summaryrefslogtreecommitdiff
path: root/src/lib/libcrypto/evp/digest.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/lib/libcrypto/evp/digest.c')
-rw-r--r--src/lib/libcrypto/evp/digest.c377
1 files changed, 0 insertions, 377 deletions
diff --git a/src/lib/libcrypto/evp/digest.c b/src/lib/libcrypto/evp/digest.c
deleted file mode 100644
index 982ba2b136..0000000000
--- a/src/lib/libcrypto/evp/digest.c
+++ /dev/null
@@ -1,377 +0,0 @@
1/* crypto/evp/digest.c */
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 * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 *
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
82 *
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
105 *
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
109 *
110 */
111
112#include <stdio.h>
113#include "cryptlib.h"
114#include <openssl/objects.h>
115#include <openssl/evp.h>
116#ifndef OPENSSL_NO_ENGINE
117#include <openssl/engine.h>
118#endif
119
120void EVP_MD_CTX_init(EVP_MD_CTX *ctx)
121 {
122 memset(ctx,'\0',sizeof *ctx);
123 }
124
125EVP_MD_CTX *EVP_MD_CTX_create(void)
126 {
127 EVP_MD_CTX *ctx=OPENSSL_malloc(sizeof *ctx);
128
129 if (ctx)
130 EVP_MD_CTX_init(ctx);
131
132 return ctx;
133 }
134
135int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type)
136 {
137 EVP_MD_CTX_init(ctx);
138 return EVP_DigestInit_ex(ctx, type, NULL);
139 }
140
141int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl)
142 {
143 EVP_MD_CTX_clear_flags(ctx,EVP_MD_CTX_FLAG_CLEANED);
144#ifndef OPENSSL_NO_ENGINE
145 /* Whether it's nice or not, "Inits" can be used on "Final"'d contexts
146 * so this context may already have an ENGINE! Try to avoid releasing
147 * the previous handle, re-querying for an ENGINE, and having a
148 * reinitialisation, when it may all be unecessary. */
149 if (ctx->engine && ctx->digest && (!type ||
150 (type && (type->type == ctx->digest->type))))
151 goto skip_to_init;
152 if (type)
153 {
154 /* Ensure an ENGINE left lying around from last time is cleared
155 * (the previous check attempted to avoid this if the same
156 * ENGINE and EVP_MD could be used). */
157 if(ctx->engine)
158 ENGINE_finish(ctx->engine);
159 if(impl)
160 {
161 if (!ENGINE_init(impl))
162 {
163 EVPerr(EVP_F_EVP_DIGESTINIT_EX,EVP_R_INITIALIZATION_ERROR);
164 return 0;
165 }
166 }
167 else
168 /* Ask if an ENGINE is reserved for this job */
169 impl = ENGINE_get_digest_engine(type->type);
170 if(impl)
171 {
172 /* There's an ENGINE for this job ... (apparently) */
173 const EVP_MD *d = ENGINE_get_digest(impl, type->type);
174 if(!d)
175 {
176 /* Same comment from evp_enc.c */
177 EVPerr(EVP_F_EVP_DIGESTINIT_EX,EVP_R_INITIALIZATION_ERROR);
178 ENGINE_finish(impl);
179 return 0;
180 }
181 /* We'll use the ENGINE's private digest definition */
182 type = d;
183 /* Store the ENGINE functional reference so we know
184 * 'type' came from an ENGINE and we need to release
185 * it when done. */
186 ctx->engine = impl;
187 }
188 else
189 ctx->engine = NULL;
190 }
191 else
192 if(!ctx->digest)
193 {
194 EVPerr(EVP_F_EVP_DIGESTINIT_EX,EVP_R_NO_DIGEST_SET);
195 return 0;
196 }
197#endif
198 if (ctx->digest != type)
199 {
200 if (ctx->digest && ctx->digest->ctx_size)
201 OPENSSL_free(ctx->md_data);
202 ctx->digest=type;
203 if (!(ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) && type->ctx_size)
204 {
205 ctx->update = type->update;
206 ctx->md_data=OPENSSL_malloc(type->ctx_size);
207 if (ctx->md_data == NULL)
208 {
209 EVPerr(EVP_F_EVP_DIGESTINIT_EX,
210 ERR_R_MALLOC_FAILURE);
211 return 0;
212 }
213 }
214 }
215#ifndef OPENSSL_NO_ENGINE
216skip_to_init:
217#endif
218 if (ctx->pctx)
219 {
220 int r;
221 r = EVP_PKEY_CTX_ctrl(ctx->pctx, -1, EVP_PKEY_OP_TYPE_SIG,
222 EVP_PKEY_CTRL_DIGESTINIT, 0, ctx);
223 if (r <= 0 && (r != -2))
224 return 0;
225 }
226 if (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT)
227 return 1;
228 return ctx->digest->init(ctx);
229 }
230
231int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data, size_t count)
232 {
233 return ctx->update(ctx,data,count);
234 }
235
236/* The caller can assume that this removes any secret data from the context */
237int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size)
238 {
239 int ret;
240 ret = EVP_DigestFinal_ex(ctx, md, size);
241 EVP_MD_CTX_cleanup(ctx);
242 return ret;
243 }
244
245/* The caller can assume that this removes any secret data from the context */
246int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size)
247 {
248 int ret;
249
250 OPENSSL_assert(ctx->digest->md_size <= EVP_MAX_MD_SIZE);
251 ret=ctx->digest->final(ctx,md);
252 if (size != NULL)
253 *size=ctx->digest->md_size;
254 if (ctx->digest->cleanup)
255 {
256 ctx->digest->cleanup(ctx);
257 EVP_MD_CTX_set_flags(ctx,EVP_MD_CTX_FLAG_CLEANED);
258 }
259 memset(ctx->md_data,0,ctx->digest->ctx_size);
260 return ret;
261 }
262
263int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in)
264 {
265 EVP_MD_CTX_init(out);
266 return EVP_MD_CTX_copy_ex(out, in);
267 }
268
269int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in)
270 {
271 unsigned char *tmp_buf;
272 if ((in == NULL) || (in->digest == NULL))
273 {
274 EVPerr(EVP_F_EVP_MD_CTX_COPY_EX,EVP_R_INPUT_NOT_INITIALIZED);
275 return 0;
276 }
277#ifndef OPENSSL_NO_ENGINE
278 /* Make sure it's safe to copy a digest context using an ENGINE */
279 if (in->engine && !ENGINE_init(in->engine))
280 {
281 EVPerr(EVP_F_EVP_MD_CTX_COPY_EX,ERR_R_ENGINE_LIB);
282 return 0;
283 }
284#endif
285
286 if (out->digest == in->digest)
287 {
288 tmp_buf = out->md_data;
289 EVP_MD_CTX_set_flags(out,EVP_MD_CTX_FLAG_REUSE);
290 }
291 else tmp_buf = NULL;
292 EVP_MD_CTX_cleanup(out);
293 memcpy(out,in,sizeof *out);
294
295 if (in->md_data && out->digest->ctx_size)
296 {
297 if (tmp_buf)
298 out->md_data = tmp_buf;
299 else
300 {
301 out->md_data=OPENSSL_malloc(out->digest->ctx_size);
302 if (!out->md_data)
303 {
304 EVPerr(EVP_F_EVP_MD_CTX_COPY_EX,ERR_R_MALLOC_FAILURE);
305 return 0;
306 }
307 }
308 memcpy(out->md_data,in->md_data,out->digest->ctx_size);
309 }
310
311 out->update = in->update;
312
313 if (in->pctx)
314 {
315 out->pctx = EVP_PKEY_CTX_dup(in->pctx);
316 if (!out->pctx)
317 {
318 EVP_MD_CTX_cleanup(out);
319 return 0;
320 }
321 }
322
323 if (out->digest->copy)
324 return out->digest->copy(out,in);
325
326 return 1;
327 }
328
329int EVP_Digest(const void *data, size_t count,
330 unsigned char *md, unsigned int *size, const EVP_MD *type, ENGINE *impl)
331 {
332 EVP_MD_CTX ctx;
333 int ret;
334
335 EVP_MD_CTX_init(&ctx);
336 EVP_MD_CTX_set_flags(&ctx,EVP_MD_CTX_FLAG_ONESHOT);
337 ret=EVP_DigestInit_ex(&ctx, type, impl)
338 && EVP_DigestUpdate(&ctx, data, count)
339 && EVP_DigestFinal_ex(&ctx, md, size);
340 EVP_MD_CTX_cleanup(&ctx);
341
342 return ret;
343 }
344
345void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx)
346 {
347 EVP_MD_CTX_cleanup(ctx);
348 OPENSSL_free(ctx);
349 }
350
351/* This call frees resources associated with the context */
352int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx)
353 {
354 /* Don't assume ctx->md_data was cleaned in EVP_Digest_Final,
355 * because sometimes only copies of the context are ever finalised.
356 */
357 if (ctx->digest && ctx->digest->cleanup
358 && !EVP_MD_CTX_test_flags(ctx,EVP_MD_CTX_FLAG_CLEANED))
359 ctx->digest->cleanup(ctx);
360 if (ctx->digest && ctx->digest->ctx_size && ctx->md_data
361 && !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_REUSE))
362 {
363 OPENSSL_cleanse(ctx->md_data,ctx->digest->ctx_size);
364 OPENSSL_free(ctx->md_data);
365 }
366 if (ctx->pctx)
367 EVP_PKEY_CTX_free(ctx->pctx);
368#ifndef OPENSSL_NO_ENGINE
369 if(ctx->engine)
370 /* The EVP_MD we used belongs to an ENGINE, release the
371 * functional reference we held for this reason. */
372 ENGINE_finish(ctx->engine);
373#endif
374 memset(ctx,'\0',sizeof *ctx);
375
376 return 1;
377 }
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-03-21 05:15:54 +0000