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Diffstat (limited to 'src/lib/libcrypto/hmac/hmac.c')
-rw-r--r--src/lib/libcrypto/hmac/hmac.c225
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diff --git a/src/lib/libcrypto/hmac/hmac.c b/src/lib/libcrypto/hmac/hmac.c
deleted file mode 100644
index 155e32a540..0000000000
--- a/src/lib/libcrypto/hmac/hmac.c
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@@ -1,225 +0,0 @@
1/* $OpenBSD: hmac.c,v 1.22 2015/02/10 09:52:35 miod Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <stdio.h>
60#include <stdlib.h>
61#include <string.h>
62
63#include <openssl/err.h>
64#include <openssl/hmac.h>
65
66int
67HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len, const EVP_MD *md,
68 ENGINE *impl)
69{
70 int i, j, reset = 0;
71 unsigned char pad[HMAC_MAX_MD_CBLOCK];
72
73 if (md != NULL) {
74 reset = 1;
75 ctx->md = md;
76 } else
77 md = ctx->md;
78
79 if (key != NULL) {
80 reset = 1;
81 j = EVP_MD_block_size(md);
82 if ((size_t)j > sizeof(ctx->key)) {
83 EVPerr(EVP_F_HMAC_INIT_EX, EVP_R_BAD_BLOCK_LENGTH);
84 goto err;
85 }
86 if (j < len) {
87 if (!EVP_DigestInit_ex(&ctx->md_ctx, md, impl))
88 goto err;
89 if (!EVP_DigestUpdate(&ctx->md_ctx, key, len))
90 goto err;
91 if (!EVP_DigestFinal_ex(&(ctx->md_ctx), ctx->key,
92 &ctx->key_length))
93 goto err;
94 } else {
95 if ((size_t)len > sizeof(ctx->key)) {
96 EVPerr(EVP_F_HMAC_INIT_EX,
97 EVP_R_BAD_KEY_LENGTH);
98 goto err;
99 }
100 memcpy(ctx->key, key, len);
101 ctx->key_length = len;
102 }
103 if (ctx->key_length != HMAC_MAX_MD_CBLOCK)
104 memset(&ctx->key[ctx->key_length], 0,
105 HMAC_MAX_MD_CBLOCK - ctx->key_length);
106 }
107
108 if (reset) {
109 for (i = 0; i < HMAC_MAX_MD_CBLOCK; i++)
110 pad[i] = 0x36 ^ ctx->key[i];
111 if (!EVP_DigestInit_ex(&ctx->i_ctx, md, impl))
112 goto err;
113 if (!EVP_DigestUpdate(&ctx->i_ctx, pad, EVP_MD_block_size(md)))
114 goto err;
115
116 for (i = 0; i < HMAC_MAX_MD_CBLOCK; i++)
117 pad[i] = 0x5c ^ ctx->key[i];
118 if (!EVP_DigestInit_ex(&ctx->o_ctx, md, impl))
119 goto err;
120 if (!EVP_DigestUpdate(&ctx->o_ctx, pad, EVP_MD_block_size(md)))
121 goto err;
122 }
123 if (!EVP_MD_CTX_copy_ex(&ctx->md_ctx, &ctx->i_ctx))
124 goto err;
125 return 1;
126err:
127 return 0;
128}
129
130int
131HMAC_Init(HMAC_CTX *ctx, const void *key, int len, const EVP_MD *md)
132{
133 if (key && md)
134 HMAC_CTX_init(ctx);
135 return HMAC_Init_ex(ctx, key, len, md, NULL);
136}
137
138int
139HMAC_Update(HMAC_CTX *ctx, const unsigned char *data, size_t len)
140{
141 return EVP_DigestUpdate(&ctx->md_ctx, data, len);
142}
143
144int
145HMAC_Final(HMAC_CTX *ctx, unsigned char *md, unsigned int *len)
146{
147 unsigned int i;
148 unsigned char buf[EVP_MAX_MD_SIZE];
149
150 if (!EVP_DigestFinal_ex(&ctx->md_ctx, buf, &i))
151 goto err;
152 if (!EVP_MD_CTX_copy_ex(&ctx->md_ctx, &ctx->o_ctx))
153 goto err;
154 if (!EVP_DigestUpdate(&ctx->md_ctx, buf, i))
155 goto err;
156 if (!EVP_DigestFinal_ex(&ctx->md_ctx, md, len))
157 goto err;
158 return 1;
159err:
160 return 0;
161}
162
163void
164HMAC_CTX_init(HMAC_CTX *ctx)
165{
166 EVP_MD_CTX_init(&ctx->i_ctx);
167 EVP_MD_CTX_init(&ctx->o_ctx);
168 EVP_MD_CTX_init(&ctx->md_ctx);
169}
170
171int
172HMAC_CTX_copy(HMAC_CTX *dctx, HMAC_CTX *sctx)
173{
174 if (!EVP_MD_CTX_copy(&dctx->i_ctx, &sctx->i_ctx))
175 goto err;
176 if (!EVP_MD_CTX_copy(&dctx->o_ctx, &sctx->o_ctx))
177 goto err;
178 if (!EVP_MD_CTX_copy(&dctx->md_ctx, &sctx->md_ctx))
179 goto err;
180 memcpy(dctx->key, sctx->key, HMAC_MAX_MD_CBLOCK);
181 dctx->key_length = sctx->key_length;
182 dctx->md = sctx->md;
183 return 1;
184err:
185 return 0;
186}
187
188void
189HMAC_CTX_cleanup(HMAC_CTX *ctx)
190{
191 EVP_MD_CTX_cleanup(&ctx->i_ctx);
192 EVP_MD_CTX_cleanup(&ctx->o_ctx);
193 EVP_MD_CTX_cleanup(&ctx->md_ctx);
194 memset(ctx, 0, sizeof *ctx);
195}
196
197unsigned char *
198HMAC(const EVP_MD *evp_md, const void *key, int key_len, const unsigned char *d,
199 size_t n, unsigned char *md, unsigned int *md_len)
200{
201 HMAC_CTX c;
202 static unsigned char m[EVP_MAX_MD_SIZE];
203
204 if (md == NULL)
205 md = m;
206 HMAC_CTX_init(&c);
207 if (!HMAC_Init(&c, key, key_len, evp_md))
208 goto err;
209 if (!HMAC_Update(&c, d, n))
210 goto err;
211 if (!HMAC_Final(&c, md, md_len))
212 goto err;
213 HMAC_CTX_cleanup(&c);
214 return md;
215err:
216 return NULL;
217}
218
219void
220HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags)
221{
222 EVP_MD_CTX_set_flags(&ctx->i_ctx, flags);
223 EVP_MD_CTX_set_flags(&ctx->o_ctx, flags);
224 EVP_MD_CTX_set_flags(&ctx->md_ctx, flags);
225}
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