text: /* crypto/sha/sha.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.]
   */
  
  #ifndef HEADER_SHA_H
  #define HEADER_SHA_H
  
  #include "openssl/e_os2.h"
  #include <stddef.h>
  
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
  #if defined(OPENSSL_NO_SHA) || (defined(OPENSSL_NO_SHA0) && defined(OPENSSL_NO_SHA1))
  #error SHA is disabled.
  #endif
  
  #if defined(OPENSSL_FIPS)
  #define FIPS_SHA_SIZE_T size_t
  #endif
  
  /*
   * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
   * ! SHA_LONG has to be at least 32 bits wide. If it's wider, then !
   * ! SHA_LONG_LOG2 has to be defined along.                        !
   * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
   */
  
  #if defined(__LP32__)
  #define SHA_LONG unsigned long
  #elif defined(OPENSSL_SYS_CRAY) || defined(__ILP64__)
  #define SHA_LONG unsigned long
  #define SHA_LONG_LOG2 3
  #else
  #define SHA_LONG unsigned int
  #endif
  
  #define SHA_LBLOCK	16
  #define SHA_CBLOCK	(SHA_LBLOCK*4)	/* SHA treats input data as a
  					 * contiguous array of 32 bit
  					 * wide big-endian values. */
  #define SHA_LAST_BLOCK  (SHA_CBLOCK-8)
  #define SHA_DIGEST_LENGTH 20
  
  typedef struct SHAstate_st
  	{
  	SHA_LONG h0,h1,h2,h3,h4;
  	SHA_LONG Nl,Nh;
  	SHA_LONG data[SHA_LBLOCK];
  	unsigned int num;
  	} SHA_CTX;
  
  #ifndef OPENSSL_NO_SHA0
  int SHA_Init(SHA_CTX *c);
  int SHA_Update(SHA_CTX *c, const void *data, size_t len);
  int SHA_Final(unsigned char *md, SHA_CTX *c);
  unsigned char *SHA(const unsigned char *d, size_t n, unsigned char *md);
  void SHA_Transform(SHA_CTX *c, const unsigned char *data);
  #endif
  #ifndef OPENSSL_NO_SHA1
  int SHA1_Init(SHA_CTX *c);
  int SHA1_Update(SHA_CTX *c, const void *data, size_t len);
  int SHA1_Final(unsigned char *md, SHA_CTX *c);
  unsigned char *SHA1(const unsigned char *d, size_t n, unsigned char *md);
  void SHA1_Transform(SHA_CTX *c, const unsigned char *data);
  #endif
  
  #define SHA256_CBLOCK	(SHA_LBLOCK*4)	/* SHA-256 treats input data as a
  					 * contiguous array of 32 bit
  					 * wide big-endian values. */
  #define SHA224_DIGEST_LENGTH	28
  #define SHA256_DIGEST_LENGTH	32
  
  typedef struct SHA256state_st
  	{
  	SHA_LONG h[8];
  	SHA_LONG Nl,Nh;
  	SHA_LONG data[SHA_LBLOCK];
  	unsigned int num,md_len;
  	} SHA256_CTX;
  
  #ifndef OPENSSL_NO_SHA256
  int SHA224_Init(SHA256_CTX *c);
  int SHA224_Update(SHA256_CTX *c, const void *data, size_t len);
  int SHA224_Final(unsigned char *md, SHA256_CTX *c);
  unsigned char *SHA224(const unsigned char *d, size_t n,unsigned char *md);
  int SHA256_Init(SHA256_CTX *c);
  int SHA256_Update(SHA256_CTX *c, const void *data, size_t len);
  int SHA256_Final(unsigned char *md, SHA256_CTX *c);
  unsigned char *SHA256(const unsigned char *d, size_t n,unsigned char *md);
  void SHA256_Transform(SHA256_CTX *c, const unsigned char *data);
  #endif
  
  #define SHA384_DIGEST_LENGTH	48
  #define SHA512_DIGEST_LENGTH	64
  
  #ifndef OPENSSL_NO_SHA512
  /*
   * Unlike 32-bit digest algorithms, SHA-512 *relies* on SHA_LONG64
   * being exactly 64-bit wide. See Implementation Notes in sha512.c
   * for further details.
   */
  #define SHA512_CBLOCK	(SHA_LBLOCK*8)	/* SHA-512 treats input data as a
  					 * contiguous array of 64 bit
  					 * wide big-endian values. */
  #if (defined(_WIN32) || defined(_WIN64)) && !defined(__MINGW32__)
  #define SHA_LONG64 unsigned __int64
  #define U64(C)     C##UI64
  #elif defined(__arch64__)
  #define SHA_LONG64 unsigned long
  #define U64(C)     C##UL
  #else
  #define SHA_LONG64 unsigned long long
  #define U64(C)     C##ULL
  #endif
  
  typedef struct SHA512state_st
  	{
  	SHA_LONG64 h[8];
  	SHA_LONG64 Nl,Nh;
  	union {
  		SHA_LONG64	d[SHA_LBLOCK];
  		unsigned char	p[SHA512_CBLOCK];
  	} u;
  	unsigned int num,md_len;
  	} SHA512_CTX;
  #endif
  
  #ifndef OPENSSL_NO_SHA512
  int SHA384_Init(SHA512_CTX *c);
  int SHA384_Update(SHA512_CTX *c, const void *data, size_t len);
  int SHA384_Final(unsigned char *md, SHA512_CTX *c);
  unsigned char *SHA384(const unsigned char *d, size_t n,unsigned char *md);
  int SHA512_Init(SHA512_CTX *c);
  int SHA512_Update(SHA512_CTX *c, const void *data, size_t len);
  int SHA512_Final(unsigned char *md, SHA512_CTX *c);
  unsigned char *SHA512(const unsigned char *d, size_t n,unsigned char *md);
  void SHA512_Transform(SHA512_CTX *c, const unsigned char *data);
  #endif
  
  #ifdef  __cplusplus
  }
  #endif
  
  #endif
  