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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/crypto/../../libssl/src/crypto/evp/e_rc4_hmac_md5.c	Lines:	2	100	2.0 %
Date:	2016-12-06	Branches:	0	47	0.0 %


/* $OpenBSD: e_rc4_hmac_md5.c,v 1.5 2014/08/11 13:29:43 bcook Exp $ */
/* ====================================================================
 * Copyright (c) 2011 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 */

#include <stdio.h>
#include <string.h>

#include <openssl/opensslconf.h>

#if !defined(OPENSSL_NO_RC4) && !defined(OPENSSL_NO_MD5)

#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/rc4.h>
#include <openssl/md5.h>

#ifndef EVP_CIPH_FLAG_AEAD_CIPHER
#define EVP_CIPH_FLAG_AEAD_CIPHER	0x200000
#define EVP_CTRL_AEAD_TLS1_AAD		0x16
#define EVP_CTRL_AEAD_SET_MAC_KEY	0x17
#endif

/* FIXME: surely this is available elsewhere? */
#define EVP_RC4_KEY_SIZE		16

typedef struct {
	RC4_KEY		ks;
	MD5_CTX		head, tail, md;
	size_t		payload_length;
} EVP_RC4_HMAC_MD5;

#define NO_PAYLOAD_LENGTH	((size_t)-1)

void rc4_md5_enc (RC4_KEY *key, const void *in0, void *out,
    MD5_CTX *ctx, const void *inp, size_t blocks);

#define data(ctx) ((EVP_RC4_HMAC_MD5 *)(ctx)->cipher_data)

static int
rc4_hmac_md5_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *inkey,
    const unsigned char *iv, int enc)
{
	EVP_RC4_HMAC_MD5 *key = data(ctx);

	RC4_set_key(&key->ks, EVP_CIPHER_CTX_key_length(ctx), inkey);

	MD5_Init(&key->head);	/* handy when benchmarking */
	key->tail = key->head;
	key->md = key->head;

	key->payload_length = NO_PAYLOAD_LENGTH;

	return 1;
}

#if	!defined(OPENSSL_NO_ASM) && defined(RC4_MD5_ASM) &&	( \
	defined(__x86_64)	|| defined(__x86_64__)	|| \
	defined(_M_AMD64)	|| defined(_M_X64)	|| \
	defined(__INTEL__)		) && \
	!(defined(__APPLE__) && defined(__MACH__))
#define	STITCHED_CALL
#endif

#if !defined(STITCHED_CALL)
#define	rc4_off 0
#define	md5_off 0
#endif

static int
rc4_hmac_md5_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
    const unsigned char *in, size_t len)
{
	EVP_RC4_HMAC_MD5 *key = data(ctx);
#if defined(STITCHED_CALL)
	size_t	rc4_off = 32-1-(key->ks.x&(32-1)),	/* 32 is $MOD from rc4_md5-x86_64.pl */
	md5_off = MD5_CBLOCK - key->md.num,
	    blocks;
	unsigned int l;
	extern unsigned int OPENSSL_ia32cap_P[];
#endif
	size_t	plen = key->payload_length;

	if (plen != NO_PAYLOAD_LENGTH && len != (plen + MD5_DIGEST_LENGTH))
		return 0;

	if (ctx->encrypt) {
		if (plen == NO_PAYLOAD_LENGTH)
			plen = len;
#if defined(STITCHED_CALL)
		/* cipher has to "fall behind" */
		if (rc4_off > md5_off)
			md5_off += MD5_CBLOCK;

		if (plen > md5_off &&
		    (blocks = (plen - md5_off) / MD5_CBLOCK) &&
		    (OPENSSL_ia32cap_P[0]&(1 << 20)) == 0) {
			MD5_Update(&key->md, in, md5_off);
			RC4(&key->ks, rc4_off, in, out);

			rc4_md5_enc(&key->ks, in + rc4_off, out + rc4_off,
			    &key->md, in + md5_off, blocks);
			blocks *= MD5_CBLOCK;
			rc4_off += blocks;
			md5_off += blocks;
			key->md.Nh += blocks >> 29;
			key->md.Nl += blocks <<= 3;
			if (key->md.Nl < (unsigned int)blocks)
				key->md.Nh++;
		} else {
			rc4_off = 0;
			md5_off = 0;
		}
#endif
		MD5_Update(&key->md, in + md5_off, plen - md5_off);

		if (plen!=len) {	/* "TLS" mode of operation */
			if (in != out)
				memcpy(out + rc4_off, in + rc4_off,
				    plen - rc4_off);

			/* calculate HMAC and append it to payload */
			MD5_Final(out + plen, &key->md);
			key->md = key->tail;
			MD5_Update(&key->md, out + plen, MD5_DIGEST_LENGTH);
			MD5_Final(out + plen, &key->md);

			/* encrypt HMAC at once */
			RC4(&key->ks, len - rc4_off, out + rc4_off,
			    out + rc4_off);
		} else {
			RC4(&key->ks, len - rc4_off, in + rc4_off,
			    out + rc4_off);
		}
	} else {
		unsigned char mac[MD5_DIGEST_LENGTH];
#if defined(STITCHED_CALL)
		/* digest has to "fall behind" */
		if (md5_off > rc4_off)
			rc4_off += 2*MD5_CBLOCK;
		else
			rc4_off += MD5_CBLOCK;

		if (len > rc4_off && (blocks = (len - rc4_off) / MD5_CBLOCK) &&
		    (OPENSSL_ia32cap_P[0] & (1 << 20)) == 0) {
			RC4(&key->ks, rc4_off, in, out);
			MD5_Update(&key->md, out, md5_off);

			rc4_md5_enc(&key->ks, in + rc4_off, out + rc4_off,
			    &key->md, out + md5_off, blocks);
			blocks *= MD5_CBLOCK;
			rc4_off += blocks;
			md5_off += blocks;
			l = (key->md.Nl + (blocks << 3)) & 0xffffffffU;
			if (l < key->md.Nl)
				key->md.Nh++;
			key->md.Nl = l;
			key->md.Nh += blocks >> 29;
		} else {
			md5_off = 0;
			rc4_off = 0;
		}
#endif
		/* decrypt HMAC at once */
		RC4(&key->ks, len - rc4_off, in + rc4_off, out + rc4_off);
		if (plen!=NO_PAYLOAD_LENGTH) {	/* "TLS" mode of operation */
			MD5_Update(&key->md, out + md5_off, plen - md5_off);

			/* calculate HMAC and verify it */
			MD5_Final(mac, &key->md);
			key->md = key->tail;
			MD5_Update(&key->md, mac, MD5_DIGEST_LENGTH);
			MD5_Final(mac, &key->md);

			if (memcmp(out + plen, mac, MD5_DIGEST_LENGTH))
				return 0;
		} else {
			MD5_Update(&key->md, out + md5_off, len - md5_off);
		}
	}

	key->payload_length = NO_PAYLOAD_LENGTH;

	return 1;
}

static int
rc4_hmac_md5_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
{
	EVP_RC4_HMAC_MD5 *key = data(ctx);

	switch (type) {
	case EVP_CTRL_AEAD_SET_MAC_KEY:
		{
			unsigned int  i;
			unsigned char hmac_key[64];

			memset (hmac_key, 0, sizeof(hmac_key));

			if (arg > (int)sizeof(hmac_key)) {
				MD5_Init(&key->head);
				MD5_Update(&key->head, ptr, arg);
				MD5_Final(hmac_key, &key->head);
			} else {
				memcpy(hmac_key, ptr, arg);
			}

			for (i = 0; i < sizeof(hmac_key); i++)
				hmac_key[i] ^= 0x36;		/* ipad */
			MD5_Init(&key->head);
			MD5_Update(&key->head, hmac_key, sizeof(hmac_key));

			for (i = 0; i < sizeof(hmac_key); i++)
				hmac_key[i] ^= 0x36 ^ 0x5c;	/* opad */
			MD5_Init(&key->tail);
			MD5_Update(&key->tail, hmac_key, sizeof(hmac_key));

			return 1;
		}
	case EVP_CTRL_AEAD_TLS1_AAD:
		{
			unsigned char *p = ptr;
			unsigned int len = p[arg - 2] << 8 | p[arg - 1];

			if (!ctx->encrypt) {
				len -= MD5_DIGEST_LENGTH;
				p[arg - 2] = len >> 8;
				p[arg - 1] = len;
			}
			key->payload_length = len;
			key->md = key->head;
			MD5_Update(&key->md, p, arg);

			return MD5_DIGEST_LENGTH;
		}
	default:
		return -1;
	}
}

static EVP_CIPHER r4_hmac_md5_cipher = {
#ifdef NID_rc4_hmac_md5
	NID_rc4_hmac_md5,
#else
	NID_undef,
#endif
	1, EVP_RC4_KEY_SIZE, 0,
	EVP_CIPH_STREAM_CIPHER|EVP_CIPH_VARIABLE_LENGTH|EVP_CIPH_FLAG_AEAD_CIPHER,
	rc4_hmac_md5_init_key,
	rc4_hmac_md5_cipher,
	NULL,
	sizeof(EVP_RC4_HMAC_MD5),
	NULL,
	NULL,
	rc4_hmac_md5_ctrl,
	NULL
};

const EVP_CIPHER *
EVP_rc4_hmac_md5(void)
{
	return (&r4_hmac_md5_cipher);
}
#endif


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: e_rc4_hmac_md5.c,v 1.5 2014/08/11 13:29:43 bcook Exp $ */
2			/* ====================================================================
3			* Copyright (c) 2011 The OpenSSL Project. All rights reserved.
4			*
5			* Redistribution and use in source and binary forms, with or without
6			* modification, are permitted provided that the following conditions
7			* are met:
8			*
9			* 1. Redistributions of source code must retain the above copyright
10			* notice, this list of conditions and the following disclaimer.
11			*
12			* 2. Redistributions in binary form must reproduce the above copyright
13			* notice, this list of conditions and the following disclaimer in
14			* the documentation and/or other materials provided with the
15			* distribution.
16			*
17			* 3. All advertising materials mentioning features or use of this
18			* software must display the following acknowledgment:
19			* "This product includes software developed by the OpenSSL Project
20			* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
21			*
22			* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23			* endorse or promote products derived from this software without
24			* prior written permission. For written permission, please contact
25			* licensing@OpenSSL.org.
26			*
27			* 5. Products derived from this software may not be called "OpenSSL"
28			* nor may "OpenSSL" appear in their names without prior written
29			* permission of the OpenSSL Project.
30			*
31			* 6. Redistributions of any form whatsoever must retain the following
32			* acknowledgment:
33			* "This product includes software developed by the OpenSSL Project
34			* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
35			*
36			* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37			* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39			* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40			* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41			* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42			* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43			* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45			* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46			* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47			* OF THE POSSIBILITY OF SUCH DAMAGE.
48			* ====================================================================
49			*/
50
51			#include <stdio.h>
52			#include <string.h>
53
54			#include <openssl/opensslconf.h>
55
56			#if !defined(OPENSSL_NO_RC4) && !defined(OPENSSL_NO_MD5)
57
58			#include <openssl/evp.h>
59			#include <openssl/objects.h>
60			#include <openssl/rc4.h>
61			#include <openssl/md5.h>
62
63			#ifndef EVP_CIPH_FLAG_AEAD_CIPHER
64			#define EVP_CIPH_FLAG_AEAD_CIPHER 0x200000
65			#define EVP_CTRL_AEAD_TLS1_AAD 0x16
66			#define EVP_CTRL_AEAD_SET_MAC_KEY 0x17
67			#endif
68
69			/* FIXME: surely this is available elsewhere? */
70			#define EVP_RC4_KEY_SIZE 16
71
72			typedef struct {
73			RC4_KEY ks;
74			MD5_CTX head, tail, md;
75			size_t payload_length;
76			} EVP_RC4_HMAC_MD5;
77
78			#define NO_PAYLOAD_LENGTH ((size_t)-1)
79
80			void rc4_md5_enc (RC4_KEY key, const void in0, void *out,
81			MD5_CTX ctx, const void inp, size_t blocks);
82
83			#define data(ctx) ((EVP_RC4_HMAC_MD5 *)(ctx)->cipher_data)
84
85			static int
86			rc4_hmac_md5_init_key(EVP_CIPHER_CTX ctx, const unsigned char inkey,
87			const unsigned char *iv, int enc)
88			{
89			EVP_RC4_HMAC_MD5 *key = data(ctx);
90
91			RC4_set_key(&key->ks, EVP_CIPHER_CTX_key_length(ctx), inkey);
92
93			MD5_Init(&key->head); /* handy when benchmarking */
94			key->tail = key->head;
95			key->md = key->head;
96
97			key->payload_length = NO_PAYLOAD_LENGTH;
98
99			return 1;
100			}
101
102			#if !defined(OPENSSL_NO_ASM) && defined(RC4_MD5_ASM) && ( \
103			defined(__x86_64) \|\| defined(__x86_64__) \|\| \
104			defined(_M_AMD64) \|\| defined(_M_X64) \|\| \
105			defined(__INTEL__) ) && \
106			!(defined(__APPLE__) && defined(__MACH__))
107			#define STITCHED_CALL
108			#endif
109
110			#if !defined(STITCHED_CALL)
111			#define rc4_off 0
112			#define md5_off 0
113			#endif
114
115			static int
116			rc4_hmac_md5_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
117			const unsigned char *in, size_t len)
118			{
119			EVP_RC4_HMAC_MD5 *key = data(ctx);
120			#if defined(STITCHED_CALL)
121			size_t rc4_off = 32-1-(key->ks.x&(32-1)), /* 32 is $MOD from rc4_md5-x86_64.pl */
122			md5_off = MD5_CBLOCK - key->md.num,
123			blocks;
124			unsigned int l;
125			extern unsigned int OPENSSL_ia32cap_P[];
126			#endif
127			size_t plen = key->payload_length;
128
129			if (plen != NO_PAYLOAD_LENGTH && len != (plen + MD5_DIGEST_LENGTH))
130			return 0;
131
132			if (ctx->encrypt) {
133			if (plen == NO_PAYLOAD_LENGTH)
134			plen = len;
135			#if defined(STITCHED_CALL)
136			/* cipher has to "fall behind" */
137			if (rc4_off > md5_off)
138			md5_off += MD5_CBLOCK;
139
140			if (plen > md5_off &&
141			(blocks = (plen - md5_off) / MD5_CBLOCK) &&
142			(OPENSSL_ia32cap_P[0]&(1 << 20)) == 0) {
143			MD5_Update(&key->md, in, md5_off);
144			RC4(&key->ks, rc4_off, in, out);
145
146			rc4_md5_enc(&key->ks, in + rc4_off, out + rc4_off,
147			&key->md, in + md5_off, blocks);
148			blocks *= MD5_CBLOCK;
149			rc4_off += blocks;
150			md5_off += blocks;
151			key->md.Nh += blocks >> 29;
152			key->md.Nl += blocks <<= 3;
153			if (key->md.Nl < (unsigned int)blocks)
154			key->md.Nh++;
155			} else {
156			rc4_off = 0;
157			md5_off = 0;
158			}
159			#endif
160			MD5_Update(&key->md, in + md5_off, plen - md5_off);
161
162			if (plen!=len) { /* "TLS" mode of operation */
163			if (in != out)
164			memcpy(out + rc4_off, in + rc4_off,
165			plen - rc4_off);
166
167			/* calculate HMAC and append it to payload */
168			MD5_Final(out + plen, &key->md);
169			key->md = key->tail;
170			MD5_Update(&key->md, out + plen, MD5_DIGEST_LENGTH);
171			MD5_Final(out + plen, &key->md);
172
173			/* encrypt HMAC at once */
174			RC4(&key->ks, len - rc4_off, out + rc4_off,
175			out + rc4_off);
176			} else {
177			RC4(&key->ks, len - rc4_off, in + rc4_off,
178			out + rc4_off);
179			}
180			} else {
181			unsigned char mac[MD5_DIGEST_LENGTH];
182			#if defined(STITCHED_CALL)
183			/* digest has to "fall behind" */
184			if (md5_off > rc4_off)
185			rc4_off += 2*MD5_CBLOCK;
186			else
187			rc4_off += MD5_CBLOCK;
188
189			if (len > rc4_off && (blocks = (len - rc4_off) / MD5_CBLOCK) &&
190			(OPENSSL_ia32cap_P[0] & (1 << 20)) == 0) {
191			RC4(&key->ks, rc4_off, in, out);
192			MD5_Update(&key->md, out, md5_off);
193
194			rc4_md5_enc(&key->ks, in + rc4_off, out + rc4_off,
195			&key->md, out + md5_off, blocks);
196			blocks *= MD5_CBLOCK;
197			rc4_off += blocks;
198			md5_off += blocks;
199			l = (key->md.Nl + (blocks << 3)) & 0xffffffffU;
200			if (l < key->md.Nl)
201			key->md.Nh++;
202			key->md.Nl = l;
203			key->md.Nh += blocks >> 29;
204			} else {
205			md5_off = 0;
206			rc4_off = 0;
207			}
208			#endif
209			/* decrypt HMAC at once */
210			RC4(&key->ks, len - rc4_off, in + rc4_off, out + rc4_off);
211			if (plen!=NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */
212			MD5_Update(&key->md, out + md5_off, plen - md5_off);
213
214			/* calculate HMAC and verify it */
215			MD5_Final(mac, &key->md);
216			key->md = key->tail;
217			MD5_Update(&key->md, mac, MD5_DIGEST_LENGTH);
218			MD5_Final(mac, &key->md);
219
220			if (memcmp(out + plen, mac, MD5_DIGEST_LENGTH))
221			return 0;
222			} else {
223			MD5_Update(&key->md, out + md5_off, len - md5_off);
224			}
225			}
226
227			key->payload_length = NO_PAYLOAD_LENGTH;
228
229			return 1;
230			}
231
232			static int
233			rc4_hmac_md5_ctrl(EVP_CIPHER_CTX ctx, int type, int arg, void ptr)
234			{
235			EVP_RC4_HMAC_MD5 *key = data(ctx);
236
237			switch (type) {
238			case EVP_CTRL_AEAD_SET_MAC_KEY:
239			{
240			unsigned int i;
241			unsigned char hmac_key[64];
242
243			memset (hmac_key, 0, sizeof(hmac_key));
244
245			if (arg > (int)sizeof(hmac_key)) {
246			MD5_Init(&key->head);
247			MD5_Update(&key->head, ptr, arg);
248			MD5_Final(hmac_key, &key->head);
249			} else {
250			memcpy(hmac_key, ptr, arg);
251			}
252
253			for (i = 0; i < sizeof(hmac_key); i++)
254			hmac_key[i] ^= 0x36; /* ipad */
255			MD5_Init(&key->head);
256			MD5_Update(&key->head, hmac_key, sizeof(hmac_key));
257
258			for (i = 0; i < sizeof(hmac_key); i++)
259			hmac_key[i] ^= 0x36 ^ 0x5c; /* opad */
260			MD5_Init(&key->tail);
261			MD5_Update(&key->tail, hmac_key, sizeof(hmac_key));
262
263			return 1;
264			}
265			case EVP_CTRL_AEAD_TLS1_AAD:
266			{
267			unsigned char *p = ptr;
268			unsigned int len = p[arg - 2] << 8 \| p[arg - 1];
269
270			if (!ctx->encrypt) {
271			len -= MD5_DIGEST_LENGTH;
272			p[arg - 2] = len >> 8;
273			p[arg - 1] = len;
274			}
275			key->payload_length = len;
276			key->md = key->head;
277			MD5_Update(&key->md, p, arg);
278
279			return MD5_DIGEST_LENGTH;
280			}
281			default:
282			return -1;
283			}
284			}
285
286			static EVP_CIPHER r4_hmac_md5_cipher = {
287			#ifdef NID_rc4_hmac_md5
288			NID_rc4_hmac_md5,
289			#else
290			NID_undef,
291			#endif
292			1, EVP_RC4_KEY_SIZE, 0,
293			EVP_CIPH_STREAM_CIPHER\|EVP_CIPH_VARIABLE_LENGTH\|EVP_CIPH_FLAG_AEAD_CIPHER,
294			rc4_hmac_md5_init_key,
295			rc4_hmac_md5_cipher,
296			NULL,
297			sizeof(EVP_RC4_HMAC_MD5),
298			NULL,
299			NULL,
300			rc4_hmac_md5_ctrl,
301			NULL
302			};
303
304			const EVP_CIPHER *
305			EVP_rc4_hmac_md5(void)
306		22	{
307		22	return (&r4_hmac_md5_cipher);
308			}
309			#endif