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

     /*      $FreeBSD: releng/9.2/sys/crypto/sha2/sha2.h 92756 2002-03-20 05:14:42Z alfred $ */
     /*      $KAME: sha2.h,v 1.3 2001/03/12 08:27:48 itojun Exp $    */
     
     /*
      * sha2.h
      *
      * Version 1.0.0beta1
      *
      * Written by Aaron D. Gifford <me@aarongifford.com>
     *
     * Copyright 2000 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(S) 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(S) 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.
     *
     */
    
    #ifndef __SHA2_H__
    #define __SHA2_H__
    
    #ifdef __cplusplus
    extern "C" {
    #endif
    
    
    /*** 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 Structures *******************************/
    /* NOTE: If your architecture does not define either u_intXX_t types or
     * uintXX_t (from inttypes.h), you may need to define things by hand
     * for your system:
     */
    #if 0
    typedef unsigned char u_int8_t;         /* 1-byte  (8-bits)  */
    typedef unsigned int u_int32_t;         /* 4-bytes (32-bits) */
    typedef unsigned long long u_int64_t;   /* 8-bytes (64-bits) */
    #endif
    /*
     * Most BSD systems already define u_intXX_t types, as does Linux.
     * Some systems, however, like Compaq's Tru64 Unix instead can use
     * uintXX_t types defined by very recent ANSI C standards and included
     * in the file:
     *
     *   #include <inttypes.h>
     *
     * If you choose to use <inttypes.h> then please define: 
     *
     *   #define SHA2_USE_INTTYPES_H
     *
     * Or on the command line during compile:
     *
     *   cc -DSHA2_USE_INTTYPES_H ...
     */
    #if 0 /*def SHA2_USE_INTTYPES_H*/
    
    typedef struct _SHA256_CTX {
            uint32_t        state[8];
            uint64_t        bitcount;
            uint8_t buffer[SHA256_BLOCK_LENGTH];
    } SHA256_CTX;
    typedef struct _SHA512_CTX {
            uint64_t        state[8];
            uint64_t        bitcount[2];
            uint8_t buffer[SHA512_BLOCK_LENGTH];
    } SHA512_CTX;
    
    #else /* SHA2_USE_INTTYPES_H */
    
   typedef struct _SHA256_CTX {
           u_int32_t       state[8];
           u_int64_t       bitcount;
           u_int8_t        buffer[SHA256_BLOCK_LENGTH];
   } SHA256_CTX;
   typedef struct _SHA512_CTX {
           u_int64_t       state[8];
           u_int64_t       bitcount[2];
           u_int8_t        buffer[SHA512_BLOCK_LENGTH];
   } SHA512_CTX;
   
   #endif /* SHA2_USE_INTTYPES_H */
   
   typedef SHA512_CTX SHA384_CTX;
   
   
   /*** SHA-256/384/512 Function Prototypes ******************************/
   
   void SHA256_Init(SHA256_CTX *);
   void SHA256_Update(SHA256_CTX*, const u_int8_t*, size_t);
   void SHA256_Final(u_int8_t[SHA256_DIGEST_LENGTH], SHA256_CTX*);
   char* SHA256_End(SHA256_CTX*, char[SHA256_DIGEST_STRING_LENGTH]);
   char* SHA256_Data(const u_int8_t*, size_t, char[SHA256_DIGEST_STRING_LENGTH]);
   
   void SHA384_Init(SHA384_CTX*);
   void SHA384_Update(SHA384_CTX*, const u_int8_t*, size_t);
   void SHA384_Final(u_int8_t[SHA384_DIGEST_LENGTH], SHA384_CTX*);
   char* SHA384_End(SHA384_CTX*, char[SHA384_DIGEST_STRING_LENGTH]);
   char* SHA384_Data(const u_int8_t*, size_t, char[SHA384_DIGEST_STRING_LENGTH]);
   
   void SHA512_Init(SHA512_CTX*);
   void SHA512_Update(SHA512_CTX*, const u_int8_t*, size_t);
   void SHA512_Final(u_int8_t[SHA512_DIGEST_LENGTH], SHA512_CTX*);
   char* SHA512_End(SHA512_CTX*, char[SHA512_DIGEST_STRING_LENGTH]);
   char* SHA512_Data(const u_int8_t*, size_t, char[SHA512_DIGEST_STRING_LENGTH]);
   
   #ifdef  __cplusplus
   }
   #endif /* __cplusplus */
   
   #endif /* __SHA2_H__ */
   

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