sha1.h

   1 /*
   2  *  sha1.h
   3  *
   4  *      Copyright (C) 1998
   5  *      Paul E. Jones <paulej@arid.us>
   6  *      All Rights Reserved
   7  *
   8  *  This software is licensed as "freeware."  Permission to distribute
   9  *  this software in source and binary forms is hereby granted without
  10  *  a fee.  THIS SOFTWARE IS PROVIDED 'AS IS' AND WITHOUT ANY EXPRESSED
  11  *  OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  12  *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  13  *  THE AUTHOR SHALL NOT BE HELD LIABLE FOR ANY DAMAGES RESULTING
  14  *  FROM THE USE OF THIS SOFTWARE, EITHER DIRECTLY OR INDIRECTLY, INCLUDING,
  15  *  BUT NOT LIMITED TO, LOSS OF DATA OR DATA BEING RENDERED INACCURATE.
  16  *
  17  *  This software is licensed as "freeware."  Permission to distribute
  18  *  this software in source and binary forms is hereby granted without
  19  *  a fee.  THIS SOFTWARE IS PROVIDED 'AS IS' AND WITHOUT ANY EXPRESSED
  20  *  OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  21  *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  22  *  THE AUTHOR SHALL NOT BE HELD LIABLE FOR ANY DAMAGES RESULTING
  23  *  FROM THE USE OF THIS SOFTWARE, EITHER DIRECTLY OR INDIRECTLY, INCLUDING,
  24  *  BUT NOT LIMITED TO, LOSS OF DATA OR DATA BEING RENDERED INACCURATE.
  25  *
  26  *****************************************************************************
  27  *      $Id: sha1.h,v 1.2 2004/03/27 18:00:33 paulej Exp $
  28  *****************************************************************************
  29  *
  30  *  Description:
  31  *      This class implements the Secure Hashing Standard as defined
  32  *      in FIPS PUB 180-1 published April 17, 1995.
  33  *
  34  *      Many of the variable names in the SHA1Context, especially the
  35  *      single character names, were used because those were the names
  36  *      used in the publication.
  37  *
  38  *      Please read the file sha1.c for more information.
  39  *
  40  */
  41
  42 #ifndef _SHA1_H_
  43 #define _SHA1_H_
  44
  45 /*
  46  *  This structure will hold context information for the hashing
  47  *  operation
  48  */
  49 typedef struct SHA1Context
  50 {
  51     unsigned Message_Digest[5]; /* Message Digest (output)          */
  52
  53     unsigned Length_Low;        /* Message length in bits           */
  54     unsigned Length_High;       /* Message length in bits           */
  55
  56     unsigned char Message_Block[64]; /* 512-bit message blocks      */
  57     int Message_Block_Index;    /* Index into message block array   */
  58
  59     int Computed;               /* Is the digest computed?          */
  60     int Corrupted;              /* Is the message digest corruped?  */
  61 } SHA1Context;
  62
  63 /*
  64  *  Function Prototypes
  65  */
  66 void SHA1Reset(SHA1Context *);
  67 int SHA1Result(SHA1Context *);
  68 void SHA1Input( SHA1Context *,
  69                 const unsigned char *,
  70                 unsigned);
  71
  72 #endif