crypto/evp/legacy_sha.c

   1 /*
   2  * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <openssl/sha.h>         /* diverse SHA macros */
  11 #include "internal/sha3.h"       /* KECCAK1600_WIDTH */
  12 #include "crypto/evp.h"
  13 /* Used by legacy methods */
  14 #include "crypto/sha.h"
  15 #include "legacy_meth.h"
  16 #include "evp_local.h"
  17
  18 /*-
  19  * LEGACY methods for SHA.
  20  * These only remain to support engines that can get these methods.
  21  * Hardware support for SHA3 has been removed from these legacy cases.
  22  */
  23 #define IMPLEMENT_LEGACY_EVP_MD_METH_SHA3(nm, fn, tag)                         \
  24 static int nm##_init(EVP_MD_CTX *ctx)                                          \
  25 {                                                                              \
  26     return fn##_init(EVP_MD_CTX_md_data(ctx), tag, ctx->digest->md_size * 8);  \
  27 }                                                                              \
  28 static int nm##_update(EVP_MD_CTX *ctx, const void *data, size_t count)        \
  29 {                                                                              \
  30     return fn##_update(EVP_MD_CTX_md_data(ctx), data, count);                  \
  31 }                                                                              \
  32 static int nm##_final(EVP_MD_CTX *ctx, unsigned char *md)                      \
  33 {                                                                              \
  34     return fn##_final(md, EVP_MD_CTX_md_data(ctx));                            \
  35 }
  36 #define IMPLEMENT_LEGACY_EVP_MD_METH_SHAKE(nm, fn, tag)                        \
  37 static int nm##_init(EVP_MD_CTX *ctx)                                          \
  38 {                                                                              \
  39     return fn##_init(EVP_MD_CTX_md_data(ctx), tag, ctx->digest->md_size * 8);  \
  40 }                                                                              \
  41
  42 #define sha512_224_Init    sha512_224_init
  43 #define sha512_256_Init    sha512_256_init
  44
  45 #define sha512_224_Update  SHA512_Update
  46 #define sha512_224_Final   SHA512_Final
  47 #define sha512_256_Update  SHA512_Update
  48 #define sha512_256_Final   SHA512_Final
  49
  50 IMPLEMENT_LEGACY_EVP_MD_METH(sha1, SHA1)
  51 IMPLEMENT_LEGACY_EVP_MD_METH(sha224, SHA224)
  52 IMPLEMENT_LEGACY_EVP_MD_METH(sha256, SHA256)
  53 IMPLEMENT_LEGACY_EVP_MD_METH(sha384, SHA384)
  54 IMPLEMENT_LEGACY_EVP_MD_METH(sha512, SHA512)
  55 IMPLEMENT_LEGACY_EVP_MD_METH(sha512_224_int, sha512_224)
  56 IMPLEMENT_LEGACY_EVP_MD_METH(sha512_256_int, sha512_256)
  57 IMPLEMENT_LEGACY_EVP_MD_METH_SHA3(sha3_int, sha3, '\x06')
  58 IMPLEMENT_LEGACY_EVP_MD_METH_SHAKE(shake, sha3, '\x1f')
  59
  60 static int sha1_int_ctrl(EVP_MD_CTX *ctx, int cmd, int p1, void *p2)
  61 {
  62     return sha1_ctrl(ctx != NULL ? EVP_MD_CTX_md_data(ctx) : NULL, cmd, p1, p2);
  63 }
  64
  65 static int shake_ctrl(EVP_MD_CTX *evp_ctx, int cmd, int p1, void *p2)
  66 {
  67     KECCAK1600_CTX *ctx = evp_ctx->md_data;
  68
  69     switch (cmd) {
  70     case EVP_MD_CTRL_XOF_LEN:
  71         ctx->md_size = p1;
  72         return 1;
  73     default:
  74         return 0;
  75     }
  76 }
  77
  78
  79
  80 static const EVP_MD sha1_md = {
  81     NID_sha1,
  82     NID_sha1WithRSAEncryption,
  83     SHA_DIGEST_LENGTH,
  84     EVP_MD_FLAG_DIGALGID_ABSENT,
  85     LEGACY_EVP_MD_METH_TABLE(sha1_init, sha1_update, sha1_final, sha1_int_ctrl,
  86                              SHA_CBLOCK),
  87 };
  88
  89 const EVP_MD *EVP_sha1(void)
  90 {
  91     return &sha1_md;
  92 }
  93
  94 static const EVP_MD sha224_md = {
  95     NID_sha224,
  96     NID_sha224WithRSAEncryption,
  97     SHA224_DIGEST_LENGTH,
  98     EVP_MD_FLAG_DIGALGID_ABSENT,
  99     LEGACY_EVP_MD_METH_TABLE(sha224_init, sha224_update, sha224_final, NULL,
 100                              SHA256_CBLOCK),
 101 };
 102
 103 const EVP_MD *EVP_sha224(void)
 104 {
 105     return &sha224_md;
 106 }
 107
 108 static const EVP_MD sha256_md = {
 109     NID_sha256,
 110     NID_sha256WithRSAEncryption,
 111     SHA256_DIGEST_LENGTH,
 112     EVP_MD_FLAG_DIGALGID_ABSENT,
 113     LEGACY_EVP_MD_METH_TABLE(sha256_init, sha256_update, sha256_final, NULL,
 114                              SHA256_CBLOCK),
 115 };
 116
 117 const EVP_MD *EVP_sha256(void)
 118 {
 119     return &sha256_md;
 120 }
 121
 122 static const EVP_MD sha512_224_md = {
 123     NID_sha512_224,
 124     NID_sha512_224WithRSAEncryption,
 125     SHA224_DIGEST_LENGTH,
 126     EVP_MD_FLAG_DIGALGID_ABSENT,
 127     LEGACY_EVP_MD_METH_TABLE(sha512_224_int_init, sha512_224_int_update,
 128                              sha512_224_int_final, NULL, SHA512_CBLOCK),
 129 };
 130
 131 const EVP_MD *EVP_sha512_224(void)
 132 {
 133     return &sha512_224_md;
 134 }
 135
 136 static const EVP_MD sha512_256_md = {
 137     NID_sha512_256,
 138     NID_sha512_256WithRSAEncryption,
 139     SHA256_DIGEST_LENGTH,
 140     EVP_MD_FLAG_DIGALGID_ABSENT,
 141     LEGACY_EVP_MD_METH_TABLE(sha512_256_int_init, sha512_256_int_update,
 142                              sha512_256_int_final, NULL, SHA512_CBLOCK),
 143 };
 144
 145 const EVP_MD *EVP_sha512_256(void)
 146 {
 147     return &sha512_256_md;
 148 }
 149
 150 static const EVP_MD sha384_md = {
 151     NID_sha384,
 152     NID_sha384WithRSAEncryption,
 153     SHA384_DIGEST_LENGTH,
 154     EVP_MD_FLAG_DIGALGID_ABSENT,
 155     LEGACY_EVP_MD_METH_TABLE(sha384_init, sha384_update, sha384_final, NULL,
 156                              SHA512_CBLOCK),
 157 };
 158
 159 const EVP_MD *EVP_sha384(void)
 160 {
 161     return &sha384_md;
 162 }
 163
 164 static const EVP_MD sha512_md = {
 165     NID_sha512,
 166     NID_sha512WithRSAEncryption,
 167     SHA512_DIGEST_LENGTH,
 168     EVP_MD_FLAG_DIGALGID_ABSENT,
 169     LEGACY_EVP_MD_METH_TABLE(sha512_init, sha512_update, sha512_final, NULL,
 170                              SHA512_CBLOCK),
 171 };
 172
 173 const EVP_MD *EVP_sha512(void)
 174 {
 175     return &sha512_md;
 176 }
 177
 178 #define EVP_MD_SHA3(bitlen)                                                    \
 179 const EVP_MD *EVP_sha3_##bitlen(void)                                          \
 180 {                                                                              \
 181     static const EVP_MD sha3_##bitlen##_md = {                                 \
 182         NID_sha3_##bitlen,                                                     \
 183         NID_RSA_SHA3_##bitlen,                                                 \
 184         bitlen / 8,                                                            \
 185         EVP_MD_FLAG_DIGALGID_ABSENT,                                           \
 186         LEGACY_EVP_MD_METH_TABLE(sha3_int_init, sha3_int_update,               \
 187                                  sha3_int_final, NULL,                         \
 188                                  (KECCAK1600_WIDTH - bitlen * 2) / 8),         \
 189     };                                                                         \
 190     return &sha3_##bitlen##_md;                                                \
 191 }
 192 #define EVP_MD_SHAKE(bitlen)                                                   \
 193 const EVP_MD *EVP_shake##bitlen(void)                                          \
 194 {                                                                              \
 195     static const EVP_MD shake##bitlen##_md = {                                 \
 196         NID_shake##bitlen,                                                     \
 197         0,                                                                     \
 198         bitlen / 8,                                                            \
 199         EVP_MD_FLAG_XOF,                                                       \
 200         LEGACY_EVP_MD_METH_TABLE(shake_init, sha3_int_update, sha3_int_final,  \
 201                         shake_ctrl, (KECCAK1600_WIDTH - bitlen * 2) / 8),      \
 202     };                                                                         \
 203     return &shake##bitlen##_md;                                                \
 204 }
 205
 206 EVP_MD_SHA3(224)
 207 EVP_MD_SHA3(256)
 208 EVP_MD_SHA3(384)
 209 EVP_MD_SHA3(512)
 210
 211 EVP_MD_SHAKE(128)
 212 EVP_MD_SHAKE(256)