src/Crypt/sha2.h

   1 /*
   2  * FIPS 180-2 SHA-224/256/384/512 implementation
   3  * Last update: 02/02/2007
   4  * Issue date:  04/30/2005
   5  *
   6  * Copyright (C) 2005, 2007 Olivier Gay <olivier.gay@a3.epfl.ch>
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. Neither the name of the project nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifndef SHA2_H
  35 #define SHA2_H
  36
  37 #define SHA224_DIGEST_SIZE ( 224 / 8)
  38 #define SHA256_DIGEST_SIZE ( 256 / 8)
  39 #define SHA384_DIGEST_SIZE ( 384 / 8)
  40 #define SHA512_DIGEST_SIZE ( 512 / 8)
  41
  42 #define SHA256_BLOCK_SIZE  ( 512 / 8)
  43 #define SHA512_BLOCK_SIZE  (1024 / 8)
  44 #define SHA384_BLOCK_SIZE  SHA512_BLOCK_SIZE
  45 #define SHA224_BLOCK_SIZE  SHA256_BLOCK_SIZE
  46
  47 #ifndef SHA2_TYPES
  48 #define SHA2_TYPES
  49 typedef unsigned char uint8;
  50 typedef unsigned int  uint32;
  51 typedef unsigned long long uint64;
  52 #endif
  53
  54 #ifdef __cplusplus
  55 extern "C" {
  56 #endif
  57
  58 typedef struct {
  59     unsigned int tot_len;
  60     unsigned int len;
  61     unsigned char block[2 * SHA256_BLOCK_SIZE];
  62     uint32 h[8];
  63 } sha256_ctx;
  64
  65 typedef struct {
  66     unsigned int tot_len;
  67     unsigned int len;
  68     unsigned char block[2 * SHA512_BLOCK_SIZE];
  69     uint64 h[8];
  70 } sha512_ctx;
  71
  72 typedef sha512_ctx sha384_ctx;
  73 typedef sha256_ctx sha224_ctx;
  74
  75 void sha224_init(sha224_ctx *ctx);
  76 void sha224_update(sha224_ctx *ctx, const unsigned char *message,
  77                    unsigned int len);
  78 void sha224_final(sha224_ctx *ctx, unsigned char *digest);
  79 void sha224(const unsigned char *message, unsigned int len,
  80             unsigned char *digest);
  81
  82 void sha256_init(sha256_ctx * ctx);
  83 void sha256_update(sha256_ctx *ctx, const unsigned char *message,
  84                    unsigned int len);
  85 void sha256_final(sha256_ctx *ctx, unsigned char *digest);
  86 void sha256(const unsigned char *message, unsigned int len,
  87             unsigned char *digest);
  88
  89 void sha384_init(sha384_ctx *ctx);
  90 void sha384_update(sha384_ctx *ctx, const unsigned char *message,
  91                    unsigned int len);
  92 void sha384_final(sha384_ctx *ctx, unsigned char *digest);
  93 void sha384(const unsigned char *message, unsigned int len,
  94             unsigned char *digest);
  95
  96 void sha512_init(sha512_ctx *ctx);
  97 void sha512_update(sha512_ctx *ctx, const unsigned char *message,
  98                    unsigned int len);
  99 void sha512_final(sha512_ctx *ctx, unsigned char *digest);
 100 void sha512(const unsigned char *message, unsigned int len,
 101             unsigned char *digest);
 102
 103 #ifdef __cplusplus
 104 }
 105 #endif
 106
 107 #endif /* !SHA2_H */
 108