[331] | 1 | /*
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| 2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include "internal/cryptlib.h"
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| 12 |
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| 13 | #include <openssl/evp.h>
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| 14 | #include <openssl/objects.h>
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| 15 | #include <openssl/sha.h>
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| 16 | #include <openssl/rsa.h>
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| 17 | #include "internal/evp_int.h"
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| 18 |
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| 19 | static int init(EVP_MD_CTX *ctx)
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| 20 | {
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| 21 | return SHA1_Init(EVP_MD_CTX_md_data(ctx));
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| 22 | }
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| 23 |
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| 24 | static int update(EVP_MD_CTX *ctx, const void *data, size_t count)
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| 25 | {
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| 26 | return SHA1_Update(EVP_MD_CTX_md_data(ctx), data, count);
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| 27 | }
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| 28 |
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| 29 | static int final(EVP_MD_CTX *ctx, unsigned char *md)
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| 30 | {
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| 31 | return SHA1_Final(md, EVP_MD_CTX_md_data(ctx));
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| 32 | }
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| 33 |
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| 34 | static int ctrl(EVP_MD_CTX *ctx, int cmd, int mslen, void *ms)
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| 35 | {
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| 36 | unsigned char padtmp[40];
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| 37 | unsigned char sha1tmp[SHA_DIGEST_LENGTH];
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| 38 |
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| 39 | SHA_CTX *sha1;
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| 40 |
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| 41 | if (cmd != EVP_CTRL_SSL3_MASTER_SECRET)
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| 42 | return -2;
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| 43 |
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| 44 | if (ctx == NULL)
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| 45 | return 0;
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| 46 |
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| 47 | sha1 = EVP_MD_CTX_md_data(ctx);
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| 48 |
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| 49 | /* SSLv3 client auth handling: see RFC-6101 5.6.8 */
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| 50 | if (mslen != 48)
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| 51 | return 0;
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| 52 |
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| 53 | /* At this point hash contains all handshake messages, update
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| 54 | * with master secret and pad_1.
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| 55 | */
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| 56 |
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| 57 | if (SHA1_Update(sha1, ms, mslen) <= 0)
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| 58 | return 0;
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| 59 |
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| 60 | /* Set padtmp to pad_1 value */
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| 61 | memset(padtmp, 0x36, sizeof(padtmp));
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| 62 |
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| 63 | if (!SHA1_Update(sha1, padtmp, sizeof(padtmp)))
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| 64 | return 0;
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| 65 |
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| 66 | if (!SHA1_Final(sha1tmp, sha1))
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| 67 | return 0;
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| 68 |
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| 69 | /* Reinitialise context */
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| 70 |
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| 71 | if (!SHA1_Init(sha1))
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| 72 | return 0;
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| 73 |
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| 74 | if (SHA1_Update(sha1, ms, mslen) <= 0)
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| 75 | return 0;
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| 76 |
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| 77 | /* Set padtmp to pad_2 value */
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| 78 | memset(padtmp, 0x5c, sizeof(padtmp));
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| 79 |
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| 80 | if (!SHA1_Update(sha1, padtmp, sizeof(padtmp)))
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| 81 | return 0;
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| 82 |
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| 83 | if (!SHA1_Update(sha1, sha1tmp, sizeof(sha1tmp)))
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| 84 | return 0;
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| 85 |
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| 86 | /* Now when ctx is finalised it will return the SSL v3 hash value */
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| 87 | OPENSSL_cleanse(sha1tmp, sizeof(sha1tmp));
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| 88 |
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| 89 | return 1;
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| 90 |
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| 91 | }
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| 92 |
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| 93 | static const EVP_MD sha1_md = {
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| 94 | NID_sha1,
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| 95 | NID_sha1WithRSAEncryption,
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| 96 | SHA_DIGEST_LENGTH,
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| 97 | EVP_MD_FLAG_DIGALGID_ABSENT,
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| 98 | init,
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| 99 | update,
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| 100 | final,
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| 101 | NULL,
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| 102 | NULL,
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| 103 | SHA_CBLOCK,
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| 104 | sizeof(EVP_MD *) + sizeof(SHA_CTX),
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| 105 | ctrl
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| 106 | };
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| 107 |
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| 108 | const EVP_MD *EVP_sha1(void)
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| 109 | {
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| 110 | return (&sha1_md);
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| 111 | }
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| 112 |
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| 113 | static int init224(EVP_MD_CTX *ctx)
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| 114 | {
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| 115 | return SHA224_Init(EVP_MD_CTX_md_data(ctx));
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| 116 | }
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| 117 |
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| 118 | static int init256(EVP_MD_CTX *ctx)
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| 119 | {
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| 120 | return SHA256_Init(EVP_MD_CTX_md_data(ctx));
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| 121 | }
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| 122 |
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| 123 | /*
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| 124 | * Even though there're separate SHA224_[Update|Final], we call
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| 125 | * SHA256 functions even in SHA224 context. This is what happens
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| 126 | * there anyway, so we can spare few CPU cycles:-)
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| 127 | */
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| 128 | static int update256(EVP_MD_CTX *ctx, const void *data, size_t count)
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| 129 | {
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| 130 | return SHA256_Update(EVP_MD_CTX_md_data(ctx), data, count);
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| 131 | }
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| 132 |
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| 133 | static int final256(EVP_MD_CTX *ctx, unsigned char *md)
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| 134 | {
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| 135 | return SHA256_Final(md, EVP_MD_CTX_md_data(ctx));
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| 136 | }
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| 137 |
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| 138 | static const EVP_MD sha224_md = {
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| 139 | NID_sha224,
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| 140 | NID_sha224WithRSAEncryption,
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| 141 | SHA224_DIGEST_LENGTH,
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| 142 | EVP_MD_FLAG_DIGALGID_ABSENT,
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| 143 | init224,
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| 144 | update256,
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| 145 | final256,
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| 146 | NULL,
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| 147 | NULL,
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| 148 | SHA256_CBLOCK,
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| 149 | sizeof(EVP_MD *) + sizeof(SHA256_CTX),
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| 150 | };
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| 151 |
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| 152 | const EVP_MD *EVP_sha224(void)
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| 153 | {
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| 154 | return (&sha224_md);
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| 155 | }
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| 156 |
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| 157 | static const EVP_MD sha256_md = {
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| 158 | NID_sha256,
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| 159 | NID_sha256WithRSAEncryption,
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| 160 | SHA256_DIGEST_LENGTH,
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| 161 | EVP_MD_FLAG_DIGALGID_ABSENT,
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| 162 | init256,
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| 163 | update256,
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| 164 | final256,
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| 165 | NULL,
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| 166 | NULL,
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| 167 | SHA256_CBLOCK,
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| 168 | sizeof(EVP_MD *) + sizeof(SHA256_CTX),
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| 169 | };
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| 170 |
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| 171 | const EVP_MD *EVP_sha256(void)
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| 172 | {
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| 173 | return (&sha256_md);
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| 174 | }
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| 175 |
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| 176 | static int init384(EVP_MD_CTX *ctx)
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| 177 | {
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| 178 | return SHA384_Init(EVP_MD_CTX_md_data(ctx));
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| 179 | }
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| 180 |
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| 181 | static int init512(EVP_MD_CTX *ctx)
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| 182 | {
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| 183 | return SHA512_Init(EVP_MD_CTX_md_data(ctx));
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| 184 | }
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| 185 |
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| 186 | /* See comment in SHA224/256 section */
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| 187 | static int update512(EVP_MD_CTX *ctx, const void *data, size_t count)
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| 188 | {
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| 189 | return SHA512_Update(EVP_MD_CTX_md_data(ctx), data, count);
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| 190 | }
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| 191 |
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| 192 | static int final512(EVP_MD_CTX *ctx, unsigned char *md)
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| 193 | {
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| 194 | return SHA512_Final(md, EVP_MD_CTX_md_data(ctx));
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| 195 | }
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| 196 |
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| 197 | static const EVP_MD sha384_md = {
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| 198 | NID_sha384,
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| 199 | NID_sha384WithRSAEncryption,
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| 200 | SHA384_DIGEST_LENGTH,
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| 201 | EVP_MD_FLAG_DIGALGID_ABSENT,
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| 202 | init384,
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| 203 | update512,
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| 204 | final512,
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| 205 | NULL,
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| 206 | NULL,
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| 207 | SHA512_CBLOCK,
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| 208 | sizeof(EVP_MD *) + sizeof(SHA512_CTX),
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| 209 | };
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| 210 |
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| 211 | const EVP_MD *EVP_sha384(void)
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| 212 | {
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| 213 | return (&sha384_md);
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| 214 | }
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| 215 |
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| 216 | static const EVP_MD sha512_md = {
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| 217 | NID_sha512,
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| 218 | NID_sha512WithRSAEncryption,
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| 219 | SHA512_DIGEST_LENGTH,
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| 220 | EVP_MD_FLAG_DIGALGID_ABSENT,
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| 221 | init512,
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| 222 | update512,
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| 223 | final512,
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| 224 | NULL,
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| 225 | NULL,
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| 226 | SHA512_CBLOCK,
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| 227 | sizeof(EVP_MD *) + sizeof(SHA512_CTX),
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| 228 | };
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| 229 |
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| 230 | const EVP_MD *EVP_sha512(void)
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| 231 | {
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| 232 | return (&sha512_md);
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| 233 | }
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