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/**
* \file md2.h
*
* \brief MD2 message digest algorithm (hash function)
*
* \warning MD2 is considered a weak message digest and its use constitutes a
* security risk. We recommend considering stronger message digests
* instead.
*/
/*
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
* SPDX-License-Identifier: Apache-2.0
*
* 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)
*
*/
#ifndef MBEDTLS_MD2_H
#define MBEDTLS_MD2_H
#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#include <stddef.h>
/* MBEDTLS_ERR_MD2_HW_ACCEL_FAILED is deprecated and should not be used. */
#define MBEDTLS_ERR_MD2_HW_ACCEL_FAILED -0x002B /**< MD2 hardware accelerator failed */
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_MD2_ALT)
// Regular implementation
//
/**
* \brief MD2 context structure
*
* \warning MD2 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
*/
typedef struct mbedtls_md2_context
{
unsigned char cksum[16]; /*!< checksum of the data block */
unsigned char state[48]; /*!< intermediate digest state */
unsigned char buffer[16]; /*!< data block being processed */
size_t left; /*!< amount of data in buffer */
}
mbedtls_md2_context;
#else /* MBEDTLS_MD2_ALT */
#include "md2_alt.h"
#endif /* MBEDTLS_MD2_ALT */
/**
* \brief Initialize MD2 context
*
* \param ctx MD2 context to be initialized
*
* \warning MD2 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
*/
void mbedtls_md2_init( mbedtls_md2_context *ctx );
/**
* \brief Clear MD2 context
*
* \param ctx MD2 context to be cleared
*
* \warning MD2 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
*/
void mbedtls_md2_free( mbedtls_md2_context *ctx );
/**
* \brief Clone (the state of) an MD2 context
*
* \param dst The destination context
* \param src The context to be cloned
*
* \warning MD2 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
*/
void mbedtls_md2_clone( mbedtls_md2_context *dst,
const mbedtls_md2_context *src );
/**
* \brief MD2 context setup
*
* \param ctx context to be initialized
*
* \return 0 if successful
*
* \warning MD2 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
*/
int mbedtls_md2_starts_ret( mbedtls_md2_context *ctx );
/**
* \brief MD2 process buffer
*
* \param ctx MD2 context
* \param input buffer holding the data
* \param ilen length of the input data
*
* \return 0 if successful
*
* \warning MD2 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
*/
int mbedtls_md2_update_ret( mbedtls_md2_context *ctx,
const unsigned char *input,
size_t ilen );
/**
* \brief MD2 final digest
*
* \param ctx MD2 context
* \param output MD2 checksum result
*
* \return 0 if successful
*
* \warning MD2 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
*/
int mbedtls_md2_finish_ret( mbedtls_md2_context *ctx,
unsigned char output[16] );
/**
* \brief MD2 process data block (internal use only)
*
* \param ctx MD2 context
*
* \return 0 if successful
*
* \warning MD2 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
*/
int mbedtls_internal_md2_process( mbedtls_md2_context *ctx );
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
#if defined(MBEDTLS_DEPRECATED_WARNING)
#define MBEDTLS_DEPRECATED __attribute__((deprecated))
#else
#define MBEDTLS_DEPRECATED
#endif
/**
* \brief MD2 context setup
*
* \deprecated Superseded by mbedtls_md2_starts_ret() in 2.7.0
*
* \param ctx context to be initialized
*
* \warning MD2 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
*/
MBEDTLS_DEPRECATED void mbedtls_md2_starts( mbedtls_md2_context *ctx );
/**
* \brief MD2 process buffer
*
* \deprecated Superseded by mbedtls_md2_update_ret() in 2.7.0
*
* \param ctx MD2 context
* \param input buffer holding the data
* \param ilen length of the input data
*
* \warning MD2 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
*/
MBEDTLS_DEPRECATED void mbedtls_md2_update( mbedtls_md2_context *ctx,
const unsigned char *input,
size_t ilen );
/**
* \brief MD2 final digest
*
* \deprecated Superseded by mbedtls_md2_finish_ret() in 2.7.0
*
* \param ctx MD2 context
* \param output MD2 checksum result
*
* \warning MD2 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
*/
MBEDTLS_DEPRECATED void mbedtls_md2_finish( mbedtls_md2_context *ctx,
unsigned char output[16] );
/**
* \brief MD2 process data block (internal use only)
*
* \deprecated Superseded by mbedtls_internal_md2_process() in 2.7.0
*
* \param ctx MD2 context
*
* \warning MD2 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
*/
MBEDTLS_DEPRECATED void mbedtls_md2_process( mbedtls_md2_context *ctx );
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
/**
* \brief Output = MD2( input buffer )
*
* \param input buffer holding the data
* \param ilen length of the input data
* \param output MD2 checksum result
*
* \warning MD2 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
*/
int mbedtls_md2_ret( const unsigned char *input,
size_t ilen,
unsigned char output[16] );
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
#if defined(MBEDTLS_DEPRECATED_WARNING)
#define MBEDTLS_DEPRECATED __attribute__((deprecated))
#else
#define MBEDTLS_DEPRECATED
#endif
/**
* \brief Output = MD2( input buffer )
*
* \deprecated Superseded by mbedtls_md2_ret() in 2.7.0
*
* \param input buffer holding the data
* \param ilen length of the input data
* \param output MD2 checksum result
*
* \warning MD2 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
*/
MBEDTLS_DEPRECATED void mbedtls_md2( const unsigned char *input,
size_t ilen,
unsigned char output[16] );
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
/**
* \brief Checkup routine
*
* \return 0 if successful, or 1 if the test failed
*
* \warning MD2 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
*/
int mbedtls_md2_self_test( int verbose );
#ifdef __cplusplus
}
#endif
#endif /* mbedtls_md2.h */