FreeBSD/Linux Kernel Cross Reference
sys/crypto/sha1.h

     /*      $FreeBSD: releng/12.0/sys/crypto/sha1.h 326023 2017-11-20 19:43:44Z pfg $       */
     /*      $KAME: sha1.h,v 1.5 2000/03/27 04:36:23 sumikawa Exp $  */
     
     /*-
      * SPDX-License-Identifier: BSD-3-Clause
      *
      * 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 _CRYPTO_SHA1_H_
    #define _CRYPTO_SHA1_H_
    
    struct sha1_ctxt {
            union {
                    u_int8_t        b8[20];
                    u_int32_t       b32[5];
            } h;
            union {
                    u_int8_t        b8[8];
                    u_int64_t       b64[1];
            } c;
            union {
                    u_int8_t        b8[64];
                    u_int32_t       b32[16];
            } m;
            u_int8_t        count;
    };
    typedef struct sha1_ctxt SHA1_CTX;
    
    #define SHA1_RESULTLEN  (160/8)
    
    #ifdef _KERNEL
    extern void sha1_init(struct sha1_ctxt *);
    extern void sha1_pad(struct sha1_ctxt *);
    extern void sha1_loop(struct sha1_ctxt *, const u_int8_t *, size_t);
    extern void sha1_result(struct sha1_ctxt *, char[__min_size(SHA1_RESULTLEN)]);
    
    /* compatibilty with other SHA1 source codes */
    #define SHA1Init(x)             sha1_init((x))
    #define SHA1Update(x, y, z)     sha1_loop((x), (y), (z))
    #define SHA1Final(x, y)         sha1_result((y), (x))
    #endif /* _KERNEL */
    
    #endif /*_CRYPTO_SHA1_H_*/

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