text: /*	$Id: sha1.h,v 1.2 2004/07/05 08:55:03 SuLiang Exp $ */
  /*	   $KAME: sha1.h,v 1.4 2000/02/22 14:01:18 itojun Exp $    */
  
  /*
   * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *	  notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *	  notice, this list of conditions and the following disclaimer in the
   *	  documentation and/or other materials provided with the distribution.
   * 3. Neither the name of the project nor the names of its contributors
   *	  may be used to endorse or promote products derived from this software
   *	  without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.	IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  /*
   * FIPS pub 180-1: Secure Hash Algorithm (SHA-1)
   * based on: http://csrc.nist.gov/fips/fip180-1.txt
   * implemented by Jun-ichiro itojun Itoh <itojun@itojun.org>
   */
  
  #ifndef _NETINET6_SHA1_H_
  #define _NETINET6_SHA1_H_
  
  struct sha1_ctxt
  {
  	union
  	{
  		uint8		b8[20];
  		uint32		b32[5];
  	}			h;
  	union
  	{
  		uint8		b8[8];
  		uint64		b64[1];
  	}			c;
  	union
  	{
  		uint8		b8[64];
  		uint32		b32[16];
  	}			m;
  	uint8		count;
  };
  
  extern void sha1_init(struct sha1_ctxt *);
  extern void sha1_pad(struct sha1_ctxt *);
  extern void sha1_loop(struct sha1_ctxt *, const uint8 *, size_t);
  extern void sha1_result(struct sha1_ctxt *, uint8 *);
  
  /* compatibilty with other SHA1 source codes */
  typedef struct sha1_ctxt SHA1_CTX;
  
  #define SHA1Init(x)		sha1_init((x))
  #define SHA1Update(x, y, z) sha1_loop((x), (y), (z))
  #define SHA1Final(x, y)		sha1_result((y), (x))
  
  #define SHA1_RESULTLEN	(160/8)
  
  #endif   /* _NETINET6_SHA1_H_ */
  