sha1.h
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sha1.h
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	/* sha1.h - SHA1 hash function
	* Copyright (c) 1997 by Werner Koch (dd9jn)
	*
	* This file is part of G10.
	*
	* G10 is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* G10 is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
	*/
	#ifndef G10_SHA1_H
	#define G10_SHA1_H

	#include "types.h"

	typedef struct {
	u32 h0,h1,h2,h3,h4;
	u32 nblocks;
	byte buffer[64];
	int bufcount;
	} *SHA1HANDLE;


	/****************
	* Process a single character, this character will be buffered to
	* increase performance.
	*/
	#define sha1_putchar(h,c) \
	do { \
	if( (h)->bufcount == 64 ) \
	sha1_write( (h), NULL, 0 ); \
	(h)->buffer[(h)->bufcount++] = (c) & 0xff; \
	} while(0)

	SHA1HANDLE sha1_open( int secure );
	SHA1HANDLE sha1_copy( SHA1HANDLE a );
	void sha1_close( SHA1HANDLE hd );
	void sha1_write( SHA1HANDLE hd, byte *inbuf, size_t inlen );
	byte * sha1_final( SHA1HANDLE hd );

	#endif /G10_SHA1_H/