tc/crypto/Sha1.h

   1 /*
   2  ---------------------------------------------------------------------------
   3  Copyright (c) 2002, Dr Brian Gladman, Worcester, UK.   All rights reserved.
   4
   5  LICENSE TERMS
   6
   7  The free distribution and use of this software is allowed (with or without
   8  changes) provided that:
   9
  10   1. source code distributions include the above copyright notice, this
  11      list of conditions and the following disclaimer;
  12
  13   2. binary distributions include the above copyright notice, this list
  14      of conditions and the following disclaimer in their documentation;
  15
  16   3. the name of the copyright holder is not used to endorse products
  17      built using this software without specific written permission.
  18
  19  DISCLAIMER
  20
  21  This software is provided 'as is' with no explicit or implied warranties
  22  in respect of its properties, including, but not limited to, correctness
  23  and/or fitness for purpose.
  24  ---------------------------------------------------------------------------
  25  Issue Date: 26/08/2003
  26 */
  27
  28 #ifndef _SHA1_H
  29 #define _SHA1_H
  30
  31 #include <limits.h>
  32
  33 #define SHA1_BLOCK_SIZE  64
  34 #define SHA1_DIGEST_SIZE 20
  35
  36 #if defined(__cplusplus)
  37 extern "C"
  38 {
  39 #endif
  40
  41 /* define an unsigned 32-bit type */
  42
  43 #if defined(_MSC_VER)
  44   typedef   unsigned __int32    sha1_32t;
  45 #elif defined(ULONG_MAX) && ULONG_MAX == 0xfffffffful
  46   typedef   unsigned __int32    sha1_32t;
  47 #elif defined(UINT_MAX) && UINT_MAX == 0xffffffff
  48   typedef   unsigned int     sha1_32t;
  49 #else
  50 #  error Please define sha1_32t as an unsigned 32 bit type in sha1.h
  51 #endif
  52
  53 /* type to hold the SHA256 context  */
  54
  55 typedef struct
  56 {   sha1_32t count[2];
  57     sha1_32t hash[5];
  58     sha1_32t wbuf[16];
  59 } sha1_ctx;
  60
  61 /* Note that these prototypes are the same for both bit and */
  62 /* byte oriented implementations. However the length fields */
  63 /* are in bytes or bits as appropriate for the version used */
  64 /* and bit sequences are input as arrays of bytes in which  */
  65 /* bit sequences run from the most to the least significant */
  66 /* end of each byte                                         */
  67
  68 void sha1_compile(sha1_ctx ctx[1]);
  69
  70 void sha1_begin(sha1_ctx ctx[1]);
  71 void sha1_hash(const unsigned char data[], unsigned __int32 len, sha1_ctx ctx[1]);
  72 void sha1_end(unsigned char hval[], sha1_ctx ctx[1]);
  73 void sha1(unsigned char hval[], const unsigned char data[], unsigned __int32 len);
  74
  75 #if defined(__cplusplus)
  76 }
  77 #endif
  78
  79 #endif