crypto/evp/legacy_sha.c

   1 /*
   2  * Copyright 2019-2021 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 /*
  11  * All SHA low level APIs are deprecated for public use, but still ok for
  12  * internal use.
  13  */
  14 #include "internal/deprecated.h"
  15
  16 #include <openssl/sha.h>         /* diverse SHA macros */
  17 #include "internal/sha3.h"       /* KECCAK1600_WIDTH */
  18 #include "crypto/evp.h"
  19 /* Used by legacy methods */
  20 #include "crypto/sha.h"
  21 #include "legacy_meth.h"
  22 #include "evp_local.h"
  23
  24 /*-
  25  * LEGACY methods for SHA.
  26  * These only remain to support engines that can get these methods.
  27  * Hardware support for SHA3 has been removed from these legacy cases.
  28  */
  29 #define IMPLEMENT_LEGACY_EVP_MD_METH_SHA3(nm, fn, tag)                         \
  30 static int nm##_init(EVP_MD_CTX *ctx)                                          \
  31 {                                                                              \
  32     return fn##_init(EVP_MD_CTX_md_data(ctx), tag, ctx->digest->md_size * 8);  \
  33 }                                                                              \
  34 static int nm##_update(EVP_MD_CTX *ctx, const void *data, size_t count)        \
  35 {                                                                              \
  36     return fn##_update(EVP_MD_CTX_md_data(ctx), data, count);                  \
  37 }                                                                              \
  38 static int nm##_final(EVP_MD_CTX *ctx, unsigned char *md)                      \
  39 {                                                                              \
  40     return fn##_final(md, EVP_MD_CTX_md_data(ctx));                            \
  41 }
  42 #define IMPLEMENT_LEGACY_EVP_MD_METH_SHAKE(nm, fn, tag)                        \
  43 static int nm##_init(EVP_MD_CTX *ctx)                                          \
  44 {                                                                              \
  45     return fn##_init(EVP_MD_CTX_md_data(ctx), tag, ctx->digest->md_size * 8);  \
  46 }                                                                              \
  47
  48 #define sha512_224_Init    sha512_224_init
  49 #define sha512_256_Init    sha512_256_init
  50
  51 #define sha512_224_Update  SHA512_Update
  52 #define sha512_224_Final   SHA512_Final
  53 #define sha512_256_Update  SHA512_Update
  54 #define sha512_256_Final   SHA512_Final
  55
  56 IMPLEMENT_LEGACY_EVP_MD_METH(sha1, SHA1)
  57 IMPLEMENT_LEGACY_EVP_MD_METH(sha224, SHA224)
  58 IMPLEMENT_LEGACY_EVP_MD_METH(sha256, SHA256)
  59 IMPLEMENT_LEGACY_EVP_MD_METH(sha384, SHA384)
  60 IMPLEMENT_LEGACY_EVP_MD_METH(sha512, SHA512)
  61 IMPLEMENT_LEGACY_EVP_MD_METH(sha512_224_int, sha512_224)
  62 IMPLEMENT_LEGACY_EVP_MD_METH(sha512_256_int, sha512_256)
  63 IMPLEMENT_LEGACY_EVP_MD_METH_SHA3(sha3_int, ossl_sha3, '\x06')
  64 IMPLEMENT_LEGACY_EVP_MD_METH_SHAKE(shake, ossl_sha3, '\x1f')
  65
  66 static int sha1_int_ctrl(EVP_MD_CTX *ctx, int cmd, int p1, void *p2)
  67 {
  68     return ossl_sha1_ctrl(ctx != NULL ? EVP_MD_CTX_md_data(ctx) : NULL,
  69                           cmd, p1, p2);
  70 }
  71
  72 static int shake_ctrl(EVP_MD_CTX *evp_ctx, int cmd, int p1, void *p2)
  73 {
  74     KECCAK1600_CTX *ctx = evp_ctx->md_data;
  75
  76     switch (cmd) {
  77     case EVP_MD_CTRL_XOF_LEN:
  78         ctx->md_size = p1;
  79         return 1;
  80     default:
  81         return 0;
  82     }
  83 }
  84
  85
  86
  87 static const EVP_MD sha1_md = {
  88     NID_sha1,
  89     NID_sha1WithRSAEncryption,
  90     SHA_DIGEST_LENGTH,
  91     EVP_MD_FLAG_DIGALGID_ABSENT,
  92     EVP_ORIG_GLOBAL,
  93     LEGACY_EVP_MD_METH_TABLE(sha1_init, sha1_update, sha1_final, sha1_int_ctrl,
  94                              SHA_CBLOCK),
  95 };
  96
  97 const EVP_MD *EVP_sha1(void)
  98 {
  99     return &sha1_md;
 100 }
 101
 102 static const EVP_MD sha224_md = {
 103     NID_sha224,
 104     NID_sha224WithRSAEncryption,
 105     SHA224_DIGEST_LENGTH,
 106     EVP_MD_FLAG_DIGALGID_ABSENT,
 107     EVP_ORIG_GLOBAL,
 108     LEGACY_EVP_MD_METH_TABLE(sha224_init, sha224_update, sha224_final, NULL,
 109                              SHA256_CBLOCK),
 110 };
 111
 112 const EVP_MD *EVP_sha224(void)
 113 {
 114     return &sha224_md;
 115 }
 116
 117 static const EVP_MD sha256_md = {
 118     NID_sha256,
 119     NID_sha256WithRSAEncryption,
 120     SHA256_DIGEST_LENGTH,
 121     EVP_MD_FLAG_DIGALGID_ABSENT,
 122     EVP_ORIG_GLOBAL,
 123     LEGACY_EVP_MD_METH_TABLE(sha256_init, sha256_update, sha256_final, NULL,
 124                              SHA256_CBLOCK),
 125 };
 126
 127 const EVP_MD *EVP_sha256(void)
 128 {
 129     return &sha256_md;
 130 }
 131
 132 static const EVP_MD sha512_224_md = {
 133     NID_sha512_224,
 134     NID_sha512_224WithRSAEncryption,
 135     SHA224_DIGEST_LENGTH,
 136     EVP_MD_FLAG_DIGALGID_ABSENT,
 137     EVP_ORIG_GLOBAL,
 138     LEGACY_EVP_MD_METH_TABLE(sha512_224_int_init, sha512_224_int_update,
 139                              sha512_224_int_final, NULL, SHA512_CBLOCK),
 140 };
 141
 142 const EVP_MD *EVP_sha512_224(void)
 143 {
 144     return &sha512_224_md;
 145 }
 146
 147 static const EVP_MD sha512_256_md = {
 148     NID_sha512_256,
 149     NID_sha512_256WithRSAEncryption,
 150     SHA256_DIGEST_LENGTH,
 151     EVP_MD_FLAG_DIGALGID_ABSENT,
 152     EVP_ORIG_GLOBAL,
 153     LEGACY_EVP_MD_METH_TABLE(sha512_256_int_init, sha512_256_int_update,
 154                              sha512_256_int_final, NULL, SHA512_CBLOCK),
 155 };
 156
 157 const EVP_MD *EVP_sha512_256(void)
 158 {
 159     return &sha512_256_md;
 160 }
 161
 162 static const EVP_MD sha384_md = {
 163     NID_sha384,
 164     NID_sha384WithRSAEncryption,
 165     SHA384_DIGEST_LENGTH,
 166     EVP_MD_FLAG_DIGALGID_ABSENT,
 167     EVP_ORIG_GLOBAL,
 168     LEGACY_EVP_MD_METH_TABLE(sha384_init, sha384_update, sha384_final, NULL,
 169                              SHA512_CBLOCK),
 170 };
 171
 172 const EVP_MD *EVP_sha384(void)
 173 {
 174     return &sha384_md;
 175 }
 176
 177 static const EVP_MD sha512_md = {
 178     NID_sha512,
 179     NID_sha512WithRSAEncryption,
 180     SHA512_DIGEST_LENGTH,
 181     EVP_MD_FLAG_DIGALGID_ABSENT,
 182     EVP_ORIG_GLOBAL,
 183     LEGACY_EVP_MD_METH_TABLE(sha512_init, sha512_update, sha512_final, NULL,
 184                              SHA512_CBLOCK),
 185 };
 186
 187 const EVP_MD *EVP_sha512(void)
 188 {
 189     return &sha512_md;
 190 }
 191
 192 #define EVP_MD_SHA3(bitlen)                                                    \
 193 const EVP_MD *EVP_sha3_##bitlen(void)                                          \
 194 {                                                                              \
 195     static const EVP_MD sha3_##bitlen##_md = {                                 \
 196         NID_sha3_##bitlen,                                                     \
 197         NID_RSA_SHA3_##bitlen,                                                 \
 198         bitlen / 8,                                                            \
 199         EVP_MD_FLAG_DIGALGID_ABSENT,                                           \
 200         EVP_ORIG_GLOBAL,                                                       \
 201         LEGACY_EVP_MD_METH_TABLE(sha3_int_init, sha3_int_update,               \
 202                                  sha3_int_final, NULL,                         \
 203                                  (KECCAK1600_WIDTH - bitlen * 2) / 8),         \
 204     };                                                                         \
 205     return &sha3_##bitlen##_md;                                                \
 206 }
 207 #define EVP_MD_SHAKE(bitlen)                                                   \
 208 const EVP_MD *EVP_shake##bitlen(void)                                          \
 209 {                                                                              \
 210     static const EVP_MD shake##bitlen##_md = {                                 \
 211         NID_shake##bitlen,                                                     \
 212         0,                                                                     \
 213         bitlen / 8,                                                            \
 214         EVP_MD_FLAG_XOF,                                                       \
 215         EVP_ORIG_GLOBAL,                                                       \
 216         LEGACY_EVP_MD_METH_TABLE(shake_init, sha3_int_update, sha3_int_final,  \
 217                         shake_ctrl, (KECCAK1600_WIDTH - bitlen * 2) / 8),      \
 218     };                                                                         \
 219     return &shake##bitlen##_md;                                                \
 220 }
 221
 222 EVP_MD_SHA3(224)
 223 EVP_MD_SHA3(256)
 224 EVP_MD_SHA3(384)
 225 EVP_MD_SHA3(512)
 226
 227 EVP_MD_SHAKE(128)
 228 EVP_MD_SHAKE(256)