/*

 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the OpenSSL license (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

#ifndef HEADER_SHA_H

# define HEADER_SHA_H

# include <openssl/e_os2.h>

# include <stddef.h>

#ifdef  __cplusplus

extern "C" {

#endif

/*-

 * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 * ! SHA_LONG has to be at least 32 bits wide.                    !

 * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 */

# define SHA_LONG unsigned int

# 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;

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);

# define SHA256_CBLOCK   (SHA_LBLOCK*4)/* SHA-256 treats input data as a

                                        * contiguous array of 32 bit wide

                                        * big-endian values. */

typedef struct SHA256state_st {

    SHA_LONG h[8];

    SHA_LONG Nl, Nh;

    SHA_LONG data[SHA_LBLOCK];

    unsigned int num, md_len;

} SHA256_CTX;

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);

# define SHA224_DIGEST_LENGTH    28

# define SHA256_DIGEST_LENGTH    32

# define SHA384_DIGEST_LENGTH    48

# define SHA512_DIGEST_LENGTH    64

/*

 * 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.

 */

/*

 * SHA-512 treats input data as a

 * contiguous array of 64 bit

 * wide big-endian values.

 */

# define SHA512_CBLOCK   (SHA_LBLOCK*8)

# 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;

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);

#ifdef  __cplusplus

}

#endif

#endif