/*
 * 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 __OSSL_SHA_H__
#define __OSSL_SHA_H__

/*
 * This is always included last which permits the namespace hacks below
 * to work.
 */
#define SHA256_CTX      OSSL_SHA256_CTX
#define SHA512_CTX      OSSL_SHA512_CTX

/* From include/openssl/sha.h */
# 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. */

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;

# 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;

/*
 * SHA-512 treats input data as a
 * contiguous array of 64 bit
 * wide big-endian values.
 */
# define SHA512_CBLOCK   (SHA_LBLOCK*8)

#  define SHA_LONG64 unsigned long long
#  define U64(C)     C##ULL

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 /* !__OSSL_SHA_H__ */