src/util/sha2.h

   1 /* crypto/sha/sha.h */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #pragma once
  60
  61 #include <stddef.h>
  62
  63 #ifdef __cplusplus
  64 extern "C" {
  65 #endif
  66
  67 #if defined(OPENSSL_NO_SHA) || (defined(OPENSSL_NO_SHA0) && defined(OPENSSL_NO_SHA1))
  68 #error SHA is disabled.
  69 #endif
  70
  71 #if defined(OPENSSL_FIPS)
  72 #define FIPS_SHA_SIZE_T size_t
  73 #endif
  74
  75 /*
  76         Compat stuff from OpenSSL land
  77  */
  78
  79 /* crypto.h */
  80
  81 #define fips_md_init(alg) fips_md_init_ctx(alg, alg)
  82
  83 #define fips_md_init_ctx(alg, cx) int alg##_Init(cx##_CTX *c)
  84 #define fips_cipher_abort(alg) while (0)
  85
  86 /*-
  87  * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  88  * ! SHA_LONG has to be at least 32 bits wide. If it's wider, then !
  89  * ! SHA_LONG_LOG2 has to be defined along.                        !
  90  * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  91  */
  92
  93 #if defined(__LP32__)
  94 #define SHA_LONG unsigned long
  95 #elif defined(__ILP64__)
  96 #define SHA_LONG unsigned long
  97 #define SHA_LONG_LOG2 3
  98 #else
  99 #define SHA_LONG unsigned int
 100 #endif
 101
 102 #define SHA_LBLOCK 16
 103 #define SHA_CBLOCK                                                                       \
 104         (SHA_LBLOCK * 4) /* SHA treats input data as a                                   \
 105                           * contiguous array of 32 bit wide                              \
 106                           * big-endian values. */
 107 #define SHA_LAST_BLOCK (SHA_CBLOCK - 8)
 108 #define SHA_DIGEST_LENGTH 20
 109
 110 typedef struct SHAstate_st
 111 {
 112         SHA_LONG h0, h1, h2, h3, h4;
 113         SHA_LONG Nl, Nh;
 114         SHA_LONG data[SHA_LBLOCK];
 115         unsigned int num;
 116 } SHA_CTX;
 117
 118 #define SHA256_CBLOCK                                                                    \
 119         (SHA_LBLOCK * 4) /* SHA-256 treats input data as a                               \
 120                           * contiguous array of 32 bit wide                              \
 121                           * big-endian values. */
 122 #define SHA224_DIGEST_LENGTH 28
 123 #define SHA256_DIGEST_LENGTH 32
 124
 125 typedef struct SHA256state_st
 126 {
 127         SHA_LONG h[8];
 128         SHA_LONG Nl, Nh;
 129         SHA_LONG data[SHA_LBLOCK];
 130         unsigned int num, md_len;
 131 } SHA256_CTX;
 132
 133 #ifndef OPENSSL_NO_SHA256
 134 #ifdef OPENSSL_FIPS
 135 int private_SHA224_Init(SHA256_CTX *c);
 136 int private_SHA256_Init(SHA256_CTX *c);
 137 #endif
 138 int SHA224_Init(SHA256_CTX *c);
 139 int SHA224_Update(SHA256_CTX *c, const void *data, size_t len);
 140 int SHA224_Final(unsigned char *md, SHA256_CTX *c);
 141 unsigned char *SHA224(const unsigned char *d, size_t n, unsigned char *md);
 142 int SHA256_Init(SHA256_CTX *c);
 143 int SHA256_Update(SHA256_CTX *c, const void *data, size_t len);
 144 int SHA256_Final(unsigned char *md, SHA256_CTX *c);
 145 unsigned char *SHA256(const unsigned char *d, size_t n, unsigned char *md);
 146 void SHA256_Transform(SHA256_CTX *c, const unsigned char *data);
 147 #endif
 148
 149 #define SHA384_DIGEST_LENGTH 48
 150 #define SHA512_DIGEST_LENGTH 64
 151
 152 #ifdef __cplusplus
 153 }
 154 #endif