/* IBM_PROLOG_BEGIN_TAG                                                   */
/* This is an automatically generated prolog.                             */
/*                                                                        */
/* $Source: src/include/securerom/sha512.H $                              */
/*                                                                        */
/* OpenPOWER HostBoot Project                                             */
/*                                                                        */
/* Contributors Listed Below - COPYRIGHT 2016,2017                        */
/* [+] International Business Machines Corp.                              */
/*                                                                        */
/*                                                                        */
/* Licensed under the Apache License, Version 2.0 (the "License");        */
/* you may not use this file except in compliance with the License.       */
/* You may obtain a copy of the License at                                */
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/*     http://www.apache.org/licenses/LICENSE-2.0                         */
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/* distributed under the License is distributed on an "AS IS" BASIS,      */
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/* implied. See the License for the specific language governing           */
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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 __attribute__((aligned(8))) sha2_hash_t[ SHA512_DIGEST_LENGTH / sizeof(uint8_t) ];

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;

void SHA512_Init(SHA512_CTX* context);
void SHA512_Update(SHA512_CTX* context, const sha2_byte *data, size_t len);
void SHA512_Final(SHA512_CTX* context, sha2_hash_t *result);

void SHA512_Hash(const sha2_byte *data, size_t len, sha2_hash_t *result);

#endif