s2 += carry1;
4576			s1 -= carry1 << 21;
4577			carry2 = s2 >> 21;
4578			s3 += carry2;
4579			s2 -= carry2 << 21;
4580			carry3 = s3 >> 21;
4581			s4 += carry3;
4582			s3 -= carry3 << 21;
4583			carry4 = s4 >> 21;
4584			s5 += carry4;
4585			s4 -= carry4 << 21;
4586			carry5 = s5 >> 21;
4587			s6 += carry5;
4588			s5 -= carry5 << 21;
4589			carry6 = s6 >> 21;
4590			s7 += carry6;
4591			s6 -= carry6 << 21;
4592			carry7 = s7 >> 21;
4593			s8 += carry7;
4594			s7 -= carry7 << 21;
4595			carry8 = s8 >> 21;
4596			s9 += carry8;
4597			s8 -= carry8 << 21;
4598			carry9 = s9 >> 21;
4599			s10 += carry9;
4600			s9 -= carry9 << 21;
4601			carry10 = s10 >> 21;
4602			s11 += carry10;
4603			s10 -= carry10 << 21;
4604
4605			s[0] = s0 >> 0;
4606			s[1] = s0 >> 8;
4607			s[2] = (s0 >> 16) \| (s1 << 5);
4608			s[3] = s1 >> 3;
4609			s[4] = s1 >> 11;
4610			s[5] = (s1 >> 19) \| (s2 << 2);
4611			s[6] = s2 >> 6;
4612			s[7] = (s2 >> 14) \| (s3 << 7);
4613			s[8] = s3 >> 1;
4614			s[9] = s3 >> 9;
4615			s[10] = (s3 >> 17) \| (s4 << 4);
4616			s[11] = s4 >> 4;
4617			s[12] = s4 >> 12;
4618			s[13] = (s4 >> 20) \| (s5 << 1);
4619			s[14] = s5 >> 7;
4620			s[15] = (s5 >> 15) \| (s6 << 6);
4621			s[16] = s6 >> 2;
4622			s[17] = s6 >> 10;
4623			s[18] = (s6 >> 18) \| (s7 << 3);
4624			s[19] = s7 >> 5;
4625			s[20] = s7 >> 13;
4626			s[21] = s8 >> 0;
4627			s[22] = s8 >> 8;
4628			s[23] = (s8 >> 16) \| (s9 << 5);
4629			s[24] = s9 >> 3;
4630			s[25] = s9 >> 11;
4631			s[26] = (s9 >> 19) \| (s10 << 2);
4632			s[27] = s10 >> 6;
4633			s[28] = (s10 >> 14) \| (s11 << 7);
4634			s[29] = s11 >> 1;
4635			s[30] = s11 >> 9;
4636			s[31] = s11 >> 17;
4637			}
4638			#endif
4639
4640			#ifdef ED25519
4641			void ED25519_keypair(uint8_t out_public_key[32], uint8_t out_private_key[64]) {
4642			uint8_t seed[32];
4643			arc4random_buf(seed, 32);
4644
4645			uint8_t az[SHA512_DIGEST_LENGTH];
4646			SHA512(seed, 32, az);
4647
4648			az[0] &= 248;
4649			az[31] &= 63;
4650			az[31] \|= 64;
4651
4652			ge_p3 A;
4653			x25519_ge_scalarmult_base(&A, az);
4654			ge_p3_tobytes(out_public_key, &A);
4655
4656			memcpy(out_private_key, seed, 32);
4657			memmove(out_private_key + 32, out_public_key, 32);
4658			}
4659
4660			int ED25519_sign(uint8_t out_sig, const uint8_t message, size_t message_len,
4661			const uint8_t private_key[64]) {
4662			uint8_t az[SHA512_DIGEST_LENGTH];
4663			SHA512(private_key, 32, az);
4664
4665			az[0] &= 248;
4666			az[31] &= 63;
4667			az[31] \|= 64;
4668
4669			SHA512_CTX hash_ctx;
4670			SHA512_Init(&hash_ctx);
4671			SHA512_Update(&hash_ctx, az + 32, 32);
4672			SHA512_Update(&hash_ctx, message, message_len);
4673			uint8_t nonce[SHA512_DIGEST_LENGTH];
4674			SHA512_Final(nonce, &hash_ctx);
4675
4676			x25519_sc_reduce(nonce);
4677			ge_p3 R;
4678			x25519_ge_scalarmult_base(&R, nonce);
4679			ge_p3_tobytes(out_sig, &R);
4680
4681			SHA512_Init(&hash_ctx);
4682			SHA512_Update(&hash_ctx, out_sig, 32);
4683			SHA512_Update(&hash_ctx, private_key + 32, 32);
4684			SHA512_Update(&hash_ctx, message, message_len);
4685			uint8_t hram[SHA512_DIGEST_LENGTH];
4686			SHA512_Final(hram, &hash_ctx);
4687
4688			x25519_sc_reduce(hram);
4689			sc_muladd(out_sig + 32, hram, az, nonce);
4690
4691			return 1;
4692			}
4693
4694			int ED25519_verify(const uint8_t *message, size_t message_len,
4695			const uint8_t signature[64], const uint8_t public_key[32]) {
4696			ge_p3 A;
4697			if ((signature[63] & 224) != 0 \|\|
4698			x25519_ge_frombytes_vartime(&A, public_key) != 0) {
4699			return 0;
4700			}
4701
4702			fe_neg(A.X, A.X);
4703			fe_neg(A.T, A.T);
4704
4705			uint8_t pkcopy[32];
4706			memcpy(pkcopy, public_key, 32);
4707			uint8_t rcopy[32];
4708			memcpy(rcopy, signature, 32);
4709			uint8_t scopy[32];
4710			memcpy(scopy, signature + 32, 32);
4711
4712			SHA512_CTX hash_ctx;
4713			SHA512_Init(&hash_ctx);
4714			SHA512_Update(&hash_ctx, signature, 32);
4715			SHA512_Update(&hash_ctx, public_key, 32);
4716			SHA512_Update(&hash_ctx, message, message_len);
4717			uint8_t h[SHA512_DIGEST_LENGTH];
4718			SHA512_Final(h, &hash_ctx);
4719
4720			x25519_sc_reduce(h);
4721
4722			ge_p2 R;
4723			ge_double_scalarmult_vartime(&R, h, &A, scopy);
4724
4725			uint8_t rcheck[32];
4726			x25519_ge_tobytes(rcheck, &R);
4727
4728			return timingsafe_memcmp(rcheck, rcopy, sizeof(rcheck)) == 0;
4729			}
4730			#endif
4731
4732			/* Replace (f,g) with (g,f) if b == 1;
4733			* replace (f,g) with (f,g) if b == 0.
4734			*
4735			* Preconditions: b in {0,1}. */
4736			static void fe_cswap(fe f, fe g, unsigned int b) {
4737		6244352	b = 0-b;
4738			unsigned i;
4739	✓✓	68687872	for (i = 0; i < 10; i++) {
4740		31221760	int32_t x = f[i] ^ g[i];
4741		31221760	x &= b;
4742		31221760	f[i] ^= x;
4743		31221760	g[i] ^= x;
4744			}
4745		3122176	}
4746
4747			/* h = f * 121666
4748			* Can overlap h with f.
4749			*
4750			* Preconditions:
4751			* \|f\| bounded by 1.12^26,1.12^25,1.12^26,1.12^25,etc.
4752			*
4753			* Postconditions:
4754			* \|h\| bounded by 1.12^25,1.12^24,1.12^25,1.12^24,etc. */
4755			static void fe_mul121666(fe h, fe f) {
4756		3109980	int32_t f0 = f[0];
4757		1554990	int32_t f1 = f[1];
4758		1554990	int32_t f2 = f[2];
4759		1554990	int32_t f3 = f[3];
4760		1554990	int32_t f4 = f[4];
4761		1554990	int32_t f5 = f[5];
4762		1554990	int32_t f6 = f[6];
4763		1554990	int32_t f7 = f[7];
4764		1554990	int32_t f8 = f[8];
4765		1554990	int32_t f9 = f[9];
4766		1554990	int64_t h0 = f0 * (int64_t) 121666;
4767		1554990	int64_t h1 = f1 * (int64_t) 121666;
4768		1554990	int64_t h2 = f2 * (int64_t) 121666;
4769		1554990	int64_t h3 = f3 * (int64_t) 121666;
4770		1554990	int64_t h4 = f4 * (int64_t) 121666;
4771		1554990	int64_t h5 = f5 * (int64_t) 121666;
4772		1554990	int64_t h6 = f6 * (int64_t) 121666;
4773		1554990	int64_t h7 = f7 * (int64_t) 121666;
4774		1554990	int64_t h8 = f8 * (int64_t) 121666;
4775		1554990	int64_t h9 = f9 * (int64_t) 121666;
4776			int64_t carry0;
4777			int64_t carry1;
4778			int64_t carry2;
4779			int64_t carry3;
4780			int64_t carry4;
4781			int64_t carry5;
4782			int64_t carry6;
4783			int64_t carry7;
4784			int64_t carry8;
4785			int64_t carry9;
4786
4787		1554990	carry9 = h9 + (1 << 24); h0 += (carry9 >> 25) * 19; h9 -= carry9 & kTop39Bits;
4788		1554990	carry1 = h1 + (1 << 24); h2 += carry1 >> 25; h1 -= carry1 & kTop39Bits;
4789		1554990	carry3 = h3 + (1 << 24); h4 += carry3 >> 25; h3 -= carry3 & kTop39Bits;
4790		1554990	carry5 = h5 + (1 << 24); h6 += carry5 >> 25; h5 -= carry5 & kTop39Bits;
4791		1554990	carry7 = h7 + (1 << 24); h8 += carry7 >> 25; h7 -= carry7 & kTop39Bits;
4792
4793		1554990	carry0 = h0 + (1 << 25); h1 += carry0 >> 26; h0 -= carry0 & kTop38Bits;
4794		1554990	carry2 = h2 + (1 << 25); h3 += carry2 >> 26; h2 -= carry2 & kTop38Bits;
4795		1554990	carry4 = h4 + (1 << 25); h5 += carry4 >> 26; h4 -= carry4 & kTop38Bits;
4796		1554990	carry6 = h6 + (1 << 25); h7 += carry6 >> 26; h6 -= carry6 & kTop38Bits;
4797		1554990	carry8 = h8 + (1 << 25); h9 += carry8 >> 26; h8 -= carry8 & kTop38Bits;
4798
4799		1554990	h[0] = h0;
4800		1554990	h[1] = h1;
4801		1554990	h[2] = h2;
4802		1554990	h[3] = h3;
4803		1554990	h[4] = h4;
4804		1554990	h[5] = h5;
4805		1554990	h[6] = h6;
4806		1554990	h[7] = h7;
4807		1554990	h[8] = h8;
4808		1554990	h[9] = h9;
4809		1554990	}
4810
4811			void
4812			x25519_scalar_mult_generic(uint8_t out[32], const uint8_t scalar[32],
4813			const uint8_t point[32]) {
4814		12196	fe x1, x2, z2, x3, z3, tmp0, tmp1;
4815
4816		6098	uint8_t e[32];
4817		6098	memcpy(e, scalar, 32);
4818		6098	e[0] &= 248;
4819		6098	e[31] &= 127;
4820		6098	e[31] \|= 64;
4821		6098	fe_frombytes(x1, point);
4822		6098	fe_1(x2);
4823		6098	fe_0(z2);
4824		6098	fe_copy(x3, x1);
4825		6098	fe_1(z3);
4826
4827			unsigned swap = 0;
4828			int pos;
4829	✓✓	3122176	for (pos = 254; pos >= 0; --pos) {
4830		1554990	unsigned b = 1 & (e[pos / 8] >> (pos & 7));
4831		1554990	swap ^= b;
4832		1554990	fe_cswap(x2, x3, swap);
4833		1554990	fe_cswap(z2, z3, swap);
4834			swap = b;
4835		1554990	fe_sub(tmp0, x3, z3);
4836		1554990	fe_sub(tmp1, x2, z2);
4837		1554990	fe_add(x2, x2, z2);
4838		1554990	fe_add(z2, x3, z3);
4839		1554990	fe_mul(z3, tmp0, x2);
4840		1554990	fe_mul(z2, z2, tmp1);
4841		1554990	fe_sq(tmp0, tmp1);
4842		1554990	fe_sq(tmp1, x2);
4843		1554990	fe_add(x3, z3, z2);
4844		1554990	fe_sub(z2, z3, z2);
4845		1554990	fe_mul(x2, tmp1, tmp0);
4846		1554990	fe_sub(tmp1, tmp1, tmp0);
4847		1554990	fe_sq(z2, z2);
4848		1554990	fe_mul121666(z3, tmp1);
4849		1554990	fe_sq(x3, x3);
4850		1554990	fe_add(tmp0, tmp0, z3);
4851		1554990	fe_mul(z3, x1, z2);
4852		1554990	fe_mul(z2, tmp1, tmp0);
4853			}
4854		6098	fe_cswap(x2, x3, swap);
4855		6098	fe_cswap(z2, z3, swap);
4856
4857		6098	fe_invert(z2, z2);
4858		6098	fe_mul(x2, x2, z2);
4859		6098	fe_tobytes(out, x2);
4860		6098	}
4861
4862			#ifdef unused
4863			void
4864			x25519_public_from_private_generic(uint8_t out_public_value[32],
4865			const uint8_t private_key[32])
4866			{
4867			uint8_t e[32];
4868
4869			memcpy(e, private_key, 32);
4870			e[0] &= 248;
4871			e[31] &= 127;
4872			e[31] \|= 64;
4873
4874			ge_p3 A;
4875			x25519_ge_scalarmult_base(&A, e);
4876
4877			/* We only need the u-coordinate of the curve25519 point. The map is
4878			* u=(y+1)/(1-y). Since y=Y/Z, this gives u=(Z+Y)/(Z-Y). */
4879			fe zplusy, zminusy, zminusy_inv;
4880			fe_add(zplusy, A.Z, A.Y);
4881			fe_sub(zminusy, A.Z, A.Y);
4882			fe_invert(zminusy_inv, zminusy);
4883			fe_mul(zplusy, zplusy, zminusy_inv);
4884			fe_tobytes(out_public_value, zplusy);
4885			}
4886			#endif
4887
4888			void
4889			x25519_public_from_private(uint8_t out_public_value[32],
4890			const uint8_t private_key[32])
4891			{
4892			static const uint8_t kMongomeryBasePoint[32] = {9};
4893
4894		80	x25519_scalar_mult(out_public_value, private_key, kMongomeryBasePoint);
4895		40	}
4896
4897			void
4898			X25519_keypair(uint8_t out_public_value[X25519_KEY_LENGTH],
4899			uint8_t out_private_key[X25519_KEY_LENGTH])
4900			{
4901			/* All X25519 implementations should decode scalars correctly (see
4902			* https://tools.ietf.org/html/rfc7748#section-5). However, if an
4903			* implementation doesn't then it might interoperate with random keys a
4904			* fraction of the time because they'll, randomly, happen to be correctly
4905			* formed.
4906			*
4907			* Thus we do the opposite of the masking here to make sure that our private
4908			* keys are never correctly masked and so, hopefully, any incorrect
4909			* implementations are deterministically broken.
4910			*
4911			* This does not affect security because, although we're throwing away
4912			* entropy, a valid implementation of scalarmult should throw away the exact
4913			* same bits anyway. */
4914		80	arc4random_buf(out_private_key, 32);
4915
4916		40	out_private_key[0] \|= 7;
4917		40	out_private_key[31] &= 63;
4918		40	out_private_key[31] \|= 128;
4919
4920		40	x25519_public_from_private(out_public_value, out_private_key);
4921		40	}
4922
4923			int
4924			X25519(uint8_t out_shared_key[X25519_KEY_LENGTH],
4925			const uint8_t private_key[X25519_KEY_LENGTH],
4926			const uint8_t peer_public_value[X25519_KEY_LENGTH])
4927			{
4928			static const uint8_t kZeros[32] = {0};
4929
4930		12116	x25519_scalar_mult(out_shared_key, private_key, peer_public_value);
4931
4932			/* The all-zero output results when the input is a point of small order. */
4933		6058	return timingsafe_memcmp(kZeros, out_shared_key, 32) != 0;
4934			}


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