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325 lines
11 KiB
C
325 lines
11 KiB
C
/**
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* \file sha1.h
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*
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* \brief This file contains SHA-1 definitions and functions.
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*
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* The Secure Hash Algorithm 1 (SHA-1) cryptographic hash function is defined in
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* <em>FIPS 180-4: Secure Hash Standard (SHS)</em>.
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*
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* \warning SHA-1 is considered a weak message digest and its use constitutes
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* a security risk. We recommend considering stronger message
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* digests instead.
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*/
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/*
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* Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved
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* SPDX-License-Identifier: GPL-2.0
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* This file is part of Mbed TLS (https://tls.mbed.org)
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*/
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#ifndef MBEDTLS_SHA1_H
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#define MBEDTLS_SHA1_H
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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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#include <stddef.h>
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#include <stdint.h>
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#define MBEDTLS_ERR_SHA1_HW_ACCEL_FAILED -0x0035 /**< SHA-1 hardware accelerator failed */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if !defined(MBEDTLS_SHA1_ALT)
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// Regular implementation
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//
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/**
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* \brief The SHA-1 context structure.
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*
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* \warning SHA-1 is considered a weak message digest and its use
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* constitutes a security risk. We recommend considering
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* stronger message digests instead.
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*
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*/
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typedef struct mbedtls_sha1_context {
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uint32_t total[2]; /*!< The number of Bytes processed. */
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uint32_t state[5]; /*!< The intermediate digest state. */
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unsigned char buffer[64]; /*!< The data block being processed. */
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}
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mbedtls_sha1_context;
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#else /* MBEDTLS_SHA1_ALT */
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#include "sha1_alt.h"
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#endif /* MBEDTLS_SHA1_ALT */
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/**
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* \brief This function initializes a SHA-1 context.
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*
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* \warning SHA-1 is considered a weak message digest and its use
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* constitutes a security risk. We recommend considering
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* stronger message digests instead.
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*
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* \param ctx The SHA-1 context to initialize.
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*
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*/
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void mbedtls_sha1_init(mbedtls_sha1_context *ctx);
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/**
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* \brief This function clears a SHA-1 context.
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*
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* \warning SHA-1 is considered a weak message digest and its use
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* constitutes a security risk. We recommend considering
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* stronger message digests instead.
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*
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* \param ctx The SHA-1 context to clear.
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*
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*/
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void mbedtls_sha1_free(mbedtls_sha1_context *ctx);
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/**
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* \brief This function clones the state of a SHA-1 context.
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*
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* \warning SHA-1 is considered a weak message digest and its use
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* constitutes a security risk. We recommend considering
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* stronger message digests instead.
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*
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* \param dst The SHA-1 context to clone to.
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* \param src The SHA-1 context to clone from.
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*
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*/
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void mbedtls_sha1_clone(mbedtls_sha1_context *dst,
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const mbedtls_sha1_context *src);
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/**
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* \brief This function starts a SHA-1 checksum calculation.
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*
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* \warning SHA-1 is considered a weak message digest and its use
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* constitutes a security risk. We recommend considering
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* stronger message digests instead.
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*
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* \param ctx The SHA-1 context to initialize.
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*
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* \return \c 0 on success.
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*
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*/
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int mbedtls_sha1_starts_ret(mbedtls_sha1_context *ctx);
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/**
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* \brief This function feeds an input buffer into an ongoing SHA-1
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* checksum calculation.
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*
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* \warning SHA-1 is considered a weak message digest and its use
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* constitutes a security risk. We recommend considering
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* stronger message digests instead.
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*
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* \param ctx The SHA-1 context.
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* \param input The buffer holding the input data.
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* \param ilen The length of the input data.
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*
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* \return \c 0 on success.
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*/
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int mbedtls_sha1_update_ret(mbedtls_sha1_context *ctx,
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const unsigned char *input,
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size_t ilen);
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/**
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* \brief This function finishes the SHA-1 operation, and writes
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* the result to the output buffer.
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*
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* \warning SHA-1 is considered a weak message digest and its use
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* constitutes a security risk. We recommend considering
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* stronger message digests instead.
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*
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* \param ctx The SHA-1 context.
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* \param output The SHA-1 checksum result.
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*
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* \return \c 0 on success.
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*/
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int mbedtls_sha1_finish_ret(mbedtls_sha1_context *ctx,
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unsigned char output[20]);
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/**
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* \brief SHA-1 process data block (internal use only).
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*
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* \warning SHA-1 is considered a weak message digest and its use
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* constitutes a security risk. We recommend considering
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* stronger message digests instead.
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*
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* \param ctx The SHA-1 context.
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* \param data The data block being processed.
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*
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* \return \c 0 on success.
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*
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*/
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int mbedtls_internal_sha1_process(mbedtls_sha1_context *ctx,
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const unsigned char data[64]);
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#if !defined(MBEDTLS_DEPRECATED_REMOVED)
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#if defined(MBEDTLS_DEPRECATED_WARNING)
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#define MBEDTLS_DEPRECATED __attribute__((deprecated))
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#else
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#define MBEDTLS_DEPRECATED
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#endif
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/**
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* \brief This function starts a SHA-1 checksum calculation.
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*
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* \warning SHA-1 is considered a weak message digest and its use
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* constitutes a security risk. We recommend considering
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* stronger message digests instead.
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*
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* \deprecated Superseded by mbedtls_sha1_starts_ret() in 2.7.0.
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*
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* \param ctx The SHA-1 context to initialize.
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*
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*/
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MBEDTLS_DEPRECATED void mbedtls_sha1_starts(mbedtls_sha1_context *ctx);
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/**
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* \brief This function feeds an input buffer into an ongoing SHA-1
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* checksum calculation.
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*
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* \warning SHA-1 is considered a weak message digest and its use
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* constitutes a security risk. We recommend considering
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* stronger message digests instead.
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*
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* \deprecated Superseded by mbedtls_sha1_update_ret() in 2.7.0.
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*
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* \param ctx The SHA-1 context.
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* \param input The buffer holding the input data.
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* \param ilen The length of the input data.
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*
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*/
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MBEDTLS_DEPRECATED void mbedtls_sha1_update(mbedtls_sha1_context *ctx,
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const unsigned char *input,
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size_t ilen);
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/**
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* \brief This function finishes the SHA-1 operation, and writes
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* the result to the output buffer.
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*
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* \warning SHA-1 is considered a weak message digest and its use
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* constitutes a security risk. We recommend considering
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* stronger message digests instead.
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*
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* \deprecated Superseded by mbedtls_sha1_finish_ret() in 2.7.0.
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*
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* \param ctx The SHA-1 context.
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* \param output The SHA-1 checksum result.
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*
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*/
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MBEDTLS_DEPRECATED void mbedtls_sha1_finish(mbedtls_sha1_context *ctx,
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unsigned char output[20]);
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/**
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* \brief SHA-1 process data block (internal use only).
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*
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* \warning SHA-1 is considered a weak message digest and its use
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* constitutes a security risk. We recommend considering
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* stronger message digests instead.
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*
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* \deprecated Superseded by mbedtls_internal_sha1_process() in 2.7.0.
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*
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* \param ctx The SHA-1 context.
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* \param data The data block being processed.
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*
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*/
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MBEDTLS_DEPRECATED void mbedtls_sha1_process(mbedtls_sha1_context *ctx,
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const unsigned char data[64]);
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#undef MBEDTLS_DEPRECATED
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#endif /* !MBEDTLS_DEPRECATED_REMOVED */
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/**
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* \brief This function calculates the SHA-1 checksum of a buffer.
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*
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* The function allocates the context, performs the
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* calculation, and frees the context.
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*
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* The SHA-1 result is calculated as
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* output = SHA-1(input buffer).
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*
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* \warning SHA-1 is considered a weak message digest and its use
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* constitutes a security risk. We recommend considering
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* stronger message digests instead.
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*
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* \param input The buffer holding the input data.
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* \param ilen The length of the input data.
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* \param output The SHA-1 checksum result.
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*
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* \return \c 0 on success.
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*
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*/
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int mbedtls_sha1_ret(const unsigned char *input,
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size_t ilen,
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unsigned char output[20]);
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#if !defined(MBEDTLS_DEPRECATED_REMOVED)
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#if defined(MBEDTLS_DEPRECATED_WARNING)
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#define MBEDTLS_DEPRECATED __attribute__((deprecated))
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#else
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#define MBEDTLS_DEPRECATED
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#endif
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/**
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* \brief This function calculates the SHA-1 checksum of a buffer.
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*
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* The function allocates the context, performs the
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* calculation, and frees the context.
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*
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* The SHA-1 result is calculated as
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* output = SHA-1(input buffer).
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*
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* \warning SHA-1 is considered a weak message digest and its use
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* constitutes a security risk. We recommend considering
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* stronger message digests instead.
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*
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* \deprecated Superseded by mbedtls_sha1_ret() in 2.7.0
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*
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* \param input The buffer holding the input data.
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* \param ilen The length of the input data.
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* \param output The SHA-1 checksum result.
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*
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*/
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MBEDTLS_DEPRECATED void mbedtls_sha1(const unsigned char *input,
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size_t ilen,
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unsigned char output[20]);
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#undef MBEDTLS_DEPRECATED
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#endif /* !MBEDTLS_DEPRECATED_REMOVED */
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/**
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* \brief The SHA-1 checkup routine.
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*
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* \warning SHA-1 is considered a weak message digest and its use
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* constitutes a security risk. We recommend considering
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* stronger message digests instead.
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*
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* \return \c 0 on success.
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* \return \c 1 on failure.
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*
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*/
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int mbedtls_sha1_self_test(int verbose);
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#ifdef __cplusplus
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}
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#endif
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#endif /* mbedtls_sha1.h */
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