include/openssl/sha.h

   1 /*
   2  * Copyright 1995-2016 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 #ifndef OPENSSL_SHA_H
  11 # define OPENSSL_SHA_H
  12
  13 # include <openssl/e_os2.h>
  14 # include <stddef.h>
  15
  16 #ifdef  __cplusplus
  17 extern "C" {
  18 #endif
  19
  20 /*-
  21  * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  22  * ! SHA_LONG has to be at least 32 bits wide.                    !
  23  * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  24  */
  25 # define SHA_LONG unsigned int
  26
  27 # define SHA_LBLOCK      16
  28 # define SHA_CBLOCK      (SHA_LBLOCK*4)/* SHA treats input data as a
  29                                         * contiguous array of 32 bit wide
  30                                         * big-endian values. */
  31 # define SHA_LAST_BLOCK  (SHA_CBLOCK-8)
  32 # define SHA_DIGEST_LENGTH 20
  33
  34 typedef struct SHAstate_st {
  35     SHA_LONG h0, h1, h2, h3, h4;
  36     SHA_LONG Nl, Nh;
  37     SHA_LONG data[SHA_LBLOCK];
  38     unsigned int num;
  39 } SHA_CTX;
  40
  41 int SHA1_Init(SHA_CTX *c);
  42 int SHA1_Update(SHA_CTX *c, const void *data, size_t len);
  43 int SHA1_Final(unsigned char *md, SHA_CTX *c);
  44 unsigned char *SHA1(const unsigned char *d, size_t n, unsigned char *md);
  45 void SHA1_Transform(SHA_CTX *c, const unsigned char *data);
  46
  47 # define SHA256_CBLOCK   (SHA_LBLOCK*4)/* SHA-256 treats input data as a
  48                                         * contiguous array of 32 bit wide
  49                                         * big-endian values. */
  50
  51 typedef struct SHA256state_st {
  52     SHA_LONG h[8];
  53     SHA_LONG Nl, Nh;
  54     SHA_LONG data[SHA_LBLOCK];
  55     unsigned int num, md_len;
  56 } SHA256_CTX;
  57
  58 int SHA224_Init(SHA256_CTX *c);
  59 int SHA224_Update(SHA256_CTX *c, const void *data, size_t len);
  60 int SHA224_Final(unsigned char *md, SHA256_CTX *c);
  61 unsigned char *SHA224(const unsigned char *d, size_t n, unsigned char *md);
  62 int SHA256_Init(SHA256_CTX *c);
  63 int SHA256_Update(SHA256_CTX *c, const void *data, size_t len);
  64 int SHA256_Final(unsigned char *md, SHA256_CTX *c);
  65 unsigned char *SHA256(const unsigned char *d, size_t n, unsigned char *md);
  66 void SHA256_Transform(SHA256_CTX *c, const unsigned char *data);
  67
  68 # define SHA224_DIGEST_LENGTH    28
  69 # define SHA256_DIGEST_LENGTH    32
  70 # define SHA384_DIGEST_LENGTH    48
  71 # define SHA512_DIGEST_LENGTH    64
  72
  73 /*
  74  * Unlike 32-bit digest algorithms, SHA-512 *relies* on SHA_LONG64
  75  * being exactly 64-bit wide. See Implementation Notes in sha512.c
  76  * for further details.
  77  */
  78 /*
  79  * SHA-512 treats input data as a
  80  * contiguous array of 64 bit
  81  * wide big-endian values.
  82  */
  83 # define SHA512_CBLOCK   (SHA_LBLOCK*8)
  84 # if (defined(_WIN32) || defined(_WIN64)) && !defined(__MINGW32__)
  85 #  define SHA_LONG64 unsigned __int64
  86 #  define U64(C)     C##UI64
  87 # elif defined(__arch64__)
  88 #  define SHA_LONG64 unsigned long
  89 #  define U64(C)     C##UL
  90 # else
  91 #  define SHA_LONG64 unsigned long long
  92 #  define U64(C)     C##ULL
  93 # endif
  94
  95 typedef struct SHA512state_st {
  96     SHA_LONG64 h[8];
  97     SHA_LONG64 Nl, Nh;
  98     union {
  99         SHA_LONG64 d[SHA_LBLOCK];
 100         unsigned char p[SHA512_CBLOCK];
 101     } u;
 102     unsigned int num, md_len;
 103 } SHA512_CTX;
 104
 105 int SHA384_Init(SHA512_CTX *c);
 106 int SHA384_Update(SHA512_CTX *c, const void *data, size_t len);
 107 int SHA384_Final(unsigned char *md, SHA512_CTX *c);
 108 unsigned char *SHA384(const unsigned char *d, size_t n, unsigned char *md);
 109 int SHA512_Init(SHA512_CTX *c);
 110 int SHA512_Update(SHA512_CTX *c, const void *data, size_t len);
 111 int SHA512_Final(unsigned char *md, SHA512_CTX *c);
 112 unsigned char *SHA512(const unsigned char *d, size_t n, unsigned char *md);
 113 void SHA512_Transform(SHA512_CTX *c, const unsigned char *data);
 114
 115 #ifdef  __cplusplus
 116 }
 117 #endif
 118
 119 #endif