GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/openssl/genpkey.c Lines: 120 180 66.7 %
Date: 2017-11-13 Branches: 74 126 58.7 %

Line Branch Exec Source
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/* $OpenBSD: genpkey.c,v 1.9 2017/01/20 08:57:12 deraadt Exp $ */
2
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3
 * project 2006
4
 */
5
/* ====================================================================
6
 * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
7
 *
8
 * Redistribution and use in source and binary forms, with or without
9
 * modification, are permitted provided that the following conditions
10
 * are met:
11
 *
12
 * 1. Redistributions of source code must retain the above copyright
13
 *    notice, this list of conditions and the following disclaimer.
14
 *
15
 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in
17
 *    the documentation and/or other materials provided with the
18
 *    distribution.
19
 *
20
 * 3. All advertising materials mentioning features or use of this
21
 *    software must display the following acknowledgment:
22
 *    "This product includes software developed by the OpenSSL Project
23
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24
 *
25
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26
 *    endorse or promote products derived from this software without
27
 *    prior written permission. For written permission, please contact
28
 *    licensing@OpenSSL.org.
29
 *
30
 * 5. Products derived from this software may not be called "OpenSSL"
31
 *    nor may "OpenSSL" appear in their names without prior written
32
 *    permission of the OpenSSL Project.
33
 *
34
 * 6. Redistributions of any form whatsoever must retain the following
35
 *    acknowledgment:
36
 *    "This product includes software developed by the OpenSSL Project
37
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38
 *
39
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
43
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50
 * OF THE POSSIBILITY OF SUCH DAMAGE.
51
 * ====================================================================
52
 *
53
 * This product includes cryptographic software written by Eric Young
54
 * (eay@cryptsoft.com).  This product includes software written by Tim
55
 * Hudson (tjh@cryptsoft.com).
56
 *
57
 */
58
59
#include <stdio.h>
60
#include <string.h>
61
62
#include "apps.h"
63
64
#include <openssl/err.h>
65
#include <openssl/evp.h>
66
#include <openssl/pem.h>
67
68
static int
69
init_keygen_file(BIO * err, EVP_PKEY_CTX ** pctx, const char *file);
70
static int genpkey_cb(EVP_PKEY_CTX * ctx);
71
72
int
73
genpkey_main(int argc, char **argv)
74
{
75
	char **args, *outfile = NULL;
76
	char *passarg = NULL;
77
	BIO *in = NULL, *out = NULL;
78
	const EVP_CIPHER *cipher = NULL;
79
	int outformat;
80
	int text = 0;
81
64
	EVP_PKEY *pkey = NULL;
82
32
	EVP_PKEY_CTX *ctx = NULL;
83
32
	char *pass = NULL;
84
	int badarg = 0;
85
	int ret = 1, rv;
86
87
	int do_param = 0;
88
89
32
	if (single_execution) {
90
32
		if (pledge("stdio cpath wpath rpath tty flock", NULL) == -1) {
91
			perror("pledge");
92
			exit(1);
93
		}
94
	}
95
96
	outformat = FORMAT_PEM;
97
98
32
	args = argv + 1;
99

460
	while (!badarg && *args && *args[0] == '-') {
100
92
		if (!strcmp(*args, "-outform")) {
101
			if (args[1]) {
102
				args++;
103
				outformat = str2fmt(*args);
104
			} else
105
				badarg = 1;
106
92
		} else if (!strcmp(*args, "-pass")) {
107
			if (!args[1])
108
				goto bad;
109
			passarg = *(++args);
110
		}
111
92
		else if (!strcmp(*args, "-paramfile")) {
112
12
			if (!args[1])
113
				goto bad;
114
12
			args++;
115
12
			if (do_param == 1)
116
				goto bad;
117
12
			if (!init_keygen_file(bio_err, &ctx, *args))
118
				goto end;
119
80
		} else if (!strcmp(*args, "-out")) {
120
28
			if (args[1]) {
121
28
				args++;
122
28
				outfile = *args;
123
28
			} else
124
				badarg = 1;
125
52
		} else if (strcmp(*args, "-algorithm") == 0) {
126
16
			if (!args[1])
127
				goto bad;
128
16
			if (!init_gen_str(bio_err, &ctx, *(++args), do_param))
129
				goto end;
130
36
		} else if (strcmp(*args, "-pkeyopt") == 0) {
131
20
			if (!args[1])
132
				goto bad;
133
20
			if (!ctx) {
134
				BIO_puts(bio_err, "No keytype specified\n");
135
				goto bad;
136
20
			} else if (pkey_ctrl_string(ctx, *(++args)) <= 0) {
137
				BIO_puts(bio_err, "parameter setting error\n");
138
				ERR_print_errors(bio_err);
139
				goto end;
140
			}
141
16
		} else if (strcmp(*args, "-genparam") == 0) {
142
12
			if (ctx)
143
				goto bad;
144
			do_param = 1;
145
16
		} else if (strcmp(*args, "-text") == 0)
146
			text = 1;
147
		else {
148
4
			cipher = EVP_get_cipherbyname(*args + 1);
149
4
			if (!cipher) {
150
8
				BIO_printf(bio_err, "Unknown cipher %s\n",
151
4
				    *args + 1);
152
				badarg = 1;
153
4
			}
154
4
			if (do_param == 1)
155
				badarg = 1;
156
		}
157
92
		args++;
158
	}
159
160
32
	if (!ctx)
161
4
		badarg = 1;
162
163
32
	if (badarg) {
164
bad:
165
4
		BIO_printf(bio_err, "Usage: genpkey [options]\n");
166
4
		BIO_printf(bio_err, "where options may be\n");
167
4
		BIO_printf(bio_err, "-out file          output file\n");
168
4
		BIO_printf(bio_err, "-outform X         output format (DER or PEM)\n");
169
4
		BIO_printf(bio_err, "-pass arg          output file pass phrase source\n");
170
4
		BIO_printf(bio_err, "-<cipher>          use cipher <cipher> to encrypt the key\n");
171
4
		BIO_printf(bio_err, "-paramfile file    parameters file\n");
172
4
		BIO_printf(bio_err, "-algorithm alg     the public key algorithm\n");
173
4
		BIO_printf(bio_err, "-pkeyopt opt:value set the public key algorithm option <opt>\n"
174
		    "                   to value <value>\n");
175
4
		BIO_printf(bio_err, "-genparam          generate parameters, not key\n");
176
4
		BIO_printf(bio_err, "-text              print the in text\n");
177
4
		BIO_printf(bio_err, "NB: options order may be important!  See the manual page.\n");
178
4
		goto end;
179
	}
180
28
	if (!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
181
		BIO_puts(bio_err, "Error getting password\n");
182
		goto end;
183
	}
184
28
	if (outfile) {
185
28
		if (!(out = BIO_new_file(outfile, "wb"))) {
186
			BIO_printf(bio_err,
187
			    "Can't open output file %s\n", outfile);
188
			goto end;
189
		}
190
	} else {
191
		out = BIO_new_fp(stdout, BIO_NOCLOSE);
192
	}
193
194
28
	EVP_PKEY_CTX_set_cb(ctx, genpkey_cb);
195
28
	EVP_PKEY_CTX_set_app_data(ctx, bio_err);
196
197
28
	if (do_param) {
198
12
		if (EVP_PKEY_paramgen(ctx, &pkey) <= 0) {
199
			BIO_puts(bio_err, "Error generating parameters\n");
200
			ERR_print_errors(bio_err);
201
			goto end;
202
		}
203
	} else {
204
16
		if (EVP_PKEY_keygen(ctx, &pkey) <= 0) {
205
			BIO_puts(bio_err, "Error generating key\n");
206
			ERR_print_errors(bio_err);
207
			goto end;
208
		}
209
	}
210
211
28
	if (do_param)
212
12
		rv = PEM_write_bio_Parameters(out, pkey);
213
16
	else if (outformat == FORMAT_PEM)
214
32
		rv = PEM_write_bio_PrivateKey(out, pkey, cipher, NULL, 0,
215
16
		    NULL, pass);
216
	else if (outformat == FORMAT_ASN1)
217
		rv = i2d_PrivateKey_bio(out, pkey);
218
	else {
219
		BIO_printf(bio_err, "Bad format specified for key\n");
220
		goto end;
221
	}
222
223
28
	if (rv <= 0) {
224
		BIO_puts(bio_err, "Error writing key\n");
225
		ERR_print_errors(bio_err);
226
	}
227
28
	if (text) {
228
		if (do_param)
229
			rv = EVP_PKEY_print_params(out, pkey, 0, NULL);
230
		else
231
			rv = EVP_PKEY_print_private(out, pkey, 0, NULL);
232
233
		if (rv <= 0) {
234
			BIO_puts(bio_err, "Error printing key\n");
235
			ERR_print_errors(bio_err);
236
		}
237
	}
238
28
	ret = 0;
239
240
end:
241
32
	if (pkey)
242
28
		EVP_PKEY_free(pkey);
243
32
	if (ctx)
244
28
		EVP_PKEY_CTX_free(ctx);
245
32
	if (out)
246
28
		BIO_free_all(out);
247
32
	BIO_free(in);
248
32
	free(pass);
249
250
32
	return ret;
251
32
}
252
253
static int
254
init_keygen_file(BIO * err, EVP_PKEY_CTX ** pctx,
255
    const char *file)
256
{
257
	BIO *pbio;
258
	EVP_PKEY *pkey = NULL;
259
	EVP_PKEY_CTX *ctx = NULL;
260
24
	if (*pctx) {
261
		BIO_puts(err, "Parameters already set!\n");
262
		return 0;
263
	}
264
12
	pbio = BIO_new_file(file, "r");
265
12
	if (!pbio) {
266
		BIO_printf(err, "Can't open parameter file %s\n", file);
267
		return 0;
268
	}
269
12
	pkey = PEM_read_bio_Parameters(pbio, NULL);
270
12
	BIO_free(pbio);
271
272
12
	if (!pkey) {
273
		BIO_printf(bio_err, "Error reading parameter file %s\n", file);
274
		return 0;
275
	}
276
12
	ctx = EVP_PKEY_CTX_new(pkey, NULL);
277
12
	if (!ctx)
278
		goto err;
279
12
	if (EVP_PKEY_keygen_init(ctx) <= 0)
280
		goto err;
281
12
	EVP_PKEY_free(pkey);
282
12
	*pctx = ctx;
283
12
	return 1;
284
285
err:
286
	BIO_puts(err, "Error initializing context\n");
287
	ERR_print_errors(err);
288
	if (ctx)
289
		EVP_PKEY_CTX_free(ctx);
290
	if (pkey)
291
		EVP_PKEY_free(pkey);
292
	return 0;
293
294
12
}
295
296
int
297
init_gen_str(BIO * err, EVP_PKEY_CTX ** pctx,
298
    const char *algname, int do_param)
299
{
300
	EVP_PKEY_CTX *ctx = NULL;
301
	const EVP_PKEY_ASN1_METHOD *ameth;
302
136
	int pkey_id;
303
304
68
	if (*pctx) {
305
		BIO_puts(err, "Algorithm already set!\n");
306
		return 0;
307
	}
308
68
	ameth = EVP_PKEY_asn1_find_str(NULL, algname, -1);
309
310
68
	if (!ameth) {
311
		BIO_printf(bio_err, "Algorithm %s not found\n", algname);
312
		return 0;
313
	}
314
68
	ERR_clear_error();
315
316
68
	EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
317
68
	ctx = EVP_PKEY_CTX_new_id(pkey_id, NULL);
318
319
68
	if (!ctx)
320
		goto err;
321
68
	if (do_param) {
322
12
		if (EVP_PKEY_paramgen_init(ctx) <= 0)
323
			goto err;
324
	} else {
325
56
		if (EVP_PKEY_keygen_init(ctx) <= 0)
326
			goto err;
327
	}
328
329
68
	*pctx = ctx;
330
68
	return 1;
331
332
err:
333
	BIO_printf(err, "Error initializing %s context\n", algname);
334
	ERR_print_errors(err);
335
	if (ctx)
336
		EVP_PKEY_CTX_free(ctx);
337
	return 0;
338
339
68
}
340
341
static int
342
genpkey_cb(EVP_PKEY_CTX * ctx)
343
{
344
31560
	char c = '*';
345
15780
	BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
346
	int p;
347
15780
	p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
348
15780
	if (p == 0)
349
14802
		c = '.';
350
15780
	if (p == 1)
351
938
		c = '+';
352
15780
	if (p == 2)
353
20
		c = '*';
354
15780
	if (p == 3)
355
20
		c = '\n';
356
15780
	BIO_write(b, &c, 1);
357
15780
	(void) BIO_flush(b);
358
15780
	return 1;
359
15780
}