Downgraded mbedtls and updated for latest dynarmic
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darktux
171
externals/mbedtls/include/mbedtls/arc4.h
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171
externals/mbedtls/include/mbedtls/arc4.h
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/**
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* \file arc4.h
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*
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* \brief The ARCFOUR stream cipher
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*
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* \warning ARC4 is considered a weak cipher and its use constitutes a
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* security risk. We recommend considering stronger ciphers instead.
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*/
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/*
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* Copyright The Mbed TLS Contributors
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* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
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*
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* This file is provided under the Apache License 2.0, or the
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* GNU General Public License v2.0 or later.
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*
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* **********
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* Apache License 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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* **********
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*
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* **********
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* GNU General Public License v2.0 or later:
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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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* **********
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*
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*/
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#ifndef MBEDTLS_ARC4_H
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#define MBEDTLS_ARC4_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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/* MBEDTLS_ERR_ARC4_HW_ACCEL_FAILED is deprecated and should not be used. */
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#define MBEDTLS_ERR_ARC4_HW_ACCEL_FAILED -0x0019 /**< ARC4 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_ARC4_ALT)
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// Regular implementation
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//
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/**
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* \brief ARC4 context structure
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*
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* \warning ARC4 is considered a weak cipher and its use constitutes a
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* security risk. We recommend considering stronger ciphers instead.
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*
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*/
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typedef struct mbedtls_arc4_context
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{
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int x; /*!< permutation index */
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int y; /*!< permutation index */
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unsigned char m[256]; /*!< permutation table */
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}
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mbedtls_arc4_context;
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#else /* MBEDTLS_ARC4_ALT */
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#include "arc4_alt.h"
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#endif /* MBEDTLS_ARC4_ALT */
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/**
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* \brief Initialize ARC4 context
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*
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* \param ctx ARC4 context to be initialized
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*
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* \warning ARC4 is considered a weak cipher and its use constitutes a
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* security risk. We recommend considering stronger ciphers
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* instead.
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*
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*/
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void mbedtls_arc4_init( mbedtls_arc4_context *ctx );
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/**
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* \brief Clear ARC4 context
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*
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* \param ctx ARC4 context to be cleared
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*
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* \warning ARC4 is considered a weak cipher and its use constitutes a
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* security risk. We recommend considering stronger ciphers
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* instead.
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*
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*/
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void mbedtls_arc4_free( mbedtls_arc4_context *ctx );
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/**
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* \brief ARC4 key schedule
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*
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* \param ctx ARC4 context to be setup
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* \param key the secret key
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* \param keylen length of the key, in bytes
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*
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* \warning ARC4 is considered a weak cipher and its use constitutes a
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* security risk. We recommend considering stronger ciphers
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* instead.
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*
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*/
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void mbedtls_arc4_setup( mbedtls_arc4_context *ctx, const unsigned char *key,
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unsigned int keylen );
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/**
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* \brief ARC4 cipher function
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*
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* \param ctx ARC4 context
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* \param length length of the input data
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* \param input buffer holding the input data
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* \param output buffer for the output data
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*
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* \return 0 if successful
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*
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* \warning ARC4 is considered a weak cipher and its use constitutes a
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* security risk. We recommend considering stronger ciphers
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* instead.
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*
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*/
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int mbedtls_arc4_crypt( mbedtls_arc4_context *ctx, size_t length, const unsigned char *input,
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unsigned char *output );
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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 ARC4 is considered a weak cipher and its use constitutes a
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* security risk. We recommend considering stronger ciphers
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* instead.
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*
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*/
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int mbedtls_arc4_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 /* arc4.h */
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