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90/****************************************************************************
* include/crypto/sha2.h
*
* SPDX-License-Identifier: BSD-3-Clause
* SPDX-FileCopyrightText: 2000-2001, Aaron D. Gifford
* SPDX-FileContributor: Aaron D. Gifford <me@aarongifford.com>
*
* 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 __INCLUDE_CRYPTO_SHA2_H
#define __INCLUDE_CRYPTO_SHA2_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <sys/types.h>
/* SHA-256/384/512 Various Length Definitions */
#define SHA224_BLOCK_LENGTH 64
#define SHA224_DIGEST_LENGTH 28
#define SHA224_DIGEST_STRING_LENGTH (SHA224_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 SHA384_BLOCK_LENGTH 128
#define SHA384_DIGEST_LENGTH 48
#define SHA384_DIGEST_STRING_LENGTH (SHA384_DIGEST_LENGTH * 2 + 1)
#define SHA512_BLOCK_LENGTH 128
#define SHA512_DIGEST_LENGTH 64
#define SHA512_DIGEST_STRING_LENGTH (SHA512_DIGEST_LENGTH * 2 + 1)
/* SHA-256/384/512 Context Structure */
typedef struct _SHA2_CTX
{
union
{
uint32_t st32[8];
uint64_t st64[8];
} state;
uint64_t bitcount[2];
uint8_t buffer[SHA512_BLOCK_LENGTH];
} SHA2_CTX;
void sha224init(FAR SHA2_CTX *);
void sha224update(FAR SHA2_CTX *, FAR const void *, size_t);
void sha224final(FAR uint8_t *, FAR SHA2_CTX *);
void sha256init(FAR SHA2_CTX *);
void sha256update(FAR SHA2_CTX *, FAR const void *, size_t);
void sha256final(FAR uint8_t *, FAR SHA2_CTX *);
void sha384init(FAR SHA2_CTX *);
void sha384update(FAR SHA2_CTX *, FAR const void *, size_t);
void sha384final(FAR uint8_t *, FAR SHA2_CTX *);
void sha512init(FAR SHA2_CTX *);
void sha512update(FAR SHA2_CTX *, FAR const void *, size_t);
void sha512final(FAR uint8_t *, FAR SHA2_CTX *);
#endif /* __INCLUDE_CRYPTO_SHA2_H */