/** * \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: 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_MD2_H #define MBEDTLS_MD2_H #if !defined(MBEDTLS_CONFIG_FILE) #include "config.h" #else #include MBEDTLS_CONFIG_FILE #endif #include /* 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 */ #if defined(MBEDTLS_SELF_TEST) /** * \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 ); #endif /* MBEDTLS_SELF_TEST */ #ifdef __cplusplus } #endif #endif /* mbedtls_md2.h */