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-rw-r--r--src/lib/libcrypto/hmac/hmac.c276
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diff --git a/src/lib/libcrypto/hmac/hmac.c b/src/lib/libcrypto/hmac/hmac.c
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index dc1614d3ce..0000000000
--- a/src/lib/libcrypto/hmac/hmac.c
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@@ -1,276 +0,0 @@
1/* $OpenBSD: hmac.c,v 1.36 2024/08/31 10:42:21 tb 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
66#include "evp_local.h"
67#include "hmac_local.h"
68
69int
70HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len, const EVP_MD *md,
71 ENGINE *impl)
72{
73 int i, j, reset = 0;
74 unsigned char pad[HMAC_MAX_MD_CBLOCK];
75
76 /* If we are changing MD then we must have a key */
77 if (md != NULL && md != ctx->md && (key == NULL || len < 0))
78 return 0;
79
80 if (md != NULL) {
81 reset = 1;
82 ctx->md = md;
83 } else if (ctx->md != NULL)
84 md = ctx->md;
85 else
86 return 0;
87
88 if (key != NULL) {
89 reset = 1;
90 j = EVP_MD_block_size(md);
91 if ((size_t)j > sizeof(ctx->key)) {
92 EVPerror(EVP_R_BAD_BLOCK_LENGTH);
93 goto err;
94 }
95 if (j < len) {
96 if (!EVP_DigestInit_ex(&ctx->md_ctx, md, impl))
97 goto err;
98 if (!EVP_DigestUpdate(&ctx->md_ctx, key, len))
99 goto err;
100 if (!EVP_DigestFinal_ex(&(ctx->md_ctx), ctx->key,
101 &ctx->key_length))
102 goto err;
103 } else {
104 if (len < 0 || (size_t)len > sizeof(ctx->key)) {
105 EVPerror(EVP_R_BAD_KEY_LENGTH);
106 goto err;
107 }
108 memcpy(ctx->key, key, len);
109 ctx->key_length = len;
110 }
111 if (ctx->key_length != HMAC_MAX_MD_CBLOCK)
112 memset(&ctx->key[ctx->key_length], 0,
113 HMAC_MAX_MD_CBLOCK - ctx->key_length);
114 }
115
116 if (reset) {
117 for (i = 0; i < HMAC_MAX_MD_CBLOCK; i++)
118 pad[i] = 0x36 ^ ctx->key[i];
119 if (!EVP_DigestInit_ex(&ctx->i_ctx, md, impl))
120 goto err;
121 if (!EVP_DigestUpdate(&ctx->i_ctx, pad, EVP_MD_block_size(md)))
122 goto err;
123
124 for (i = 0; i < HMAC_MAX_MD_CBLOCK; i++)
125 pad[i] = 0x5c ^ ctx->key[i];
126 if (!EVP_DigestInit_ex(&ctx->o_ctx, md, impl))
127 goto err;
128 if (!EVP_DigestUpdate(&ctx->o_ctx, pad, EVP_MD_block_size(md)))
129 goto err;
130 }
131 if (!EVP_MD_CTX_copy_ex(&ctx->md_ctx, &ctx->i_ctx))
132 goto err;
133 return 1;
134err:
135 return 0;
136}
137LCRYPTO_ALIAS(HMAC_Init_ex);
138
139int
140HMAC_Update(HMAC_CTX *ctx, const unsigned char *data, size_t len)
141{
142 if (ctx->md == NULL)
143 return 0;
144
145 return EVP_DigestUpdate(&ctx->md_ctx, data, len);
146}
147LCRYPTO_ALIAS(HMAC_Update);
148
149int
150HMAC_Final(HMAC_CTX *ctx, unsigned char *md, unsigned int *len)
151{
152 unsigned int i;
153 unsigned char buf[EVP_MAX_MD_SIZE];
154
155 if (ctx->md == NULL)
156 goto err;
157
158 if (!EVP_DigestFinal_ex(&ctx->md_ctx, buf, &i))
159 goto err;
160 if (!EVP_MD_CTX_copy_ex(&ctx->md_ctx, &ctx->o_ctx))
161 goto err;
162 if (!EVP_DigestUpdate(&ctx->md_ctx, buf, i))
163 goto err;
164 if (!EVP_DigestFinal_ex(&ctx->md_ctx, md, len))
165 goto err;
166 return 1;
167err:
168 return 0;
169}
170LCRYPTO_ALIAS(HMAC_Final);
171
172HMAC_CTX *
173HMAC_CTX_new(void)
174{
175 return calloc(1, sizeof(HMAC_CTX));
176}
177LCRYPTO_ALIAS(HMAC_CTX_new);
178
179void
180HMAC_CTX_free(HMAC_CTX *ctx)
181{
182 if (ctx == NULL)
183 return;
184
185 HMAC_CTX_cleanup(ctx);
186
187 free(ctx);
188}
189LCRYPTO_ALIAS(HMAC_CTX_free);
190
191int
192HMAC_CTX_reset(HMAC_CTX *ctx)
193{
194 HMAC_CTX_cleanup(ctx);
195 HMAC_CTX_init(ctx);
196 return 1;
197}
198LCRYPTO_ALIAS(HMAC_CTX_reset);
199
200void
201HMAC_CTX_init(HMAC_CTX *ctx)
202{
203 EVP_MD_CTX_legacy_clear(&ctx->i_ctx);
204 EVP_MD_CTX_legacy_clear(&ctx->o_ctx);
205 EVP_MD_CTX_legacy_clear(&ctx->md_ctx);
206 ctx->md = NULL;
207}
208
209int
210HMAC_CTX_copy(HMAC_CTX *dctx, HMAC_CTX *sctx)
211{
212 if (!EVP_MD_CTX_copy(&dctx->i_ctx, &sctx->i_ctx))
213 goto err;
214 if (!EVP_MD_CTX_copy(&dctx->o_ctx, &sctx->o_ctx))
215 goto err;
216 if (!EVP_MD_CTX_copy(&dctx->md_ctx, &sctx->md_ctx))
217 goto err;
218 memcpy(dctx->key, sctx->key, HMAC_MAX_MD_CBLOCK);
219 dctx->key_length = sctx->key_length;
220 dctx->md = sctx->md;
221 return 1;
222err:
223 return 0;
224}
225LCRYPTO_ALIAS(HMAC_CTX_copy);
226
227void
228HMAC_CTX_cleanup(HMAC_CTX *ctx)
229{
230 EVP_MD_CTX_cleanup(&ctx->i_ctx);
231 EVP_MD_CTX_cleanup(&ctx->o_ctx);
232 EVP_MD_CTX_cleanup(&ctx->md_ctx);
233 explicit_bzero(ctx, sizeof(*ctx));
234}
235
236void
237HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags)
238{
239 EVP_MD_CTX_set_flags(&ctx->i_ctx, flags);
240 EVP_MD_CTX_set_flags(&ctx->o_ctx, flags);
241 EVP_MD_CTX_set_flags(&ctx->md_ctx, flags);
242}
243LCRYPTO_ALIAS(HMAC_CTX_set_flags);
244
245const EVP_MD *
246HMAC_CTX_get_md(const HMAC_CTX *ctx)
247{
248 return ctx->md;
249}
250LCRYPTO_ALIAS(HMAC_CTX_get_md);
251
252unsigned char *
253HMAC(const EVP_MD *evp_md, const void *key, int key_len, const unsigned char *d,
254 size_t n, unsigned char *md, unsigned int *md_len)
255{
256 HMAC_CTX c;
257 const unsigned char dummy_key[1] = { 0 };
258
259 if (key == NULL) {
260 key = dummy_key;
261 key_len = 0;
262 }
263 HMAC_CTX_init(&c);
264 if (!HMAC_Init_ex(&c, key, key_len, evp_md, NULL))
265 goto err;
266 if (!HMAC_Update(&c, d, n))
267 goto err;
268 if (!HMAC_Final(&c, md, md_len))
269 goto err;
270 HMAC_CTX_cleanup(&c);
271 return md;
272err:
273 HMAC_CTX_cleanup(&c);
274 return NULL;
275}
276LCRYPTO_ALIAS(HMAC);
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-05-06 23:33:17 +0000