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fips_sha_locl.h

/* crypto/sha/sha_locl.h */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * 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 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 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.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdlib.h>
#include <string.h>

#include <openssl/opensslconf.h>
#include <openssl/sha.h>
#include <openssl/fips.h>

#ifndef SHA_LONG_LOG2
#define SHA_LONG_LOG2   2     /* default to 32 bits */
#endif

#define DATA_ORDER_IS_BIG_ENDIAN

#define HASH_LONG               SHA_LONG
#define HASH_LONG_LOG2          SHA_LONG_LOG2
#define HASH_CTX                SHA_CTX
#define HASH_CBLOCK             SHA_CBLOCK
#define HASH_LBLOCK             SHA_LBLOCK
#define HASH_MAKE_STRING(c,s)   do {      \
      unsigned long ll;       \
      ll=(c)->h0; HOST_l2c(ll,(s)); \
      ll=(c)->h1; HOST_l2c(ll,(s)); \
      ll=(c)->h2; HOST_l2c(ll,(s)); \
      ll=(c)->h3; HOST_l2c(ll,(s)); \
      ll=(c)->h4; HOST_l2c(ll,(s)); \
      } while (0)

#if defined(SHA_0)

# define HASH_UPDATE                SHA_Update
# define HASH_TRANSFORM             SHA_Transform
# define HASH_FINAL                 SHA_Final
# define HASH_INIT                  SHA_Init
# define HASH_BLOCK_HOST_ORDER      sha_block_host_order
# define HASH_BLOCK_DATA_ORDER      sha_block_data_order
# define Xupdate(a,ix,ia,ib,ic,id)  (ix=(a)=(ia^ib^ic^id))

  void sha_block_host_order (SHA_CTX *c, const void *p,FIPS_SHA_SIZE_T num);
  void sha_block_data_order (SHA_CTX *c, const void *p,FIPS_SHA_SIZE_T num);

#elif defined(SHA_1)

# define HASH_UPDATE                SHA1_Update
# define HASH_TRANSFORM             SHA1_Transform
# define HASH_FINAL                 SHA1_Final
# define HASH_INIT                  SHA1_Init
# define HASH_BLOCK_HOST_ORDER      sha1_block_host_order
# define HASH_BLOCK_DATA_ORDER      sha1_block_data_order
# if defined(__MWERKS__) && defined(__MC68K__)
   /* Metrowerks for Motorola fails otherwise:-( <appro@fy.chalmers.se> */
#  define Xupdate(a,ix,ia,ib,ic,id) do { (a)=(ia^ib^ic^id);       \
                                   ix=(a)=ROTATE((a),1);    \
                              } while (0)
# else
#  define Xupdate(a,ix,ia,ib,ic,id) ( (a)=(ia^ib^ic^id),    \
                                ix=(a)=ROTATE((a),1)  \
                              )
# endif

# ifdef SHA1_ASM
#  if defined(__i386) || defined(__i386__) || defined(_M_IX86) || defined(__INTEL__)
#   define sha1_block_host_order          sha1_block_asm_host_order
#   define DONT_IMPLEMENT_BLOCK_HOST_ORDER
#   define sha1_block_data_order          sha1_block_asm_data_order
#   define DONT_IMPLEMENT_BLOCK_DATA_ORDER
#   define HASH_BLOCK_DATA_ORDER_ALIGNED  sha1_block_asm_data_order
#  endif
# endif
  void sha1_block_host_order (SHA_CTX *c, const void *p,FIPS_SHA_SIZE_T num);
  void sha1_block_data_order (SHA_CTX *c, const void *p,FIPS_SHA_SIZE_T num);

#else
# error "Either SHA_0 or SHA_1 must be defined."
#endif

#include "fips_md32_common.h"

#define INIT_DATA_h0 0x67452301UL
#define INIT_DATA_h1 0xefcdab89UL
#define INIT_DATA_h2 0x98badcfeUL
#define INIT_DATA_h3 0x10325476UL
#define INIT_DATA_h4 0xc3d2e1f0UL

int HASH_INIT (SHA_CTX *c)
      {
      c->h0=INIT_DATA_h0;
      c->h1=INIT_DATA_h1;
      c->h2=INIT_DATA_h2;
      c->h3=INIT_DATA_h3;
      c->h4=INIT_DATA_h4;
      c->Nl=0;
      c->Nh=0;
      c->num=0;
      return 1;
      }

#define K_00_19   0x5a827999UL
#define K_20_39 0x6ed9eba1UL
#define K_40_59 0x8f1bbcdcUL
#define K_60_79 0xca62c1d6UL

/* As  pointed out by Wei Dai <weidai@eskimo.com>, F() below can be
 * simplified to the code in F_00_19.  Wei attributes these optimisations
 * to Peter Gutmann's SHS code, and he attributes it to Rich Schroeppel.
 * #define F(x,y,z) (((x) & (y))  |  ((~(x)) & (z)))
 * I've just become aware of another tweak to be made, again from Wei Dai,
 * in F_40_59, (x&a)|(y&a) -> (x|y)&a
 */
#define     F_00_19(b,c,d)    ((((c) ^ (d)) & (b)) ^ (d)) 
#define     F_20_39(b,c,d)    ((b) ^ (c) ^ (d))
#define F_40_59(b,c,d)  (((b) & (c)) | (((b)|(c)) & (d))) 
#define     F_60_79(b,c,d)    F_20_39(b,c,d)

#define BODY_00_15(i,a,b,c,d,e,f,xi) \
      (f)=xi+(e)+K_00_19+ROTATE((a),5)+F_00_19((b),(c),(d)); \
      (b)=ROTATE((b),30);

#define BODY_16_19(i,a,b,c,d,e,f,xi,xa,xb,xc,xd) \
      Xupdate(f,xi,xa,xb,xc,xd); \
      (f)+=(e)+K_00_19+ROTATE((a),5)+F_00_19((b),(c),(d)); \
      (b)=ROTATE((b),30);

#define BODY_20_31(i,a,b,c,d,e,f,xi,xa,xb,xc,xd) \
      Xupdate(f,xi,xa,xb,xc,xd); \
      (f)+=(e)+K_20_39+ROTATE((a),5)+F_20_39((b),(c),(d)); \
      (b)=ROTATE((b),30);

#define BODY_32_39(i,a,b,c,d,e,f,xa,xb,xc,xd) \
      Xupdate(f,xa,xa,xb,xc,xd); \
      (f)+=(e)+K_20_39+ROTATE((a),5)+F_20_39((b),(c),(d)); \
      (b)=ROTATE((b),30);

#define BODY_40_59(i,a,b,c,d,e,f,xa,xb,xc,xd) \
      Xupdate(f,xa,xa,xb,xc,xd); \
      (f)+=(e)+K_40_59+ROTATE((a),5)+F_40_59((b),(c),(d)); \
      (b)=ROTATE((b),30);

#define BODY_60_79(i,a,b,c,d,e,f,xa,xb,xc,xd) \
      Xupdate(f,xa,xa,xb,xc,xd); \
      (f)=xa+(e)+K_60_79+ROTATE((a),5)+F_60_79((b),(c),(d)); \
      (b)=ROTATE((b),30);

#ifdef X
#undef X
#endif
#ifndef MD32_XARRAY
  /*
   * Originally X was an array. As it's automatic it's natural
   * to expect RISC compiler to accomodate at least part of it in
   * the register bank, isn't it? Unfortunately not all compilers
   * "find" this expectation reasonable:-( On order to make such
   * compilers generate better code I replace X[] with a bunch of
   * X0, X1, etc. See the function body below...
   *                          <appro@fy.chalmers.se>
   */
# define X(i)     XX##i
#else
  /*
   * However! Some compilers (most notably HP C) get overwhelmed by
   * that many local variables so that we have to have the way to
   * fall down to the original behavior.
   */
# define X(i)     XX[i]
#endif

#ifndef DONT_IMPLEMENT_BLOCK_HOST_ORDER
void HASH_BLOCK_HOST_ORDER (SHA_CTX *c, const void *d, FIPS_SHA_SIZE_T num)
      {
      const SHA_LONG *W=d;
      register unsigned MD32_REG_T A,B,C,D,E,T;
#ifndef MD32_XARRAY
      unsigned MD32_REG_T     XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7,
                        XX8, XX9,XX10,XX11,XX12,XX13,XX14,XX15;
#else
      SHA_LONG    XX[16];
#endif

      if(FIPS_selftest_failed())
          return;

      A=c->h0;
      B=c->h1;
      C=c->h2;
      D=c->h3;
      E=c->h4;

      for (;;)
            {
      BODY_00_15( 0,A,B,C,D,E,T,W[ 0]);
      BODY_00_15( 1,T,A,B,C,D,E,W[ 1]);
      BODY_00_15( 2,E,T,A,B,C,D,W[ 2]);
      BODY_00_15( 3,D,E,T,A,B,C,W[ 3]);
      BODY_00_15( 4,C,D,E,T,A,B,W[ 4]);
      BODY_00_15( 5,B,C,D,E,T,A,W[ 5]);
      BODY_00_15( 6,A,B,C,D,E,T,W[ 6]);
      BODY_00_15( 7,T,A,B,C,D,E,W[ 7]);
      BODY_00_15( 8,E,T,A,B,C,D,W[ 8]);
      BODY_00_15( 9,D,E,T,A,B,C,W[ 9]);
      BODY_00_15(10,C,D,E,T,A,B,W[10]);
      BODY_00_15(11,B,C,D,E,T,A,W[11]);
      BODY_00_15(12,A,B,C,D,E,T,W[12]);
      BODY_00_15(13,T,A,B,C,D,E,W[13]);
      BODY_00_15(14,E,T,A,B,C,D,W[14]);
      BODY_00_15(15,D,E,T,A,B,C,W[15]);

      BODY_16_19(16,C,D,E,T,A,B,X( 0),W[ 0],W[ 2],W[ 8],W[13]);
      BODY_16_19(17,B,C,D,E,T,A,X( 1),W[ 1],W[ 3],W[ 9],W[14]);
      BODY_16_19(18,A,B,C,D,E,T,X( 2),W[ 2],W[ 4],W[10],W[15]);
      BODY_16_19(19,T,A,B,C,D,E,X( 3),W[ 3],W[ 5],W[11],X( 0));

      BODY_20_31(20,E,T,A,B,C,D,X( 4),W[ 4],W[ 6],W[12],X( 1));
      BODY_20_31(21,D,E,T,A,B,C,X( 5),W[ 5],W[ 7],W[13],X( 2));
      BODY_20_31(22,C,D,E,T,A,B,X( 6),W[ 6],W[ 8],W[14],X( 3));
      BODY_20_31(23,B,C,D,E,T,A,X( 7),W[ 7],W[ 9],W[15],X( 4));
      BODY_20_31(24,A,B,C,D,E,T,X( 8),W[ 8],W[10],X( 0),X( 5));
      BODY_20_31(25,T,A,B,C,D,E,X( 9),W[ 9],W[11],X( 1),X( 6));
      BODY_20_31(26,E,T,A,B,C,D,X(10),W[10],W[12],X( 2),X( 7));
      BODY_20_31(27,D,E,T,A,B,C,X(11),W[11],W[13],X( 3),X( 8));
      BODY_20_31(28,C,D,E,T,A,B,X(12),W[12],W[14],X( 4),X( 9));
      BODY_20_31(29,B,C,D,E,T,A,X(13),W[13],W[15],X( 5),X(10));
      BODY_20_31(30,A,B,C,D,E,T,X(14),W[14],X( 0),X( 6),X(11));
      BODY_20_31(31,T,A,B,C,D,E,X(15),W[15],X( 1),X( 7),X(12));

      BODY_32_39(32,E,T,A,B,C,D,X( 0),X( 2),X( 8),X(13));
      BODY_32_39(33,D,E,T,A,B,C,X( 1),X( 3),X( 9),X(14));
      BODY_32_39(34,C,D,E,T,A,B,X( 2),X( 4),X(10),X(15));
      BODY_32_39(35,B,C,D,E,T,A,X( 3),X( 5),X(11),X( 0));
      BODY_32_39(36,A,B,C,D,E,T,X( 4),X( 6),X(12),X( 1));
      BODY_32_39(37,T,A,B,C,D,E,X( 5),X( 7),X(13),X( 2));
      BODY_32_39(38,E,T,A,B,C,D,X( 6),X( 8),X(14),X( 3));
      BODY_32_39(39,D,E,T,A,B,C,X( 7),X( 9),X(15),X( 4));

      BODY_40_59(40,C,D,E,T,A,B,X( 8),X(10),X( 0),X( 5));
      BODY_40_59(41,B,C,D,E,T,A,X( 9),X(11),X( 1),X( 6));
      BODY_40_59(42,A,B,C,D,E,T,X(10),X(12),X( 2),X( 7));
      BODY_40_59(43,T,A,B,C,D,E,X(11),X(13),X( 3),X( 8));
      BODY_40_59(44,E,T,A,B,C,D,X(12),X(14),X( 4),X( 9));
      BODY_40_59(45,D,E,T,A,B,C,X(13),X(15),X( 5),X(10));
      BODY_40_59(46,C,D,E,T,A,B,X(14),X( 0),X( 6),X(11));
      BODY_40_59(47,B,C,D,E,T,A,X(15),X( 1),X( 7),X(12));
      BODY_40_59(48,A,B,C,D,E,T,X( 0),X( 2),X( 8),X(13));
      BODY_40_59(49,T,A,B,C,D,E,X( 1),X( 3),X( 9),X(14));
      BODY_40_59(50,E,T,A,B,C,D,X( 2),X( 4),X(10),X(15));
      BODY_40_59(51,D,E,T,A,B,C,X( 3),X( 5),X(11),X( 0));
      BODY_40_59(52,C,D,E,T,A,B,X( 4),X( 6),X(12),X( 1));
      BODY_40_59(53,B,C,D,E,T,A,X( 5),X( 7),X(13),X( 2));
      BODY_40_59(54,A,B,C,D,E,T,X( 6),X( 8),X(14),X( 3));
      BODY_40_59(55,T,A,B,C,D,E,X( 7),X( 9),X(15),X( 4));
      BODY_40_59(56,E,T,A,B,C,D,X( 8),X(10),X( 0),X( 5));
      BODY_40_59(57,D,E,T,A,B,C,X( 9),X(11),X( 1),X( 6));
      BODY_40_59(58,C,D,E,T,A,B,X(10),X(12),X( 2),X( 7));
      BODY_40_59(59,B,C,D,E,T,A,X(11),X(13),X( 3),X( 8));

      BODY_60_79(60,A,B,C,D,E,T,X(12),X(14),X( 4),X( 9));
      BODY_60_79(61,T,A,B,C,D,E,X(13),X(15),X( 5),X(10));
      BODY_60_79(62,E,T,A,B,C,D,X(14),X( 0),X( 6),X(11));
      BODY_60_79(63,D,E,T,A,B,C,X(15),X( 1),X( 7),X(12));
      BODY_60_79(64,C,D,E,T,A,B,X( 0),X( 2),X( 8),X(13));
      BODY_60_79(65,B,C,D,E,T,A,X( 1),X( 3),X( 9),X(14));
      BODY_60_79(66,A,B,C,D,E,T,X( 2),X( 4),X(10),X(15));
      BODY_60_79(67,T,A,B,C,D,E,X( 3),X( 5),X(11),X( 0));
      BODY_60_79(68,E,T,A,B,C,D,X( 4),X( 6),X(12),X( 1));
      BODY_60_79(69,D,E,T,A,B,C,X( 5),X( 7),X(13),X( 2));
      BODY_60_79(70,C,D,E,T,A,B,X( 6),X( 8),X(14),X( 3));
      BODY_60_79(71,B,C,D,E,T,A,X( 7),X( 9),X(15),X( 4));
      BODY_60_79(72,A,B,C,D,E,T,X( 8),X(10),X( 0),X( 5));
      BODY_60_79(73,T,A,B,C,D,E,X( 9),X(11),X( 1),X( 6));
      BODY_60_79(74,E,T,A,B,C,D,X(10),X(12),X( 2),X( 7));
      BODY_60_79(75,D,E,T,A,B,C,X(11),X(13),X( 3),X( 8));
      BODY_60_79(76,C,D,E,T,A,B,X(12),X(14),X( 4),X( 9));
      BODY_60_79(77,B,C,D,E,T,A,X(13),X(15),X( 5),X(10));
      BODY_60_79(78,A,B,C,D,E,T,X(14),X( 0),X( 6),X(11));
      BODY_60_79(79,T,A,B,C,D,E,X(15),X( 1),X( 7),X(12));
      
      c->h0=(c->h0+E)&0xffffffffL; 
      c->h1=(c->h1+T)&0xffffffffL;
      c->h2=(c->h2+A)&0xffffffffL;
      c->h3=(c->h3+B)&0xffffffffL;
      c->h4=(c->h4+C)&0xffffffffL;

      if ((int)(--num) <= 0) break;

      A=c->h0;
      B=c->h1;
      C=c->h2;
      D=c->h3;
      E=c->h4;

      W+=SHA_LBLOCK;
            }
      }
#endif

#ifndef DONT_IMPLEMENT_BLOCK_DATA_ORDER
void HASH_BLOCK_DATA_ORDER (SHA_CTX *c, const void *p, FIPS_SHA_SIZE_T num)
      {
      const unsigned char *data=p;
      register unsigned MD32_REG_T A,B,C,D,E,T,l;
#ifndef MD32_XARRAY
      unsigned MD32_REG_T     XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7,
                        XX8, XX9,XX10,XX11,XX12,XX13,XX14,XX15;
#else
      SHA_LONG    XX[16];
#endif

      if(FIPS_selftest_failed())
          return;

      A=c->h0;
      B=c->h1;
      C=c->h2;
      D=c->h3;
      E=c->h4;

      for (;;)
            {

      HOST_c2l(data,l); X( 0)=l;          HOST_c2l(data,l); X( 1)=l;
      BODY_00_15( 0,A,B,C,D,E,T,X( 0));   HOST_c2l(data,l); X( 2)=l;
      BODY_00_15( 1,T,A,B,C,D,E,X( 1));   HOST_c2l(data,l); X( 3)=l;
      BODY_00_15( 2,E,T,A,B,C,D,X( 2));   HOST_c2l(data,l); X( 4)=l;
      BODY_00_15( 3,D,E,T,A,B,C,X( 3));   HOST_c2l(data,l); X( 5)=l;
      BODY_00_15( 4,C,D,E,T,A,B,X( 4));   HOST_c2l(data,l); X( 6)=l;
      BODY_00_15( 5,B,C,D,E,T,A,X( 5));   HOST_c2l(data,l); X( 7)=l;
      BODY_00_15( 6,A,B,C,D,E,T,X( 6));   HOST_c2l(data,l); X( 8)=l;
      BODY_00_15( 7,T,A,B,C,D,E,X( 7));   HOST_c2l(data,l); X( 9)=l;
      BODY_00_15( 8,E,T,A,B,C,D,X( 8));   HOST_c2l(data,l); X(10)=l;
      BODY_00_15( 9,D,E,T,A,B,C,X( 9));   HOST_c2l(data,l); X(11)=l;
      BODY_00_15(10,C,D,E,T,A,B,X(10));   HOST_c2l(data,l); X(12)=l;
      BODY_00_15(11,B,C,D,E,T,A,X(11));   HOST_c2l(data,l); X(13)=l;
      BODY_00_15(12,A,B,C,D,E,T,X(12));   HOST_c2l(data,l); X(14)=l;
      BODY_00_15(13,T,A,B,C,D,E,X(13));   HOST_c2l(data,l); X(15)=l;
      BODY_00_15(14,E,T,A,B,C,D,X(14));
      BODY_00_15(15,D,E,T,A,B,C,X(15));

      BODY_16_19(16,C,D,E,T,A,B,X( 0),X( 0),X( 2),X( 8),X(13));
      BODY_16_19(17,B,C,D,E,T,A,X( 1),X( 1),X( 3),X( 9),X(14));
      BODY_16_19(18,A,B,C,D,E,T,X( 2),X( 2),X( 4),X(10),X(15));
      BODY_16_19(19,T,A,B,C,D,E,X( 3),X( 3),X( 5),X(11),X( 0));

      BODY_20_31(20,E,T,A,B,C,D,X( 4),X( 4),X( 6),X(12),X( 1));
      BODY_20_31(21,D,E,T,A,B,C,X( 5),X( 5),X( 7),X(13),X( 2));
      BODY_20_31(22,C,D,E,T,A,B,X( 6),X( 6),X( 8),X(14),X( 3));
      BODY_20_31(23,B,C,D,E,T,A,X( 7),X( 7),X( 9),X(15),X( 4));
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      BODY_60_79(72,A,B,C,D,E,T,X( 8),X(10),X( 0),X( 5));
      BODY_60_79(73,T,A,B,C,D,E,X( 9),X(11),X( 1),X( 6));
      BODY_60_79(74,E,T,A,B,C,D,X(10),X(12),X( 2),X( 7));
      BODY_60_79(75,D,E,T,A,B,C,X(11),X(13),X( 3),X( 8));
      BODY_60_79(76,C,D,E,T,A,B,X(12),X(14),X( 4),X( 9));
      BODY_60_79(77,B,C,D,E,T,A,X(13),X(15),X( 5),X(10));
      BODY_60_79(78,A,B,C,D,E,T,X(14),X( 0),X( 6),X(11));
      BODY_60_79(79,T,A,B,C,D,E,X(15),X( 1),X( 7),X(12));
      
      c->h0=(c->h0+E)&0xffffffffL; 
      c->h1=(c->h1+T)&0xffffffffL;
      c->h2=(c->h2+A)&0xffffffffL;
      c->h3=(c->h3+B)&0xffffffffL;
      c->h4=(c->h4+C)&0xffffffffL;

      if ((int)(--num) <= 0) break;

      A=c->h0;
      B=c->h1;
      C=c->h2;
      D=c->h3;
      E=c->h4;

            }
      }
#endif

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