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Annotation of truecrypt/crypto/sha1.h, revision 1.1.1.4

1.1.1.2   root        1: /*
                      2:  ---------------------------------------------------------------------------
                      3:  Copyright (c) 2002, Dr Brian Gladman, Worcester, UK.   All rights reserved.
                      4: 
                      5:  LICENSE TERMS
                      6: 
1.1.1.4 ! root        7:  The free distribution and use of this software is allowed (with or without
        !             8:  changes) provided that:
1.1.1.2   root        9: 
1.1.1.4 ! root       10:   1. source code distributions include the above copyright notice, this
        !            11:      list of conditions and the following disclaimer;
1.1.1.2   root       12: 
1.1.1.4 ! root       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.
1.1.1.2   root       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: 
1.1.1.3   root       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);
1.1.1.2   root       74: 
                     75: #if defined(__cplusplus)
                     76: }
                     77: #endif
                     78: 
                     79: #endif

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