text: /* 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/e_os2.h>
  #include <openssl/md5.h>
  
  #ifdef MD5_ASM
  # if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \
       defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)
  #  define md5_block_data_order md5_block_asm_data_order
  # elif defined(__ia64) || defined(__ia64__) || defined(_M_IA64)
  #  define md5_block_data_order md5_block_asm_data_order
  # elif defined(__sparc) || defined(__sparc__)
  #  define md5_block_data_order md5_block_asm_data_order
  # endif
  #endif
  
  void md5_block_data_order(MD5_CTX *c, const void *p, size_t num);
  
  #define DATA_ORDER_IS_LITTLE_ENDIAN
  
  #define HASH_LONG               MD5_LONG
  #define HASH_CTX                MD5_CTX
  #define HASH_CBLOCK             MD5_CBLOCK
  #define HASH_UPDATE             MD5_Update
  #define HASH_TRANSFORM          MD5_Transform
  #define HASH_FINAL              MD5_Final
  #define HASH_MAKE_STRING(c,s)   do {    \
          unsigned long ll;               \
          ll=(c)->A; (void)HOST_l2c(ll,(s));      \
          ll=(c)->B; (void)HOST_l2c(ll,(s));      \
          ll=(c)->C; (void)HOST_l2c(ll,(s));      \
          ll=(c)->D; (void)HOST_l2c(ll,(s));      \
          } while (0)
  #define HASH_BLOCK_DATA_ORDER   md5_block_data_order
  
  #include "internal/md32_common.h"
  
  /*-
  #define F(x,y,z)        (((x) & (y))  |  ((~(x)) & (z)))
  #define G(x,y,z)        (((x) & (z))  |  ((y) & (~(z))))
  */
  
  /*
   * As pointed out by Wei Dai <weidai@eskimo.com>, the above can be simplified
   * to the code below.  Wei attributes these optimizations to Peter Gutmann's
   * SHS code, and he attributes it to Rich Schroeppel.
   */
  #define F(b,c,d)        ((((c) ^ (d)) & (b)) ^ (d))
  #define G(b,c,d)        ((((b) ^ (c)) & (d)) ^ (c))
  #define H(b,c,d)        ((b) ^ (c) ^ (d))
  #define I(b,c,d)        (((~(d)) | (b)) ^ (c))
  
  #define R0(a,b,c,d,k,s,t) { \
          a+=((k)+(t)+F((b),(c),(d))); \
          a=ROTATE(a,s); \
          a+=b; };\
  
  #define R1(a,b,c,d,k,s,t) { \
          a+=((k)+(t)+G((b),(c),(d))); \
          a=ROTATE(a,s); \
          a+=b; };
  
  #define R2(a,b,c,d,k,s,t) { \
          a+=((k)+(t)+H((b),(c),(d))); \
          a=ROTATE(a,s); \
          a+=b; };
  
  #define R3(a,b,c,d,k,s,t) { \
          a+=((k)+(t)+I((b),(c),(d))); \
          a=ROTATE(a,s); \
          a+=b; };
  