Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame^] | 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/md5.h> |
| 60 | #include <openssl/obj.h> |
| 61 | #include <openssl/sha.h> |
| 62 | |
| 63 | #include "internal.h" |
| 64 | |
| 65 | |
| 66 | static int md5_init(EVP_MD_CTX *ctx) { return MD5_Init(ctx->md_data); } |
| 67 | |
| 68 | static int md5_update(EVP_MD_CTX *ctx, const void *data, size_t count) { |
| 69 | return MD5_Update(ctx->md_data, data, count); |
| 70 | } |
| 71 | |
| 72 | static int md5_final(EVP_MD_CTX *ctx, unsigned char *out) { |
| 73 | return MD5_Final(out, ctx->md_data); |
| 74 | } |
| 75 | |
| 76 | static const EVP_MD md5_md = { |
| 77 | NID_md5, MD5_DIGEST_LENGTH, 0 /* flags */, md5_init, |
| 78 | md5_update, md5_final, 64 /* block size */, sizeof(MD5_CTX), |
| 79 | }; |
| 80 | |
| 81 | const EVP_MD *EVP_md5(void) { return &md5_md; } |
| 82 | |
| 83 | |
| 84 | static int sha1_init(EVP_MD_CTX *ctx) { return SHA1_Init(ctx->md_data); } |
| 85 | |
| 86 | static int sha1_update(EVP_MD_CTX *ctx, const void *data, size_t count) { |
| 87 | return SHA1_Update(ctx->md_data, data, count); |
| 88 | } |
| 89 | |
| 90 | static int sha1_final(EVP_MD_CTX *ctx, unsigned char *md) { |
| 91 | return SHA1_Final(md, ctx->md_data); |
| 92 | } |
| 93 | |
| 94 | static const EVP_MD sha1_md = { |
| 95 | NID_sha1, SHA_DIGEST_LENGTH, 0 /* flags */, sha1_init, |
| 96 | sha1_update, sha1_final, 64 /* block size */, sizeof(SHA_CTX), |
| 97 | }; |
| 98 | |
| 99 | const EVP_MD *EVP_sha1(void) { return &sha1_md; } |
| 100 | |
| 101 | |
| 102 | static int sha224_init(EVP_MD_CTX *ctx) { return SHA224_Init(ctx->md_data); } |
| 103 | |
| 104 | static int sha224_update(EVP_MD_CTX *ctx, const void *data, size_t count) { |
| 105 | return SHA224_Update(ctx->md_data, data, count); |
| 106 | } |
| 107 | |
| 108 | static int sha224_final(EVP_MD_CTX *ctx, unsigned char *md) { |
| 109 | return SHA224_Final(md, ctx->md_data); |
| 110 | } |
| 111 | |
| 112 | static const EVP_MD sha224_md = { |
| 113 | NID_sha224, SHA224_DIGEST_LENGTH, 0 /* flags */, |
| 114 | sha224_init, sha224_update, sha224_final, |
| 115 | 64 /* block size */, sizeof(SHA256_CTX), |
| 116 | }; |
| 117 | |
| 118 | const EVP_MD *EVP_sha224(void) { return &sha224_md; } |
| 119 | |
| 120 | |
| 121 | static int sha256_init(EVP_MD_CTX *ctx) { return SHA256_Init(ctx->md_data); } |
| 122 | |
| 123 | static int sha256_update(EVP_MD_CTX *ctx, const void *data, size_t count) { |
| 124 | return SHA256_Update(ctx->md_data, data, count); |
| 125 | } |
| 126 | |
| 127 | static int sha256_final(EVP_MD_CTX *ctx, unsigned char *md) { |
| 128 | return SHA256_Final(md, ctx->md_data); |
| 129 | } |
| 130 | |
| 131 | static const EVP_MD sha256_md = { |
| 132 | NID_sha256, SHA256_DIGEST_LENGTH, 0 /* flags */, |
| 133 | sha256_init, sha256_update, sha256_final, |
| 134 | 64 /* block size */, sizeof(SHA256_CTX), |
| 135 | }; |
| 136 | |
| 137 | const EVP_MD *EVP_sha256(void) { return &sha256_md; } |
| 138 | |
| 139 | |
| 140 | static int sha384_init(EVP_MD_CTX *ctx) { return SHA384_Init(ctx->md_data); } |
| 141 | |
| 142 | static int sha384_update(EVP_MD_CTX *ctx, const void *data, size_t count) { |
| 143 | return SHA384_Update(ctx->md_data, data, count); |
| 144 | } |
| 145 | |
| 146 | static int sha384_final(EVP_MD_CTX *ctx, unsigned char *md) { |
| 147 | return SHA384_Final(md, ctx->md_data); |
| 148 | } |
| 149 | |
| 150 | static const EVP_MD sha384_md = { |
| 151 | NID_sha384, SHA384_DIGEST_LENGTH, 0 /* flags */, |
| 152 | sha384_init, sha384_update, sha384_final, |
| 153 | 128 /* block size */, sizeof(SHA512_CTX), |
| 154 | }; |
| 155 | |
| 156 | const EVP_MD *EVP_sha384(void) { return &sha384_md; } |
| 157 | |
| 158 | |
| 159 | static int sha512_init(EVP_MD_CTX *ctx) { return SHA512_Init(ctx->md_data); } |
| 160 | |
| 161 | static int sha512_update(EVP_MD_CTX *ctx, const void *data, size_t count) { |
| 162 | return SHA512_Update(ctx->md_data, data, count); |
| 163 | } |
| 164 | |
| 165 | static int sha512_final(EVP_MD_CTX *ctx, unsigned char *md) { |
| 166 | return SHA512_Final(md, ctx->md_data); |
| 167 | } |
| 168 | |
| 169 | static const EVP_MD sha512_md = { |
| 170 | NID_sha512, SHA512_DIGEST_LENGTH, 0 /* flags */, |
| 171 | sha512_init, sha512_update, sha512_final, |
| 172 | 128 /* block size */, sizeof(SHA512_CTX), |
| 173 | }; |
| 174 | |
| 175 | const EVP_MD *EVP_sha512(void) { return &sha512_md; } |
| 176 | |
| 177 | struct nid_to_digest { |
| 178 | int nid; |
| 179 | const EVP_MD *(*md_func)(); |
| 180 | }; |
| 181 | |
| 182 | static const struct nid_to_digest nid_to_digest_mapping[] = { |
| 183 | { NID_md5, EVP_md5 }, |
| 184 | { NID_sha1, EVP_sha1 }, |
| 185 | { NID_sha224, EVP_sha224 }, |
| 186 | { NID_sha256, EVP_sha256 }, |
| 187 | { NID_sha384, EVP_sha384 }, |
| 188 | { NID_sha512, EVP_sha512 }, |
| 189 | { NID_dsaWithSHA, EVP_sha1 }, |
| 190 | { NID_dsaWithSHA1, EVP_sha1 }, |
| 191 | { NID_ecdsa_with_SHA1, EVP_sha1 }, |
| 192 | { NID_md5WithRSAEncryption, EVP_md5 }, |
| 193 | { NID_sha1WithRSAEncryption, EVP_sha1 }, |
| 194 | { NID_sha224WithRSAEncryption, EVP_sha224 }, |
| 195 | { NID_sha256WithRSAEncryption, EVP_sha256 }, |
| 196 | { NID_sha384WithRSAEncryption, EVP_sha384 }, |
| 197 | { NID_sha512WithRSAEncryption, EVP_sha512 }, |
| 198 | }; |
| 199 | |
| 200 | const EVP_MD* EVP_get_digestbynid(int nid) { |
| 201 | unsigned i; |
| 202 | |
| 203 | for (i = 0; i < sizeof(nid_to_digest_mapping) / sizeof(struct nid_to_digest); |
| 204 | i++) { |
| 205 | if (nid_to_digest_mapping[i].nid == nid) { |
| 206 | return nid_to_digest_mapping[i].md_func(); |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | return NULL; |
| 211 | } |
| 212 | |
| 213 | const EVP_MD* EVP_get_digestbyobj(const ASN1_OBJECT *obj) { |
| 214 | return EVP_get_digestbynid(OBJ_obj2nid(obj)); |
| 215 | } |