Momentum-Apps/flipbip/lib/crypto/sha2.h

/**
 * Copyright (c) 2000-2001 Aaron D. Gifford
 * Copyright (c) 2013-2014 Pavol Rusnak
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holder nor the names of contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef __SHA2_H__
#define __SHA2_H__

#include <stdint.h>
#include <stddef.h>
#include "byte_order.h"

#define SHA1_BLOCK_LENGTH 64
#define SHA1_DIGEST_LENGTH 20
#define SHA1_DIGEST_STRING_LENGTH (SHA1_DIGEST_LENGTH * 2 + 1)
#define SHA256_BLOCK_LENGTH 64
#define SHA256_DIGEST_LENGTH 32
#define SHA256_DIGEST_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1)
#define SHA512_BLOCK_LENGTH 128
#define SHA512_DIGEST_LENGTH 64
#define SHA512_DIGEST_STRING_LENGTH (SHA512_DIGEST_LENGTH * 2 + 1)

typedef struct _SHA1_CTX {
    uint32_t state[5];
    uint64_t bitcount;
    uint32_t buffer[SHA1_BLOCK_LENGTH / sizeof(uint32_t)];
} SHA1_CTX;
typedef struct _SHA256_CTX {
    uint32_t state[8];
    uint64_t bitcount;
    uint32_t buffer[SHA256_BLOCK_LENGTH / sizeof(uint32_t)];
} SHA256_CTX;
typedef struct _SHA512_CTX {
    uint64_t state[8];
    uint64_t bitcount[2];
    uint64_t buffer[SHA512_BLOCK_LENGTH / sizeof(uint64_t)];
} SHA512_CTX;

extern const uint32_t sha256_initial_hash_value[8];
extern const uint64_t sha512_initial_hash_value[8];

void sha1_Transform(const uint32_t* state_in, const uint32_t* data, uint32_t* state_out);
void sha1_Init(SHA1_CTX*);
void sha1_Update(SHA1_CTX*, const uint8_t*, size_t);
void sha1_Final(SHA1_CTX*, uint8_t[SHA1_DIGEST_LENGTH]);
char* sha1_End(SHA1_CTX*, char[SHA1_DIGEST_STRING_LENGTH]);
void sha1_Raw(const uint8_t*, size_t, uint8_t[SHA1_DIGEST_LENGTH]);
char* sha1_Data(const uint8_t*, size_t, char[SHA1_DIGEST_STRING_LENGTH]);

void sha256_Transform(const uint32_t* state_in, const uint32_t* data, uint32_t* state_out);
void sha256_Init(SHA256_CTX*);
void sha256_Init_ex(SHA256_CTX*, const uint32_t state[8], uint64_t bitcount);
void sha256_Update(SHA256_CTX*, const uint8_t*, size_t);
void sha256_Final(SHA256_CTX*, uint8_t[SHA256_DIGEST_LENGTH]);
char* sha256_End(SHA256_CTX*, char[SHA256_DIGEST_STRING_LENGTH]);
void sha256_Raw(const uint8_t*, size_t, uint8_t[SHA256_DIGEST_LENGTH]);
char* sha256_Data(const uint8_t*, size_t, char[SHA256_DIGEST_STRING_LENGTH]);

void sha512_Transform(const uint64_t* state_in, const uint64_t* data, uint64_t* state_out);
void sha512_Init(SHA512_CTX*);
void sha512_Update(SHA512_CTX*, const uint8_t*, size_t);
void sha512_Final(SHA512_CTX*, uint8_t[SHA512_DIGEST_LENGTH]);
char* sha512_End(SHA512_CTX*, char[SHA512_DIGEST_STRING_LENGTH]);
void sha512_Raw(const uint8_t*, size_t, uint8_t[SHA512_DIGEST_LENGTH]);
char* sha512_Data(const uint8_t*, size_t, char[SHA512_DIGEST_STRING_LENGTH]);

#endif