1/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
7 *
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to.  The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
14 *
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 * 1. Redistributions of source code must retain the copyright
26 *    notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 *    notice, this list of conditions and the following disclaimer in the
29 *    documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 *    must display the following acknowledgement:
32 *    "This product includes cryptographic software written by
33 *     Eric Young (eay@cryptsoft.com)"
34 *    The word 'cryptographic' can be left out if the rouines from the library
35 *    being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 *    the apps directory (application code) you must include an acknowledgement:
38 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 *
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed.  i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.] */
56
57#include <openssl/digest.h>
58
59#include <openssl/md4.h>
60#include <openssl/md5.h>
61#include <openssl/obj.h>
62#include <openssl/sha.h>
63
64#include "internal.h"
65
66
67static int md4_init(EVP_MD_CTX *ctx) { return MD4_Init(ctx->md_data); }
68
69static int md4_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
70  return MD4_Update(ctx->md_data, data, count);
71}
72
73static int md4_final(EVP_MD_CTX *ctx, unsigned char *out) {
74  return MD4_Final(out, ctx->md_data);
75}
76
77static const EVP_MD md4_md = {
78    NID_md4,    MD4_DIGEST_LENGTH, 0 /* flags */,       md4_init,
79    md4_update, md4_final,         64 /* block size */, sizeof(MD4_CTX),
80};
81
82const EVP_MD *EVP_md4(void) { return &md4_md; }
83
84
85static int md5_init(EVP_MD_CTX *ctx) { return MD5_Init(ctx->md_data); }
86
87static int md5_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
88  return MD5_Update(ctx->md_data, data, count);
89}
90
91static int md5_final(EVP_MD_CTX *ctx, unsigned char *out) {
92  return MD5_Final(out, ctx->md_data);
93}
94
95static const EVP_MD md5_md = {
96    NID_md5,    MD5_DIGEST_LENGTH, 0 /* flags */,       md5_init,
97    md5_update, md5_final,         64 /* block size */, sizeof(MD5_CTX),
98};
99
100const EVP_MD *EVP_md5(void) { return &md5_md; }
101
102
103static int sha1_init(EVP_MD_CTX *ctx) { return SHA1_Init(ctx->md_data); }
104
105static int sha1_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
106  return SHA1_Update(ctx->md_data, data, count);
107}
108
109static int sha1_final(EVP_MD_CTX *ctx, unsigned char *md) {
110  return SHA1_Final(md, ctx->md_data);
111}
112
113static const EVP_MD sha1_md = {
114    NID_sha1,    SHA_DIGEST_LENGTH, 0 /* flags */,       sha1_init,
115    sha1_update, sha1_final,        64 /* block size */, sizeof(SHA_CTX),
116};
117
118const EVP_MD *EVP_sha1(void) { return &sha1_md; }
119
120
121static int sha224_init(EVP_MD_CTX *ctx) { return SHA224_Init(ctx->md_data); }
122
123static int sha224_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
124  return SHA224_Update(ctx->md_data, data, count);
125}
126
127static int sha224_final(EVP_MD_CTX *ctx, unsigned char *md) {
128  return SHA224_Final(md, ctx->md_data);
129}
130
131static const EVP_MD sha224_md = {
132    NID_sha224,          SHA224_DIGEST_LENGTH, 0 /* flags */,
133    sha224_init,         sha224_update,        sha224_final,
134    64 /* block size */, sizeof(SHA256_CTX),
135};
136
137const EVP_MD *EVP_sha224(void) { return &sha224_md; }
138
139
140static int sha256_init(EVP_MD_CTX *ctx) { return SHA256_Init(ctx->md_data); }
141
142static int sha256_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
143  return SHA256_Update(ctx->md_data, data, count);
144}
145
146static int sha256_final(EVP_MD_CTX *ctx, unsigned char *md) {
147  return SHA256_Final(md, ctx->md_data);
148}
149
150static const EVP_MD sha256_md = {
151    NID_sha256,          SHA256_DIGEST_LENGTH, 0 /* flags */,
152    sha256_init,         sha256_update,        sha256_final,
153    64 /* block size */, sizeof(SHA256_CTX),
154};
155
156const EVP_MD *EVP_sha256(void) { return &sha256_md; }
157
158
159static int sha384_init(EVP_MD_CTX *ctx) { return SHA384_Init(ctx->md_data); }
160
161static int sha384_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
162  return SHA384_Update(ctx->md_data, data, count);
163}
164
165static int sha384_final(EVP_MD_CTX *ctx, unsigned char *md) {
166  return SHA384_Final(md, ctx->md_data);
167}
168
169static const EVP_MD sha384_md = {
170    NID_sha384,           SHA384_DIGEST_LENGTH, 0 /* flags */,
171    sha384_init,          sha384_update,        sha384_final,
172    128 /* block size */, sizeof(SHA512_CTX),
173};
174
175const EVP_MD *EVP_sha384(void) { return &sha384_md; }
176
177
178static int sha512_init(EVP_MD_CTX *ctx) { return SHA512_Init(ctx->md_data); }
179
180static int sha512_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
181  return SHA512_Update(ctx->md_data, data, count);
182}
183
184static int sha512_final(EVP_MD_CTX *ctx, unsigned char *md) {
185  return SHA512_Final(md, ctx->md_data);
186}
187
188static const EVP_MD sha512_md = {
189    NID_sha512,           SHA512_DIGEST_LENGTH, 0 /* flags */,
190    sha512_init,          sha512_update,        sha512_final,
191    128 /* block size */, sizeof(SHA512_CTX),
192};
193
194const EVP_MD *EVP_sha512(void) { return &sha512_md; }
195
196struct nid_to_digest {
197  int nid;
198  const EVP_MD *(*md_func)();
199};
200
201static const struct nid_to_digest nid_to_digest_mapping[] = {
202  { NID_md5, EVP_md5 },
203  { NID_sha1, EVP_sha1 },
204  { NID_sha224, EVP_sha224 },
205  { NID_sha256, EVP_sha256 },
206  { NID_sha384, EVP_sha384 },
207  { NID_sha512, EVP_sha512 },
208  { NID_dsaWithSHA, EVP_sha1 },
209  { NID_dsaWithSHA1, EVP_sha1 },
210  { NID_ecdsa_with_SHA1, EVP_sha1 },
211  { NID_md5WithRSAEncryption, EVP_md5 },
212  { NID_sha1WithRSAEncryption, EVP_sha1 },
213  { NID_sha224WithRSAEncryption, EVP_sha224 },
214  { NID_sha256WithRSAEncryption, EVP_sha256 },
215  { NID_sha384WithRSAEncryption, EVP_sha384 },
216  { NID_sha512WithRSAEncryption, EVP_sha512 },
217};
218
219const EVP_MD* EVP_get_digestbynid(int nid) {
220  unsigned i;
221
222  for (i = 0; i < sizeof(nid_to_digest_mapping) / sizeof(struct nid_to_digest);
223       i++) {
224    if (nid_to_digest_mapping[i].nid == nid) {
225      return nid_to_digest_mapping[i].md_func();
226    }
227  }
228
229  return NULL;
230}
231
232const EVP_MD* EVP_get_digestbyobj(const ASN1_OBJECT *obj) {
233  return EVP_get_digestbynid(OBJ_obj2nid(obj));
234}
235