thodg/cgminer/sha2.h

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• Hash : 77a2ad21
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  Date : 2013-11-10T11:06:29
  

  sha2 allow external access to some macros and the K array
  

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• sha2.h

• /*
   * FIPS 180-2 SHA-224/256/384/512 implementation
   * Last update: 02/02/2007
   * Issue date:  04/30/2005
   *
   * Copyright (C) 2013, Con Kolivas <kernel@kolivas.org>
   * Copyright (C) 2005, 2007 Olivier Gay <olivier.gay@a3.epfl.ch>
   * 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.
   */
  
  #include "config.h"
  #include "miner.h"
  
  #ifndef SHA2_H
  #define SHA2_H
  
  #define SHA256_DIGEST_SIZE ( 256 / 8)
  #define SHA256_BLOCK_SIZE  ( 512 / 8)
  
  #define SHFR(x, n)    (x >> n)
  #define ROTR(x, n)   ((x >> n) | (x << ((sizeof(x) << 3) - n)))
  #define CH(x, y, z)  ((x & y) ^ (~x & z))
  #define MAJ(x, y, z) ((x & y) ^ (x & z) ^ (y & z))
  
  #define SHA256_F1(x) (ROTR(x,  2) ^ ROTR(x, 13) ^ ROTR(x, 22))
  #define SHA256_F2(x) (ROTR(x,  6) ^ ROTR(x, 11) ^ ROTR(x, 25))
  #define SHA256_F3(x) (ROTR(x,  7) ^ ROTR(x, 18) ^ SHFR(x,  3))
  #define SHA256_F4(x) (ROTR(x, 17) ^ ROTR(x, 19) ^ SHFR(x, 10))
  
  typedef struct {
      unsigned int tot_len;
      unsigned int len;
      unsigned char block[2 * SHA256_BLOCK_SIZE];
      uint32_t h[8];
  } sha256_ctx;
  
  extern uint32_t sha256_k[64];
  
  void sha256_init(sha256_ctx * ctx);
  void sha256_update(sha256_ctx *ctx, const unsigned char *message,
                     unsigned int len);
  void sha256_final(sha256_ctx *ctx, unsigned char *digest);
  void sha256(const unsigned char *message, unsigned int len,
              unsigned char *digest);
  
  #endif /* !SHA2_H */
  

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