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/* Sha3.h -- SHA-3 Hash

: Igor Pavlov : Public domain */

#ifndef ZIP7_INC_MD5_H

#define ZIP7_INC_MD5_H

#include "7zTypes.h"

EXTERN_C_BEGIN

#define SHA3_NUM_STATE_WORDS 25

#define SHA3_BLOCK_SIZE_FROM_DIGEST_SIZE(digestSize) \

(SHA3_NUM_STATE_WORDS * 8 - (digestSize) * 2)

typedef struct

{

UInt32 count; // < blockSize

UInt32 blockSize; // <= SHA3_NUM_STATE_WORDS * 8

UInt64 _pad1[3];

// we want 32-bytes alignment here

UInt64 state[SHA3_NUM_STATE_WORDS];

UInt64 _pad2[3];

// we want 64-bytes alignment here

Byte buffer[SHA3_NUM_STATE_WORDS * 8]; // last bytes will be unused with predefined blockSize values

} CSha3;

#define Sha3_SET_blockSize(p, blockSize) { (p)->blockSize = (blockSize); }

void Sha3_Init(CSha3 *p);

void Sha3_Update(CSha3 *p, const Byte *data, size_t size);

void Sha3_Final(CSha3 *p, Byte *digest, unsigned digestSize, unsigned shake);

EXTERN_C_END

#endif