312 lines
9.3 KiB
C
312 lines
9.3 KiB
C
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/**
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* \file md4.h
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*
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* \brief MD4 message digest algorithm (hash function)
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*
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* \warning MD4 is considered a weak message digest and its use constitutes a
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* security risk. We recommend considering stronger message digests
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* instead.
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*/
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/*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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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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*/
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#ifndef MBEDTLS_MD4_H
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#define MBEDTLS_MD4_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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/* MBEDTLS_ERR_MD4_HW_ACCEL_FAILED is deprecated and should not be used. */
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#define MBEDTLS_ERR_MD4_HW_ACCEL_FAILED -0x002D /**< MD4 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_MD4_ALT)
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// Regular implementation
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//
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/**
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* \brief MD4 context structure
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*
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* \warning MD4 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_md4_context
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{
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uint32_t total[2]; /*!< number of bytes processed */
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uint32_t state[4]; /*!< intermediate digest state */
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unsigned char buffer[64]; /*!< data block being processed */
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}
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mbedtls_md4_context;
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#else /* MBEDTLS_MD4_ALT */
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#include "md4_alt.h"
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#endif /* MBEDTLS_MD4_ALT */
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/**
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* \brief Initialize MD4 context
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*
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* \param ctx MD4 context to be initialized
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*
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* \warning MD4 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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void mbedtls_md4_init( mbedtls_md4_context *ctx );
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/**
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* \brief Clear MD4 context
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*
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* \param ctx MD4 context to be cleared
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*
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* \warning MD4 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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void mbedtls_md4_free( mbedtls_md4_context *ctx );
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/**
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* \brief Clone (the state of) an MD4 context
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*
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* \param dst The destination context
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* \param src The context to be cloned
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*
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* \warning MD4 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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void mbedtls_md4_clone( mbedtls_md4_context *dst,
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const mbedtls_md4_context *src );
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/**
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* \brief MD4 context setup
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*
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* \param ctx context to be initialized
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*
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* \return 0 if successful
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*
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* \warning MD4 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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int mbedtls_md4_starts_ret( mbedtls_md4_context *ctx );
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/**
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* \brief MD4 process buffer
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*
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* \param ctx MD4 context
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* \param input buffer holding the data
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* \param ilen length of the input data
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*
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* \return 0 if successful
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*
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* \warning MD4 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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int mbedtls_md4_update_ret( mbedtls_md4_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 MD4 final digest
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*
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* \param ctx MD4 context
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* \param output MD4 checksum result
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*
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* \return 0 if successful
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*
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* \warning MD4 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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int mbedtls_md4_finish_ret( mbedtls_md4_context *ctx,
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unsigned char output[16] );
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/**
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* \brief MD4 process data block (internal use only)
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*
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* \param ctx MD4 context
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* \param data buffer holding one block of data
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*
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* \return 0 if successful
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*
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* \warning MD4 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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int mbedtls_internal_md4_process( mbedtls_md4_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 MD4 context setup
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*
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* \deprecated Superseded by mbedtls_md4_starts_ret() in 2.7.0
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*
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* \param ctx context to be initialized
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*
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* \warning MD4 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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MBEDTLS_DEPRECATED void mbedtls_md4_starts( mbedtls_md4_context *ctx );
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/**
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* \brief MD4 process buffer
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*
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* \deprecated Superseded by mbedtls_md4_update_ret() in 2.7.0
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*
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* \param ctx MD4 context
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* \param input buffer holding the data
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* \param ilen length of the input data
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*
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* \warning MD4 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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MBEDTLS_DEPRECATED void mbedtls_md4_update( mbedtls_md4_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 MD4 final digest
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*
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* \deprecated Superseded by mbedtls_md4_finish_ret() in 2.7.0
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*
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* \param ctx MD4 context
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* \param output MD4 checksum result
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*
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* \warning MD4 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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MBEDTLS_DEPRECATED void mbedtls_md4_finish( mbedtls_md4_context *ctx,
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unsigned char output[16] );
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/**
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* \brief MD4 process data block (internal use only)
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*
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* \deprecated Superseded by mbedtls_internal_md4_process() in 2.7.0
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*
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* \param ctx MD4 context
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* \param data buffer holding one block of data
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*
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* \warning MD4 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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MBEDTLS_DEPRECATED void mbedtls_md4_process( mbedtls_md4_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 Output = MD4( input buffer )
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*
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* \param input buffer holding the data
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* \param ilen length of the input data
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* \param output MD4 checksum result
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*
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* \return 0 if successful
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*
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* \warning MD4 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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int mbedtls_md4_ret( const unsigned char *input,
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size_t ilen,
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unsigned char output[16] );
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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 Output = MD4( input buffer )
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*
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* \deprecated Superseded by mbedtls_md4_ret() in 2.7.0
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*
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* \param input buffer holding the data
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* \param ilen length of the input data
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* \param output MD4 checksum result
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*
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* \warning MD4 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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MBEDTLS_DEPRECATED void mbedtls_md4( const unsigned char *input,
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size_t ilen,
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unsigned char output[16] );
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#undef MBEDTLS_DEPRECATED
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#endif /* !MBEDTLS_DEPRECATED_REMOVED */
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#if defined(MBEDTLS_SELF_TEST)
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/**
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* \brief Checkup routine
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*
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* \return 0 if successful, or 1 if the test failed
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*
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* \warning MD4 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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int mbedtls_md4_self_test( int verbose );
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#endif /* MBEDTLS_SELF_TEST */
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#ifdef __cplusplus
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}
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#endif
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#endif /* mbedtls_md4.h */
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