// SPDX-License-Identifier: Apache-2.0
|
/*
|
* FIPS-180-2 compliant SHA-384/512 implementation
|
*
|
* Copyright (c) 2019 Fuzhou Rockchip Electronics Co., Ltd
|
*
|
* 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
|
*
|
* http://www.apache.org/licenses/LICENSE-2.0
|
*
|
* Unless required by applicable law or agreed to in writing, software
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
* See the License for the specific language governing permissions and
|
* limitations under the License.
|
*
|
* This file is part of mbed TLS (https://tls.mbed.org)
|
*/
|
/*
|
* The SHA-512 Secure Hash Standard was published by NIST in 2002.
|
*
|
* http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf
|
*/
|
|
#ifndef _SHA512_H
|
#define _SHA512_H
|
|
#ifdef __cplusplus
|
extern "C" {
|
#endif
|
|
/**
|
* \brief The SHA-512 context structure.
|
*
|
* The structure is used both for SHA-384 and for SHA-512
|
* checksum calculations. The choice between these two is
|
* made in the call to sha512_starts().
|
*/
|
typedef struct sha512_context {
|
uint64_t total[2]; /*!< The number of Bytes processed. */
|
uint64_t state[8]; /*!< The intermediate digest state. */
|
unsigned char buffer[128]; /*!< The data block being processed. */
|
int is384; /*!< Determines which function to use:
|
0: Use SHA-512, or 1: Use SHA-384. */
|
} sha512_context;
|
|
/**
|
* \brief This function starts a SHA-384 or SHA-512 checksum
|
* calculation.
|
*
|
* \param ctx The SHA-512 context to initialize.
|
* \param is384 Determines which function to use:
|
* 0: Use SHA-512, or 1: Use SHA-384.
|
*
|
* \return \c 0 on success.
|
*/
|
int sha512_starts(sha512_context *ctx);
|
|
/**
|
* \brief This function feeds an input buffer into an ongoing
|
* SHA-512 checksum calculation.
|
*
|
* \param ctx The SHA-512 context.
|
* \param input The buffer holding the input data.
|
* \param ilen The length of the input data.
|
*
|
* \return \c 0 on success.
|
*/
|
int sha512_update(sha512_context *ctx, const unsigned char *input, size_t ilen);
|
|
/**
|
* \brief This function finishes the SHA-512 operation, and writes
|
* the result to the output buffer.
|
*
|
* \param ctx The SHA-512 context.
|
* \param output The SHA-384 or SHA-512 checksum result.
|
*
|
* \return \c 0 on success.
|
*/
|
int sha512_finish(sha512_context *ctx, unsigned char output[64]);
|
|
/**
|
* \brief This function starts SHA-512 checksum for the input data.
|
*
|
* \param input The buffer holding the input data.
|
* \param ilen The length of the input data.
|
* \param output The SHA-384 or SHA-512 checksum result.
|
*/
|
void sha512_csum(const unsigned char *input, unsigned int ilen,
|
unsigned char output[64]);
|
|
#ifdef __cplusplus
|
}
|
#endif
|
|
#endif /* sha512.h */
|
