/* IBM_PROLOG_BEGIN_TAG                                                   */
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/* $Source: src/include/securerom/contrib/sha512.H $                      */
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/* IBM_PROLOG_END_TAG                                                     */
#ifndef SHA512_H
#define SHA512_H

#define SHA512_BLOCK_LENGTH 128
#define SHA512_DIGEST_LENGTH 64

#include <stdlib.h>

typedef uint8_t SHA512_t[SHA512_DIGEST_LENGTH];

typedef uint8_t  sha2_byte;     /* Exactly 1 byte */
typedef uint32_t sha2_word32;   /* Exactly 4 bytes */
typedef uint64_t sha2_word64;   /* Exactly 8 bytes */

typedef struct _SHA512_CTX
{
    uint64_t state[8];
    uint64_t bitcount[2];
    uint8_t buffer[SHA512_BLOCK_LENGTH];
} SHA512_CTX;


extern "C"
void SHA512_Init(SHA512_CTX* context);
extern "C"
void SHA512_Update(SHA512_CTX* context, const sha2_byte *data, size_t len);
extern "C"
void SHA512_Final(SHA512_CTX* context, SHA512_t *result);
extern "C"
void SHA512_Hash(const sha2_byte *data, size_t len, SHA512_t *result);

#endif