SHA256Reset.c
Author: cmaier@cmassoc.net

    /*====================================================================*
     *
     *   SHA256Reset (struct sha256 * sha256)
     *
     *   SHA256.h
     *
     *   initialize the SHA256 hash state; this effectively erases the
     *   previous hash state;
     *
     *   Read standard FIPS180-2 sec 5.3.2 for an explanation;
     *
     *   Motley Tools by Charles Maier <cmaier@cmassoc.net>;
     *   Copyright (c) 2001-2006 by Charles Maier Associates;
     *   Licensed under the Internet Software Consortium License;
     *
     *--------------------------------------------------------------------*/

    #ifndef SHA256RESET_SOURCE
    #define SHA256RESET_SOURCE

    #include "../key/SHA256.h"

    void SHA256Reset (struct sha256 * sha256)

    {
    	memset (sha256, 0, sizeof (struct sha256));
    	sha256->state [0] = 0x6A09E667;
    	sha256->state [1] = 0xBB67AE85;
    	sha256->state [2] = 0x3C6EF372;
    	sha256->state [3] = 0xA54FF53A;
    	sha256->state [4] = 0x510E527F;
    	sha256->state [5] = 0x9B05688C;
    	sha256->state [6] = 0x1F83D9AB;
    	sha256->state [7] = 0x5BE0CD19;
    	sha256->extra [0] = 0x80;
    	return;
    }

    #endif

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