crypto/evp/legacy_sha.c

   1 /*
   2  * Copyright 2019-2020 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, sha3, '\x06')
  64 IMPLEMENT_LEGACY_EVP_MD_METH_SHAKE(shake, sha3, '\x1f')
  65
  66 static int sha1_int_ctrl(EVP_MD_CTX *ctx, int cmd, int p1, void *p2)
  67 {
  68     return sha1_ctrl(ctx != NULL ? EVP_MD_CTX_md_data(ctx) : NULL, cmd, p1, p2);
  69 }
  70
  71 static int shake_ctrl(EVP_MD_CTX *evp_ctx, int cmd, int p1, void *p2)
  72 {
  73     KECCAK1600_CTX *ctx = evp_ctx->md_data;
  74
  75     switch (cmd) {
  76     case EVP_MD_CTRL_XOF_LEN:
  77         ctx->md_size = p1;
  78         return 1;
  79     default:
  80         return 0;
  81     }
  82 }
  83
  84
  85
  86 static const EVP_MD sha1_md = {
  87     NID_sha1,
  88     NID_sha1WithRSAEncryption,
  89     SHA_DIGEST_LENGTH,
  90     EVP_MD_FLAG_DIGALGID_ABSENT,
  91     LEGACY_EVP_MD_METH_TABLE(sha1_init, sha1_update, sha1_final, sha1_int_ctrl,
  92                              SHA_CBLOCK),
  93 };
  94
  95 const EVP_MD *EVP_sha1(void)
  96 {
  97     return &sha1_md;
  98 }
  99
 100 static const EVP_MD sha224_md = {
 101     NID_sha224,
 102     NID_sha224WithRSAEncryption,
 103     SHA224_DIGEST_LENGTH,
 104     EVP_MD_FLAG_DIGALGID_ABSENT,
 105     LEGACY_EVP_MD_METH_TABLE(sha224_init, sha224_update, sha224_final, NULL,
 106                              SHA256_CBLOCK),
 107 };
 108
 109 const EVP_MD *EVP_sha224(void)
 110 {
 111     return &sha224_md;
 112 }
 113
 114 static const EVP_MD sha256_md = {
 115     NID_sha256,
 116     NID_sha256WithRSAEncryption,
 117     SHA256_DIGEST_LENGTH,
 118     EVP_MD_FLAG_DIGALGID_ABSENT,
 119     LEGACY_EVP_MD_METH_TABLE(sha256_init, sha256_update, sha256_final, NULL,
 120                              SHA256_CBLOCK),
 121 };
 122
 123 const EVP_MD *EVP_sha256(void)
 124 {
 125     return &sha256_md;
 126 }
 127
 128 static const EVP_MD sha512_224_md = {
 129     NID_sha512_224,
 130     NID_sha512_224WithRSAEncryption,
 131     SHA224_DIGEST_LENGTH,
 132     EVP_MD_FLAG_DIGALGID_ABSENT,
 133     LEGACY_EVP_MD_METH_TABLE(sha512_224_int_init, sha512_224_int_update,
 134                              sha512_224_int_final, NULL, SHA512_CBLOCK),
 135 };
 136
 137 const EVP_MD *EVP_sha512_224(void)
 138 {
 139     return &sha512_224_md;
 140 }
 141
 142 static const EVP_MD sha512_256_md = {
 143     NID_sha512_256,
 144     NID_sha512_256WithRSAEncryption,
 145     SHA256_DIGEST_LENGTH,
 146     EVP_MD_FLAG_DIGALGID_ABSENT,
 147     LEGACY_EVP_MD_METH_TABLE(sha512_256_int_init, sha512_256_int_update,
 148                              sha512_256_int_final, NULL, SHA512_CBLOCK),
 149 };
 150
 151 const EVP_MD *EVP_sha512_256(void)
 152 {
 153     return &sha512_256_md;
 154 }
 155
 156 static const EVP_MD sha384_md = {
 157     NID_sha384,
 158     NID_sha384WithRSAEncryption,
 159     SHA384_DIGEST_LENGTH,
 160     EVP_MD_FLAG_DIGALGID_ABSENT,
 161     LEGACY_EVP_MD_METH_TABLE(sha384_init, sha384_update, sha384_final, NULL,
 162                              SHA512_CBLOCK),
 163 };
 164
 165 const EVP_MD *EVP_sha384(void)
 166 {
 167     return &sha384_md;
 168 }
 169
 170 static const EVP_MD sha512_md = {
 171     NID_sha512,
 172     NID_sha512WithRSAEncryption,
 173     SHA512_DIGEST_LENGTH,
 174     EVP_MD_FLAG_DIGALGID_ABSENT,
 175     LEGACY_EVP_MD_METH_TABLE(sha512_init, sha512_update, sha512_final, NULL,
 176                              SHA512_CBLOCK),
 177 };
 178
 179 const EVP_MD *EVP_sha512(void)
 180 {
 181     return &sha512_md;
 182 }
 183
 184 #define EVP_MD_SHA3(bitlen)                                                    \
 185 const EVP_MD *EVP_sha3_##bitlen(void)                                          \
 186 {                                                                              \
 187     static const EVP_MD sha3_##bitlen##_md = {                                 \
 188         NID_sha3_##bitlen,                                                     \
 189         NID_RSA_SHA3_##bitlen,                                                 \
 190         bitlen / 8,                                                            \
 191         EVP_MD_FLAG_DIGALGID_ABSENT,                                           \
 192         LEGACY_EVP_MD_METH_TABLE(sha3_int_init, sha3_int_update,               \
 193                                  sha3_int_final, NULL,                         \
 194                                  (KECCAK1600_WIDTH - bitlen * 2) / 8),         \
 195     };                                                                         \
 196     return &sha3_##bitlen##_md;                                                \
 197 }
 198 #define EVP_MD_SHAKE(bitlen)                                                   \
 199 const EVP_MD *EVP_shake##bitlen(void)                                          \
 200 {                                                                              \
 201     static const EVP_MD shake##bitlen##_md = {                                 \
 202         NID_shake##bitlen,                                                     \
 203         0,                                                                     \
 204         bitlen / 8,                                                            \
 205         EVP_MD_FLAG_XOF,                                                       \
 206         LEGACY_EVP_MD_METH_TABLE(shake_init, sha3_int_update, sha3_int_final,  \
 207                         shake_ctrl, (KECCAK1600_WIDTH - bitlen * 2) / 8),      \
 208     };                                                                         \
 209     return &shake##bitlen##_md;                                                \
 210 }
 211
 212 EVP_MD_SHA3(224)
 213 EVP_MD_SHA3(256)
 214 EVP_MD_SHA3(384)
 215 EVP_MD_SHA3(512)
 216
 217 EVP_MD_SHAKE(128)
 218 EVP_MD_SHAKE(256)