FreeBSD/Linux Kernel Cross Reference
sys/crypto/sha2.h

     /*      $OpenBSD: sha2.h,v 1.5 2014/11/16 17:39:09 tedu Exp $   */
     
     /*
      * FILE:        sha2.h
      * AUTHOR:      Aaron D. Gifford <me@aarongifford.com>
      * 
      * Copyright (c) 2000-2001, Aaron D. Gifford
      * 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 copyright holder nor the names of contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     * 
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``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 AUTHOR OR CONTRIBUTOR(S) 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.
     *
     * $From: sha2.h,v 1.1 2001/11/08 00:02:01 adg Exp adg $
     */
    
    #ifndef _SHA2_H
    #define _SHA2_H
    
    
    /*** SHA-256/384/512 Various Length Definitions ***********************/
    #define SHA256_BLOCK_LENGTH             64
    #define SHA256_DIGEST_LENGTH            32
    #define SHA256_DIGEST_STRING_LENGTH     (SHA256_DIGEST_LENGTH * 2 + 1)
    #define SHA384_BLOCK_LENGTH             128
    #define SHA384_DIGEST_LENGTH            48
    #define SHA384_DIGEST_STRING_LENGTH     (SHA384_DIGEST_LENGTH * 2 + 1)
    #define SHA512_BLOCK_LENGTH             128
    #define SHA512_DIGEST_LENGTH            64
    #define SHA512_DIGEST_STRING_LENGTH     (SHA512_DIGEST_LENGTH * 2 + 1)
    
    
    /*** SHA-256/384/512 Context Structure *******************************/
    typedef struct _SHA2_CTX {
            union {
                    u_int32_t       st32[8];
                    u_int64_t       st64[8];
            } state;
            u_int64_t       bitcount[2];
            u_int8_t        buffer[SHA512_BLOCK_LENGTH];
    } SHA2_CTX;
    
    __BEGIN_DECLS
    void SHA256Init(SHA2_CTX *);
    void SHA256Update(SHA2_CTX *, const void *, size_t)
            __attribute__((__bounded__(__string__,2,3)));
    void SHA256Final(u_int8_t[SHA256_DIGEST_LENGTH], SHA2_CTX *)
            __attribute__((__bounded__(__minbytes__,1,SHA256_DIGEST_LENGTH)));
    
    void SHA384Init(SHA2_CTX *);
    void SHA384Update(SHA2_CTX *, const void *, size_t)
            __attribute__((__bounded__(__string__,2,3)));
    void SHA384Final(u_int8_t[SHA384_DIGEST_LENGTH], SHA2_CTX *)
            __attribute__((__bounded__(__minbytes__,1,SHA384_DIGEST_LENGTH)));
    
    void SHA512Init(SHA2_CTX *);
    void SHA512Update(SHA2_CTX *, const void *, size_t)
            __attribute__((__bounded__(__string__,2,3)));
    void SHA512Final(u_int8_t[SHA512_DIGEST_LENGTH], SHA2_CTX *)
            __attribute__((__bounded__(__minbytes__,1,SHA512_DIGEST_LENGTH)));
    __END_DECLS
    
    #endif /* _SHA2_H */

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