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/*
* Copyright (c) 2013-2017 IDRIX
* Governed by the Apache License 2.0 the full text of which is contained
* in the file License.txt included in VeraCrypt binary and source
* code distribution packages.
*/
#ifndef _SHA2_H
#define _SHA2_H
#include "Common/Tcdefs.h"
#include "Common/Endian.h"
#include "Crypto/config.h"
#ifdef WOLFCRYPT_BACKEND
#include <wolfssl/options.h>
#include <wolfssl/wolfcrypt/sha256.h>
#include <wolfssl/wolfcrypt/sha512.h>
#include <wolfssl/wolfcrypt/hash.h>
#endif
#if defined(__cplusplus)
extern "C" {
#endif
#define SHA256_DIGEST_SIZE 32
#define SHA256_BLOCK_SIZE 64
#define SHA512_DIGEST_SIZE 64
#define SHA512_BLOCK_SIZE 128
#if CRYPTOPP_BOOL_X64 && !defined(CRYPTOPP_DISABLE_ASM)
#define SHA2_ALIGN CRYPTOPP_ALIGN_DATA(32)
#else
#define SHA2_ALIGN CRYPTOPP_ALIGN_DATA(16)
#endif
#ifdef WOLFCRYPT_BACKEND
typedef struct wc_Sha512 sha512_ctx;
typedef struct wc_Sha256 sha256_ctx;
#else
typedef struct
{ uint_64t count[2];
SHA2_ALIGN uint_64t hash[8];
SHA2_ALIGN uint_64t wbuf[16];
} sha512_ctx;
typedef struct
{ uint_32t count[2];
SHA2_ALIGN uint_32t hash[8];
SHA2_ALIGN uint_32t wbuf[16];
} sha256_ctx;
#endif
void sha512_begin(sha512_ctx* ctx);
void sha512_hash(const unsigned char * source, uint_64t sourceLen, sha512_ctx *ctx);
void sha512_end(unsigned char * result, sha512_ctx* ctx);
void sha512(unsigned char * result, const unsigned char* source, uint_64t sourceLen);
void sha256_begin(sha256_ctx* ctx);
void sha256_hash(const unsigned char * source, uint_32t sourceLen, sha256_ctx *ctx);
void sha256_end(unsigned char * result, sha256_ctx* ctx);
void sha256(unsigned char * result, const unsigned char* source, uint_32t sourceLen);
#if defined(__cplusplus)
}
#endif
#endif
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