/** * \file md5.h * * \brief MD5 message digest algorithm (hash function) * * \warning MD5 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: 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_MD5_H #define MBEDTLS_MD5_H #if !defined(MBEDTLS_CONFIG_FILE) #include "config.h" #else #include MBEDTLS_CONFIG_FILE #endif #include #include #define MBEDTLS_ERR_MD5_HW_ACCEL_FAILED -0x002F /**< MD5 hardware accelerator failed */ #ifdef __cplusplus extern "C" { #endif #if !defined(MBEDTLS_MD5_ALT) // Regular implementation // /** * \brief MD5 context structure * * \warning MD5 is considered a weak message digest and its use * constitutes a security risk. We recommend considering * stronger message digests instead. * */ typedef struct mbedtls_md5_context { uint32_t total[2]; /*!< number of bytes processed */ uint32_t state[4]; /*!< intermediate digest state */ unsigned char buffer[64]; /*!< data block being processed */ } mbedtls_md5_context; #else /* MBEDTLS_MD5_ALT */ #include "md5_alt.h" #endif /* MBEDTLS_MD5_ALT */ /** * \brief Initialize MD5 context * * \param ctx MD5 context to be initialized * * \warning MD5 is considered a weak message digest and its use * constitutes a security risk. We recommend considering * stronger message digests instead. * */ void mbedtls_md5_init(mbedtls_md5_context *ctx); /** * \brief Clear MD5 context * * \param ctx MD5 context to be cleared * * \warning MD5 is considered a weak message digest and its use * constitutes a security risk. We recommend considering * stronger message digests instead. * */ void mbedtls_md5_free(mbedtls_md5_context *ctx); /** * \brief Clone (the state of) an MD5 context * * \param dst The destination context * \param src The context to be cloned * * \warning MD5 is considered a weak message digest and its use * constitutes a security risk. We recommend considering * stronger message digests instead. * */ void mbedtls_md5_clone(mbedtls_md5_context *dst, const mbedtls_md5_context *src); /** * \brief MD5 context setup * * \param ctx context to be initialized * * \return 0 if successful * * \warning MD5 is considered a weak message digest and its use * constitutes a security risk. We recommend considering * stronger message digests instead. * */ int mbedtls_md5_starts_ret(mbedtls_md5_context *ctx); /** * \brief MD5 process buffer * * \param ctx MD5 context * \param input buffer holding the data * \param ilen length of the input data * * \return 0 if successful * * \warning MD5 is considered a weak message digest and its use * constitutes a security risk. We recommend considering * stronger message digests instead. * */ int mbedtls_md5_update_ret(mbedtls_md5_context *ctx, const unsigned char *input, size_t ilen); /** * \brief MD5 final digest * * \param ctx MD5 context * \param output MD5 checksum result * * \return 0 if successful * * \warning MD5 is considered a weak message digest and its use * constitutes a security risk. We recommend considering * stronger message digests instead. * */ int mbedtls_md5_finish_ret(mbedtls_md5_context *ctx, unsigned char output[16]); /** * \brief MD5 process data block (internal use only) * * \param ctx MD5 context * \param data buffer holding one block of data * * \return 0 if successful * * \warning MD5 is considered a weak message digest and its use * constitutes a security risk. We recommend considering * stronger message digests instead. * */ int mbedtls_internal_md5_process(mbedtls_md5_context *ctx, const unsigned char data[64]); #if !defined(MBEDTLS_DEPRECATED_REMOVED) #if defined(MBEDTLS_DEPRECATED_WARNING) #define MBEDTLS_DEPRECATED __attribute__((deprecated)) #else #define MBEDTLS_DEPRECATED #endif /** * \brief MD5 context setup * * \deprecated Superseded by mbedtls_md5_starts_ret() in 2.7.0 * * \param ctx context to be initialized * * \warning MD5 is considered a weak message digest and its use * constitutes a security risk. We recommend considering * stronger message digests instead. * */ MBEDTLS_DEPRECATED void mbedtls_md5_starts(mbedtls_md5_context *ctx); /** * \brief MD5 process buffer * * \deprecated Superseded by mbedtls_md5_update_ret() in 2.7.0 * * \param ctx MD5 context * \param input buffer holding the data * \param ilen length of the input data * * \warning MD5 is considered a weak message digest and its use * constitutes a security risk. We recommend considering * stronger message digests instead. * */ MBEDTLS_DEPRECATED void mbedtls_md5_update(mbedtls_md5_context *ctx, const unsigned char *input, size_t ilen); /** * \brief MD5 final digest * * \deprecated Superseded by mbedtls_md5_finish_ret() in 2.7.0 * * \param ctx MD5 context * \param output MD5 checksum result * * \warning MD5 is considered a weak message digest and its use * constitutes a security risk. We recommend considering * stronger message digests instead. * */ MBEDTLS_DEPRECATED void mbedtls_md5_finish(mbedtls_md5_context *ctx, unsigned char output[16]); /** * \brief MD5 process data block (internal use only) * * \deprecated Superseded by mbedtls_internal_md5_process() in 2.7.0 * * \param ctx MD5 context * \param data buffer holding one block of data * * \warning MD5 is considered a weak message digest and its use * constitutes a security risk. We recommend considering * stronger message digests instead. * */ MBEDTLS_DEPRECATED void mbedtls_md5_process(mbedtls_md5_context *ctx, const unsigned char data[64]); #undef MBEDTLS_DEPRECATED #endif /* !MBEDTLS_DEPRECATED_REMOVED */ /** * \brief Output = MD5( input buffer ) * * \param input buffer holding the data * \param ilen length of the input data * \param output MD5 checksum result * * \return 0 if successful * * \warning MD5 is considered a weak message digest and its use * constitutes a security risk. We recommend considering * stronger message digests instead. * */ int mbedtls_md5_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 = MD5( input buffer ) * * \deprecated Superseded by mbedtls_md5_ret() in 2.7.0 * * \param input buffer holding the data * \param ilen length of the input data * \param output MD5 checksum result * * \warning MD5 is considered a weak message digest and its use * constitutes a security risk. We recommend considering * stronger message digests instead. * */ MBEDTLS_DEPRECATED void mbedtls_md5(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 MD5 is considered a weak message digest and its use * constitutes a security risk. We recommend considering * stronger message digests instead. * */ int mbedtls_md5_self_test(int verbose); #ifdef __cplusplus } #endif #endif /* mbedtls_md5.h */