/**
* \file sha512.h
* \brief This file contains SHA-384 and SHA-512 definitions and functions.
*
* The Secure Hash Algorithms 384 and 512 (SHA-384 and SHA-512) cryptographic
* hash functions are defined in <em>FIPS 180-4: Secure Hash Standard (SHS)</em>.
*/
/*
* Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved
* SPDX-License-Identifier: GPL-2.0
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This file is part of Mbed TLS (https://tls.mbed.org)
*/
#ifndef MBEDTLS_SHA512_H
#define MBEDTLS_SHA512_H
#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#include <stddef.h>
#include <stdint.h>
#define MBEDTLS_ERR_SHA512_HW_ACCEL_FAILED -0x0039 /**< SHA-512 hardware accelerator failed */
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_SHA512_ALT)
// Regular implementation
//
/**
* \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 mbedtls_sha512_starts_ret().
*/
typedef struct mbedtls_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. */
}
mbedtls_sha512_context;
#else /* MBEDTLS_SHA512_ALT */
#include "sha512_alt.h"
#endif /* MBEDTLS_SHA512_ALT */
/**
* \brief This function initializes a SHA-512 context.
*
* \param ctx The SHA-512 context to initialize.
*/
void mbedtls_sha512_init(mbedtls_sha512_context *ctx);
/**
* \brief This function clears a SHA-512 context.
*
* \param ctx The SHA-512 context to clear.
*/
void mbedtls_sha512_free(mbedtls_sha512_context *ctx);
/**
* \brief This function clones the state of a SHA-512 context.
*
* \param dst The destination context.
* \param src The context to clone.
*/
void mbedtls_sha512_clone(mbedtls_sha512_context *dst,
const mbedtls_sha512_context *src);
/**
* \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 mbedtls_sha512_starts_ret(mbedtls_sha512_context *ctx, int is384);
/**
* \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 mbedtls_sha512_update_ret(mbedtls_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. This function is for
* internal use only.
*
* \param ctx The SHA-512 context.
* \param output The SHA-384 or SHA-512 checksum result.
*
* \return \c 0 on success.
*/
int mbedtls_sha512_finish_ret(mbedtls_sha512_context *ctx,
unsigned char output[64]);
/**
* \brief This function processes a single data block within
* the ongoing SHA-512 computation.
*
* \param ctx The SHA-512 context.
* \param data The buffer holding one block of data.
*
* \return \c 0 on success.
*/
int mbedtls_internal_sha512_process(mbedtls_sha512_context *ctx,
const unsigned char data[128]);
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
#if defined(MBEDTLS_DEPRECATED_WARNING)
#define MBEDTLS_DEPRECATED __attribute__((deprecated))
#else
#define MBEDTLS_DEPRECATED
#endif
/**
* \brief This function starts a SHA-384 or SHA-512 checksum
* calculation.
*
* \deprecated Superseded by mbedtls_sha512_starts_ret() in 2.7.0
*
* \param ctx The SHA-512 context to initialize.
* \param is384 Determines which function to use:
* 0: Use SHA-512, or 1: Use SHA-384.
*/
MBEDTLS_DEPRECATED void mbedtls_sha512_starts(mbedtls_sha512_context *ctx,
int is384);
/**
* \brief This function feeds an input buffer into an ongoing
* SHA-512 checksum calculation.
*
* \deprecated Superseded by mbedtls_sha512_update_ret() in 2.7.0.
*
* \param ctx The SHA-512 context.
* \param input The buffer holding the data.
* \param ilen The length of the input data.
*/
MBEDTLS_DEPRECATED void mbedtls_sha512_update(mbedtls_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.
*
* \deprecated Superseded by mbedtls_sha512_finish_ret() in 2.7.0.
*
* \param ctx The SHA-512 context.
* \param output The SHA-384 or SHA-512 checksum result.
*/
MBEDTLS_DEPRECATED void mbedtls_sha512_finish(mbedtls_sha512_context *ctx,
unsigned char output[64]);
/**
* \brief This function processes a single data block within
* the ongoing SHA-512 computation. This function is for
* internal use only.
*
* \deprecated Superseded by mbedtls_internal_sha512_process() in 2.7.0.
*
* \param ctx The SHA-512 context.
* \param data The buffer holding one block of data.
*/
MBEDTLS_DEPRECATED void mbedtls_sha512_process(
mbedtls_sha512_context *ctx,
const unsigned char data[128]);
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
/**
* \brief This function calculates the SHA-512 or SHA-384
* checksum of a buffer.
*
* The function allocates the context, performs the
* calculation, and frees the context.
*
* The SHA-512 result is calculated as
* output = SHA-512(input buffer).
*
* \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.
* \param is384 Determines which function to use:
* 0: Use SHA-512, or 1: Use SHA-384.
*
* \return \c 0 on success.
*/
int mbedtls_sha512_ret(const unsigned char *input,
size_t ilen,
unsigned char output[64],
int is384);
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
#if defined(MBEDTLS_DEPRECATED_WARNING)
#define MBEDTLS_DEPRECATED __attribute__((deprecated))
#else
#define MBEDTLS_DEPRECATED
#endif
/**
* \brief This function calculates the SHA-512 or SHA-384
* checksum of a buffer.
*
* The function allocates the context, performs the
* calculation, and frees the context.
*
* The SHA-512 result is calculated as
* output = SHA-512(input buffer).
*
* \deprecated Superseded by mbedtls_sha512_ret() in 2.7.0
*
* \param input The buffer holding the data.
* \param ilen The length of the input data.
* \param output The SHA-384 or SHA-512 checksum result.
* \param is384 Determines which function to use:
* 0: Use SHA-512, or 1: Use SHA-384.
*/
MBEDTLS_DEPRECATED void mbedtls_sha512(const unsigned char *input,
size_t ilen,
unsigned char output[64],
int is384);
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
/**
* \brief The SHA-384 or SHA-512 checkup routine.
*
* \return \c 0 on success.
* \return \c 1 on failure.
*/
int mbedtls_sha512_self_test(int verbose);
#ifdef __cplusplus
}
#endif
#endif /* mbedtls_sha512.h */