Remove Diffie-Hellman examples
These examples rely on the NET module, which we want to remove. In theory we could remove just the dependency, but we decided to remove the whole example because: - They showcase some bad crypto: custom, undocumented protocol (not obviously broken though, apart from authenticating only one side); hard-coded limit of 512-bit size for the DH modulus (2048 is the recommended minimum these days); direct use of the shared secret as a key (instead of applying a KDF); encryption with ECB, custom parameters and the client not having the ability to verify them. - The programs use the DH API in the same way that TLS does, so they have limited demonstration value. - The programs only show finite-field DH, which is not used all that much these days. What people want to see is mostly ECDH.
This commit is contained in:
Janos Follath
Родитель
a78c958b17
Коммит
bea98b4581
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@ -9,9 +9,7 @@ hash/hello
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hash/md5sum
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hash/sha1sum
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hash/sha2sum
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pkey/dh_client
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pkey/dh_genprime
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pkey/dh_server
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pkey/ecdsa
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pkey/ecdh_curve25519
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pkey/gen_key
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@ -49,8 +49,7 @@ endif
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APPS = aes/aescrypt2$(EXEXT) aes/crypt_and_hash$(EXEXT) \
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hash/hello$(EXEXT) hash/generic_sum$(EXEXT) \
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pkey/dh_client$(EXEXT) \
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pkey/dh_genprime$(EXEXT) pkey/dh_server$(EXEXT) \
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pkey/dh_genprime$(EXEXT) \
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pkey/ecdh_curve25519$(EXEXT) \
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pkey/ecdsa$(EXEXT) pkey/gen_key$(EXEXT) \
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pkey/key_app$(EXEXT) pkey/key_app_writer$(EXEXT) \
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@ -123,18 +122,10 @@ hash/generic_sum$(EXEXT): hash/generic_sum.c $(DEP)
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echo " CC hash/generic_sum.c"
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$(CC) $(LOCAL_CFLAGS) $(CFLAGS) hash/generic_sum.c $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@
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pkey/dh_client$(EXEXT): pkey/dh_client.c $(DEP)
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echo " CC pkey/dh_client.c"
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$(CC) $(LOCAL_CFLAGS) $(CFLAGS) pkey/dh_client.c $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@
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pkey/dh_genprime$(EXEXT): pkey/dh_genprime.c $(DEP)
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echo " CC pkey/dh_genprime.c"
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$(CC) $(LOCAL_CFLAGS) $(CFLAGS) pkey/dh_genprime.c $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@
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pkey/dh_server$(EXEXT): pkey/dh_server.c $(DEP)
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echo " CC pkey/dh_server.c"
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$(CC) $(LOCAL_CFLAGS) $(CFLAGS) pkey/dh_server.c $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@
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pkey/ecdh_curve25519$(EXEXT): pkey/ecdh_curve25519.c $(DEP)
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echo " CC pkey/ecdh_curve25519.c"
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$(CC) $(LOCAL_CFLAGS) $(CFLAGS) pkey/ecdh_curve25519.c $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@
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@ -44,8 +44,6 @@ This subdirectory mostly contains sample programs that illustrate specific featu
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### Diffie-Hellman key exchange examples
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* [`pkey/dh_client.c`](pkey/dh_client.c), [`pkey/dh_server.c`](pkey/dh_server.c): secure channel demonstrators (client, server). This pair of programs illustrates how to set up a secure channel using RSA for authentication and Diffie-Hellman to generate a shared AES session key.
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* [`pkey/ecdh_curve25519.c`](pkey/ecdh_curve25519.c): demonstration of a elliptic curve Diffie-Hellman (ECDH) key agreement.
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### Bignum (`mpi`) usage examples
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@ -1,12 +1,6 @@
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add_executable(dh_client dh_client.c)
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target_link_libraries(dh_client mbedtls)
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add_executable(dh_genprime dh_genprime.c)
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target_link_libraries(dh_genprime mbedtls)
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add_executable(dh_server dh_server.c)
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target_link_libraries(dh_server mbedtls)
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add_executable(ecdh_curve25519 ecdh_curve25519.c)
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target_link_libraries(ecdh_curve25519 mbedtls)
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@ -58,6 +52,6 @@ target_link_libraries(pk_encrypt mbedtls)
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add_executable(pk_decrypt pk_decrypt.c)
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target_link_libraries(pk_decrypt mbedtls)
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install(TARGETS dh_client dh_genprime dh_server key_app mpi_demo rsa_genkey rsa_sign rsa_verify rsa_encrypt rsa_decrypt pk_encrypt pk_decrypt pk_sign pk_verify gen_key
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install(TARGETS dh_genprime key_app mpi_demo rsa_genkey rsa_sign rsa_verify rsa_encrypt rsa_decrypt pk_encrypt pk_decrypt pk_sign pk_verify gen_key
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DESTINATION "bin"
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PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)
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@ -1,325 +0,0 @@
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/*
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* Diffie-Hellman-Merkle key exchange (client side)
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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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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "mbedtls/config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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#if defined(MBEDTLS_PLATFORM_C)
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#include "mbedtls/platform.h"
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#else
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#include <stdio.h>
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#include <stdlib.h>
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#define mbedtls_printf printf
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#define mbedtls_time_t time_t
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#define mbedtls_exit exit
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#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
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#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
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#endif /* MBEDTLS_PLATFORM_C */
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#if defined(MBEDTLS_AES_C) && defined(MBEDTLS_DHM_C) && \
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defined(MBEDTLS_ENTROPY_C) && defined(MBEDTLS_NET_C) && \
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defined(MBEDTLS_RSA_C) && defined(MBEDTLS_SHA256_C) && \
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defined(MBEDTLS_FS_IO) && defined(MBEDTLS_CTR_DRBG_C) && \
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defined(MBEDTLS_SHA1_C)
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#include "mbedtls/net_sockets.h"
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#include "mbedtls/aes.h"
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#include "mbedtls/dhm.h"
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#include "mbedtls/rsa.h"
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#include "mbedtls/sha1.h"
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#include "mbedtls/entropy.h"
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#include "mbedtls/ctr_drbg.h"
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#include <stdio.h>
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#include <string.h>
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#endif
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#define SERVER_NAME "localhost"
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#define SERVER_PORT "11999"
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#if !defined(MBEDTLS_AES_C) || !defined(MBEDTLS_DHM_C) || \
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!defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_NET_C) || \
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!defined(MBEDTLS_RSA_C) || !defined(MBEDTLS_SHA256_C) || \
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!defined(MBEDTLS_FS_IO) || !defined(MBEDTLS_CTR_DRBG_C) || \
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!defined(MBEDTLS_SHA1_C)
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int main( void )
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{
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mbedtls_printf("MBEDTLS_AES_C and/or MBEDTLS_DHM_C and/or MBEDTLS_ENTROPY_C "
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"and/or MBEDTLS_NET_C and/or MBEDTLS_RSA_C and/or "
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"MBEDTLS_SHA256_C and/or MBEDTLS_FS_IO and/or "
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"MBEDTLS_CTR_DRBG_C not defined.\n");
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return( 0 );
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}
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#else
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#if defined(MBEDTLS_CHECK_PARAMS)
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#include "mbedtls/platform_util.h"
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void mbedtls_param_failed( const char *failure_condition,
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const char *file,
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int line )
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{
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mbedtls_printf( "%s:%i: Input param failed - %s\n",
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file, line, failure_condition );
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mbedtls_exit( MBEDTLS_EXIT_FAILURE );
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}
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#endif
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int main( void )
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{
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FILE *f;
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int ret = 1;
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int exit_code = MBEDTLS_EXIT_FAILURE;
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size_t n, buflen;
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mbedtls_net_context server_fd;
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unsigned char *p, *end;
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unsigned char buf[2048];
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unsigned char hash[32];
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const char *pers = "dh_client";
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mbedtls_entropy_context entropy;
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mbedtls_ctr_drbg_context ctr_drbg;
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mbedtls_rsa_context rsa;
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mbedtls_dhm_context dhm;
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mbedtls_aes_context aes;
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mbedtls_net_init( &server_fd );
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mbedtls_rsa_init( &rsa, MBEDTLS_RSA_PKCS_V15, MBEDTLS_MD_SHA256 );
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mbedtls_dhm_init( &dhm );
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mbedtls_aes_init( &aes );
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mbedtls_ctr_drbg_init( &ctr_drbg );
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/*
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* 1. Setup the RNG
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*/
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mbedtls_printf( "\n . Seeding the random number generator" );
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fflush( stdout );
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mbedtls_entropy_init( &entropy );
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if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
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(const unsigned char *) pers,
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strlen( pers ) ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned %d\n", ret );
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goto exit;
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}
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/*
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* 2. Read the server's public RSA key
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*/
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mbedtls_printf( "\n . Reading public key from rsa_pub.txt" );
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fflush( stdout );
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if( ( f = fopen( "rsa_pub.txt", "rb" ) ) == NULL )
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{
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mbedtls_printf( " failed\n ! Could not open rsa_pub.txt\n" \
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" ! Please run rsa_genkey first\n\n" );
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goto exit;
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}
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mbedtls_rsa_init( &rsa, MBEDTLS_RSA_PKCS_V15, 0 );
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if( ( ret = mbedtls_mpi_read_file( &rsa.N, 16, f ) ) != 0 ||
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( ret = mbedtls_mpi_read_file( &rsa.E, 16, f ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_mpi_read_file returned %d\n\n", ret );
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fclose( f );
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goto exit;
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}
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rsa.len = ( mbedtls_mpi_bitlen( &rsa.N ) + 7 ) >> 3;
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fclose( f );
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/*
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* 3. Initiate the connection
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*/
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mbedtls_printf( "\n . Connecting to tcp/%s/%s", SERVER_NAME,
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SERVER_PORT );
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fflush( stdout );
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if( ( ret = mbedtls_net_connect( &server_fd, SERVER_NAME,
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SERVER_PORT, MBEDTLS_NET_PROTO_TCP ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_net_connect returned %d\n\n", ret );
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goto exit;
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}
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/*
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* 4a. First get the buffer length
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*/
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mbedtls_printf( "\n . Receiving the server's DH parameters" );
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fflush( stdout );
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memset( buf, 0, sizeof( buf ) );
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if( ( ret = mbedtls_net_recv( &server_fd, buf, 2 ) ) != 2 )
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{
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mbedtls_printf( " failed\n ! mbedtls_net_recv returned %d\n\n", ret );
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goto exit;
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||||
}
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n = buflen = ( buf[0] << 8 ) | buf[1];
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if( buflen < 1 || buflen > sizeof( buf ) )
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{
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mbedtls_printf( " failed\n ! Got an invalid buffer length\n\n" );
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goto exit;
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||||
}
|
||||
|
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/*
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* 4b. Get the DHM parameters: P, G and Ys = G^Xs mod P
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||||
*/
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memset( buf, 0, sizeof( buf ) );
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if( ( ret = mbedtls_net_recv( &server_fd, buf, n ) ) != (int) n )
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{
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mbedtls_printf( " failed\n ! mbedtls_net_recv returned %d\n\n", ret );
|
||||
goto exit;
|
||||
}
|
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||||
p = buf, end = buf + buflen;
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||||
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||||
if( ( ret = mbedtls_dhm_read_params( &dhm, &p, end ) ) != 0 )
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||||
{
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||||
mbedtls_printf( " failed\n ! mbedtls_dhm_read_params returned %d\n\n", ret );
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||||
goto exit;
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||||
}
|
||||
|
||||
if( dhm.len < 64 || dhm.len > 512 )
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||||
{
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mbedtls_printf( " failed\n ! Invalid DHM modulus size\n\n" );
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||||
goto exit;
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||||
}
|
||||
|
||||
/*
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||||
* 5. Check that the server's RSA signature matches
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||||
* the SHA-256 hash of (P,G,Ys)
|
||||
*/
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||||
mbedtls_printf( "\n . Verifying the server's RSA signature" );
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||||
fflush( stdout );
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||||
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||||
p += 2;
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||||
|
||||
if( ( n = (size_t) ( end - p ) ) != rsa.len )
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||||
{
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||||
mbedtls_printf( " failed\n ! Invalid RSA signature size\n\n" );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if( ( ret = mbedtls_sha1_ret( buf, (int)( p - 2 - buf ), hash ) ) != 0 )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_sha1_ret returned %d\n\n", ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if( ( ret = mbedtls_rsa_pkcs1_verify( &rsa, NULL, NULL, MBEDTLS_RSA_PUBLIC,
|
||||
MBEDTLS_MD_SHA256, 0, hash, p ) ) != 0 )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_rsa_pkcs1_verify returned %d\n\n", ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
/*
|
||||
* 6. Send our public value: Yc = G ^ Xc mod P
|
||||
*/
|
||||
mbedtls_printf( "\n . Sending own public value to server" );
|
||||
fflush( stdout );
|
||||
|
||||
n = dhm.len;
|
||||
if( ( ret = mbedtls_dhm_make_public( &dhm, (int) dhm.len, buf, n,
|
||||
mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_dhm_make_public returned %d\n\n", ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if( ( ret = mbedtls_net_send( &server_fd, buf, n ) ) != (int) n )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_net_send returned %d\n\n", ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
/*
|
||||
* 7. Derive the shared secret: K = Ys ^ Xc mod P
|
||||
*/
|
||||
mbedtls_printf( "\n . Shared secret: " );
|
||||
fflush( stdout );
|
||||
|
||||
if( ( ret = mbedtls_dhm_calc_secret( &dhm, buf, sizeof( buf ), &n,
|
||||
mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_dhm_calc_secret returned %d\n\n", ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
for( n = 0; n < 16; n++ )
|
||||
mbedtls_printf( "%02x", buf[n] );
|
||||
|
||||
/*
|
||||
* 8. Setup the AES-256 decryption key
|
||||
*
|
||||
* This is an overly simplified example; best practice is
|
||||
* to hash the shared secret with a random value to derive
|
||||
* the keying material for the encryption/decryption keys,
|
||||
* IVs and MACs.
|
||||
*/
|
||||
mbedtls_printf( "...\n . Receiving and decrypting the ciphertext" );
|
||||
fflush( stdout );
|
||||
|
||||
mbedtls_aes_setkey_dec( &aes, buf, 256 );
|
||||
|
||||
memset( buf, 0, sizeof( buf ) );
|
||||
|
||||
if( ( ret = mbedtls_net_recv( &server_fd, buf, 16 ) ) != 16 )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_net_recv returned %d\n\n", ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
mbedtls_aes_crypt_ecb( &aes, MBEDTLS_AES_DECRYPT, buf, buf );
|
||||
buf[16] = '\0';
|
||||
mbedtls_printf( "\n . Plaintext is \"%s\"\n\n", (char *) buf );
|
||||
|
||||
exit_code = MBEDTLS_EXIT_SUCCESS;
|
||||
|
||||
exit:
|
||||
|
||||
mbedtls_net_free( &server_fd );
|
||||
|
||||
mbedtls_aes_free( &aes );
|
||||
mbedtls_rsa_free( &rsa );
|
||||
mbedtls_dhm_free( &dhm );
|
||||
mbedtls_ctr_drbg_free( &ctr_drbg );
|
||||
mbedtls_entropy_free( &entropy );
|
||||
|
||||
#if defined(_WIN32)
|
||||
mbedtls_printf( " + Press Enter to exit this program.\n" );
|
||||
fflush( stdout ); getchar();
|
||||
#endif
|
||||
|
||||
return( exit_code );
|
||||
}
|
||||
#endif /* MBEDTLS_AES_C && MBEDTLS_DHM_C && MBEDTLS_ENTROPY_C &&
|
||||
MBEDTLS_NET_C && MBEDTLS_RSA_C && MBEDTLS_SHA256_C &&
|
||||
MBEDTLS_FS_IO && MBEDTLS_CTR_DRBG_C */
|
||||
|
|
@ -1,348 +0,0 @@
|
|||
/*
|
||||
* Diffie-Hellman-Merkle key exchange (server side)
|
||||
*
|
||||
* 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)
|
||||
*/
|
||||
|
||||
#if !defined(MBEDTLS_CONFIG_FILE)
|
||||
#include "mbedtls/config.h"
|
||||
#else
|
||||
#include MBEDTLS_CONFIG_FILE
|
||||
#endif
|
||||
|
||||
#if defined(MBEDTLS_PLATFORM_C)
|
||||
#include "mbedtls/platform.h"
|
||||
#else
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#define mbedtls_printf printf
|
||||
#define mbedtls_time_t time_t
|
||||
#define mbedtls_exit exit
|
||||
#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
|
||||
#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
|
||||
#endif /* MBEDTLS_PLATFORM_C */
|
||||
|
||||
#if defined(MBEDTLS_AES_C) && defined(MBEDTLS_DHM_C) && \
|
||||
defined(MBEDTLS_ENTROPY_C) && defined(MBEDTLS_NET_C) && \
|
||||
defined(MBEDTLS_RSA_C) && defined(MBEDTLS_SHA256_C) && \
|
||||
defined(MBEDTLS_FS_IO) && defined(MBEDTLS_CTR_DRBG_C) && \
|
||||
defined(MBEDTLS_SHA1_C)
|
||||
#include "mbedtls/net_sockets.h"
|
||||
#include "mbedtls/aes.h"
|
||||
#include "mbedtls/dhm.h"
|
||||
#include "mbedtls/rsa.h"
|
||||
#include "mbedtls/sha1.h"
|
||||
#include "mbedtls/entropy.h"
|
||||
#include "mbedtls/ctr_drbg.h"
|
||||
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#endif
|
||||
|
||||
#define SERVER_PORT "11999"
|
||||
#define PLAINTEXT "==Hello there!=="
|
||||
|
||||
#if !defined(MBEDTLS_AES_C) || !defined(MBEDTLS_DHM_C) || \
|
||||
!defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_NET_C) || \
|
||||
!defined(MBEDTLS_RSA_C) || !defined(MBEDTLS_SHA256_C) || \
|
||||
!defined(MBEDTLS_FS_IO) || !defined(MBEDTLS_CTR_DRBG_C) || \
|
||||
!defined(MBEDTLS_SHA1_C)
|
||||
int main( void )
|
||||
{
|
||||
mbedtls_printf("MBEDTLS_AES_C and/or MBEDTLS_DHM_C and/or MBEDTLS_ENTROPY_C "
|
||||
"and/or MBEDTLS_NET_C and/or MBEDTLS_RSA_C and/or "
|
||||
"MBEDTLS_SHA256_C and/or MBEDTLS_FS_IO and/or "
|
||||
"MBEDTLS_CTR_DRBG_C not defined.\n");
|
||||
return( 0 );
|
||||
}
|
||||
#else
|
||||
|
||||
#if defined(MBEDTLS_CHECK_PARAMS)
|
||||
#include "mbedtls/platform_util.h"
|
||||
void mbedtls_param_failed( const char *failure_condition,
|
||||
const char *file,
|
||||
int line )
|
||||
{
|
||||
mbedtls_printf( "%s:%i: Input param failed - %s\n",
|
||||
file, line, failure_condition );
|
||||
mbedtls_exit( MBEDTLS_EXIT_FAILURE );
|
||||
}
|
||||
#endif
|
||||
|
||||
int main( void )
|
||||
{
|
||||
FILE *f;
|
||||
|
||||
int ret = 1;
|
||||
int exit_code = MBEDTLS_EXIT_FAILURE;
|
||||
size_t n, buflen;
|
||||
mbedtls_net_context listen_fd, client_fd;
|
||||
|
||||
unsigned char buf[2048];
|
||||
unsigned char hash[32];
|
||||
unsigned char buf2[2];
|
||||
const char *pers = "dh_server";
|
||||
|
||||
mbedtls_entropy_context entropy;
|
||||
mbedtls_ctr_drbg_context ctr_drbg;
|
||||
mbedtls_rsa_context rsa;
|
||||
mbedtls_dhm_context dhm;
|
||||
mbedtls_aes_context aes;
|
||||
|
||||
mbedtls_mpi N, P, Q, D, E;
|
||||
|
||||
mbedtls_net_init( &listen_fd );
|
||||
mbedtls_net_init( &client_fd );
|
||||
mbedtls_rsa_init( &rsa, MBEDTLS_RSA_PKCS_V15, MBEDTLS_MD_SHA256 );
|
||||
mbedtls_dhm_init( &dhm );
|
||||
mbedtls_aes_init( &aes );
|
||||
mbedtls_ctr_drbg_init( &ctr_drbg );
|
||||
|
||||
mbedtls_mpi_init( &N ); mbedtls_mpi_init( &P ); mbedtls_mpi_init( &Q );
|
||||
mbedtls_mpi_init( &D ); mbedtls_mpi_init( &E );
|
||||
|
||||
/*
|
||||
* 1. Setup the RNG
|
||||
*/
|
||||
mbedtls_printf( "\n . Seeding the random number generator" );
|
||||
fflush( stdout );
|
||||
|
||||
mbedtls_entropy_init( &entropy );
|
||||
if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
|
||||
(const unsigned char *) pers,
|
||||
strlen( pers ) ) ) != 0 )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned %d\n", ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
/*
|
||||
* 2a. Read the server's private RSA key
|
||||
*/
|
||||
mbedtls_printf( "\n . Reading private key from rsa_priv.txt" );
|
||||
fflush( stdout );
|
||||
|
||||
if( ( f = fopen( "rsa_priv.txt", "rb" ) ) == NULL )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! Could not open rsa_priv.txt\n" \
|
||||
" ! Please run rsa_genkey first\n\n" );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
mbedtls_rsa_init( &rsa, MBEDTLS_RSA_PKCS_V15, 0 );
|
||||
|
||||
if( ( ret = mbedtls_mpi_read_file( &N , 16, f ) ) != 0 ||
|
||||
( ret = mbedtls_mpi_read_file( &E , 16, f ) ) != 0 ||
|
||||
( ret = mbedtls_mpi_read_file( &D , 16, f ) ) != 0 ||
|
||||
( ret = mbedtls_mpi_read_file( &P , 16, f ) ) != 0 ||
|
||||
( ret = mbedtls_mpi_read_file( &Q , 16, f ) ) != 0 )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_mpi_read_file returned %d\n\n",
|
||||
ret );
|
||||
fclose( f );
|
||||
goto exit;
|
||||
}
|
||||
fclose( f );
|
||||
|
||||
if( ( ret = mbedtls_rsa_import( &rsa, &N, &P, &Q, &D, &E ) ) != 0 )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_rsa_import returned %d\n\n",
|
||||
ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if( ( ret = mbedtls_rsa_complete( &rsa ) ) != 0 )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_rsa_complete returned %d\n\n",
|
||||
ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
/*
|
||||
* 2b. Get the DHM modulus and generator
|
||||
*/
|
||||
mbedtls_printf( "\n . Reading DH parameters from dh_prime.txt" );
|
||||
fflush( stdout );
|
||||
|
||||
if( ( f = fopen( "dh_prime.txt", "rb" ) ) == NULL )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! Could not open dh_prime.txt\n" \
|
||||
" ! Please run dh_genprime first\n\n" );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if( mbedtls_mpi_read_file( &dhm.P, 16, f ) != 0 ||
|
||||
mbedtls_mpi_read_file( &dhm.G, 16, f ) != 0 )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! Invalid DH parameter file\n\n" );
|
||||
fclose( f );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
fclose( f );
|
||||
|
||||
/*
|
||||
* 3. Wait for a client to connect
|
||||
*/
|
||||
mbedtls_printf( "\n . Waiting for a remote connection" );
|
||||
fflush( stdout );
|
||||
|
||||
if( ( ret = mbedtls_net_bind( &listen_fd, NULL, SERVER_PORT, MBEDTLS_NET_PROTO_TCP ) ) != 0 )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_net_bind returned %d\n\n", ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if( ( ret = mbedtls_net_accept( &listen_fd, &client_fd,
|
||||
NULL, 0, NULL ) ) != 0 )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_net_accept returned %d\n\n", ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
/*
|
||||
* 4. Setup the DH parameters (P,G,Ys)
|
||||
*/
|
||||
mbedtls_printf( "\n . Sending the server's DH parameters" );
|
||||
fflush( stdout );
|
||||
|
||||
memset( buf, 0, sizeof( buf ) );
|
||||
|
||||
if( ( ret = mbedtls_dhm_make_params( &dhm, (int) mbedtls_mpi_size( &dhm.P ), buf, &n,
|
||||
mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_dhm_make_params returned %d\n\n", ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
/*
|
||||
* 5. Sign the parameters and send them
|
||||
*/
|
||||
if( ( ret = mbedtls_sha1_ret( buf, n, hash ) ) != 0 )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_sha1_ret returned %d\n\n", ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
buf[n ] = (unsigned char)( rsa.len >> 8 );
|
||||
buf[n + 1] = (unsigned char)( rsa.len );
|
||||
|
||||
if( ( ret = mbedtls_rsa_pkcs1_sign( &rsa, NULL, NULL, MBEDTLS_RSA_PRIVATE, MBEDTLS_MD_SHA256,
|
||||
0, hash, buf + n + 2 ) ) != 0 )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_rsa_pkcs1_sign returned %d\n\n", ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
buflen = n + 2 + rsa.len;
|
||||
buf2[0] = (unsigned char)( buflen >> 8 );
|
||||
buf2[1] = (unsigned char)( buflen );
|
||||
|
||||
if( ( ret = mbedtls_net_send( &client_fd, buf2, 2 ) ) != 2 ||
|
||||
( ret = mbedtls_net_send( &client_fd, buf, buflen ) ) != (int) buflen )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_net_send returned %d\n\n", ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
/*
|
||||
* 6. Get the client's public value: Yc = G ^ Xc mod P
|
||||
*/
|
||||
mbedtls_printf( "\n . Receiving the client's public value" );
|
||||
fflush( stdout );
|
||||
|
||||
memset( buf, 0, sizeof( buf ) );
|
||||
|
||||
n = dhm.len;
|
||||
if( ( ret = mbedtls_net_recv( &client_fd, buf, n ) ) != (int) n )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_net_recv returned %d\n\n", ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if( ( ret = mbedtls_dhm_read_public( &dhm, buf, dhm.len ) ) != 0 )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_dhm_read_public returned %d\n\n", ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
/*
|
||||
* 7. Derive the shared secret: K = Ys ^ Xc mod P
|
||||
*/
|
||||
mbedtls_printf( "\n . Shared secret: " );
|
||||
fflush( stdout );
|
||||
|
||||
if( ( ret = mbedtls_dhm_calc_secret( &dhm, buf, sizeof( buf ), &n,
|
||||
mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_dhm_calc_secret returned %d\n\n", ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
for( n = 0; n < 16; n++ )
|
||||
mbedtls_printf( "%02x", buf[n] );
|
||||
|
||||
/*
|
||||
* 8. Setup the AES-256 encryption key
|
||||
*
|
||||
* This is an overly simplified example; best practice is
|
||||
* to hash the shared secret with a random value to derive
|
||||
* the keying material for the encryption/decryption keys
|
||||
* and MACs.
|
||||
*/
|
||||
mbedtls_printf( "...\n . Encrypting and sending the ciphertext" );
|
||||
fflush( stdout );
|
||||
|
||||
mbedtls_aes_setkey_enc( &aes, buf, 256 );
|
||||
memcpy( buf, PLAINTEXT, 16 );
|
||||
mbedtls_aes_crypt_ecb( &aes, MBEDTLS_AES_ENCRYPT, buf, buf );
|
||||
|
||||
if( ( ret = mbedtls_net_send( &client_fd, buf, 16 ) ) != 16 )
|
||||
{
|
||||
mbedtls_printf( " failed\n ! mbedtls_net_send returned %d\n\n", ret );
|
||||
goto exit;
|
||||
}
|
||||
|
||||
mbedtls_printf( "\n\n" );
|
||||
|
||||
exit_code = MBEDTLS_EXIT_SUCCESS;
|
||||
|
||||
exit:
|
||||
|
||||
mbedtls_mpi_free( &N ); mbedtls_mpi_free( &P ); mbedtls_mpi_free( &Q );
|
||||
mbedtls_mpi_free( &D ); mbedtls_mpi_free( &E );
|
||||
|
||||
mbedtls_net_free( &client_fd );
|
||||
mbedtls_net_free( &listen_fd );
|
||||
|
||||
mbedtls_aes_free( &aes );
|
||||
mbedtls_rsa_free( &rsa );
|
||||
mbedtls_dhm_free( &dhm );
|
||||
mbedtls_ctr_drbg_free( &ctr_drbg );
|
||||
mbedtls_entropy_free( &entropy );
|
||||
|
||||
#if defined(_WIN32)
|
||||
mbedtls_printf( " + Press Enter to exit this program.\n" );
|
||||
fflush( stdout ); getchar();
|
||||
#endif
|
||||
|
||||
return( exit_code );
|
||||
}
|
||||
#endif /* MBEDTLS_AES_C && MBEDTLS_DHM_C && MBEDTLS_ENTROPY_C &&
|
||||
MBEDTLS_NET_C && MBEDTLS_RSA_C && MBEDTLS_SHA256_C &&
|
||||
MBEDTLS_FS_IO && MBEDTLS_CTR_DRBG_C */
|
||||
|
|
@ -1,174 +0,0 @@
|
|||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
|
||||
<ItemGroup Label="ProjectConfigurations">
|
||||
<ProjectConfiguration Include="Debug|Win32">
|
||||
<Configuration>Debug</Configuration>
|
||||
<Platform>Win32</Platform>
|
||||
</ProjectConfiguration>
|
||||
<ProjectConfiguration Include="Debug|x64">
|
||||
<Configuration>Debug</Configuration>
|
||||
<Platform>x64</Platform>
|
||||
</ProjectConfiguration>
|
||||
<ProjectConfiguration Include="Release|Win32">
|
||||
<Configuration>Release</Configuration>
|
||||
<Platform>Win32</Platform>
|
||||
</ProjectConfiguration>
|
||||
<ProjectConfiguration Include="Release|x64">
|
||||
<Configuration>Release</Configuration>
|
||||
<Platform>x64</Platform>
|
||||
</ProjectConfiguration>
|
||||
</ItemGroup>
|
||||
<ItemGroup>
|
||||
<ClCompile Include="..\..\programs\pkey\dh_client.c" />
|
||||
</ItemGroup>
|
||||
<ItemGroup>
|
||||
<ProjectReference Include="mbedTLS.vcxproj">
|
||||
<Project>{46cf2d25-6a36-4189-b59c-e4815388e554}</Project>
|
||||
<LinkLibraryDependencies>true</LinkLibraryDependencies>
|
||||
</ProjectReference>
|
||||
</ItemGroup>
|
||||
<PropertyGroup Label="Globals">
|
||||
<ProjectGuid>{4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}</ProjectGuid>
|
||||
<Keyword>Win32Proj</Keyword>
|
||||
<RootNamespace>dh_client</RootNamespace>
|
||||
</PropertyGroup>
|
||||
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
|
||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
|
||||
<ConfigurationType>Application</ConfigurationType>
|
||||
<UseDebugLibraries>true</UseDebugLibraries>
|
||||
<CharacterSet>Unicode</CharacterSet>
|
||||
</PropertyGroup>
|
||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
|
||||
<ConfigurationType>Application</ConfigurationType>
|
||||
<UseDebugLibraries>true</UseDebugLibraries>
|
||||
<CharacterSet>Unicode</CharacterSet>
|
||||
</PropertyGroup>
|
||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
|
||||
<ConfigurationType>Application</ConfigurationType>
|
||||
<UseDebugLibraries>false</UseDebugLibraries>
|
||||
<WholeProgramOptimization>true</WholeProgramOptimization>
|
||||
<CharacterSet>Unicode</CharacterSet>
|
||||
</PropertyGroup>
|
||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
|
||||
<ConfigurationType>Application</ConfigurationType>
|
||||
<UseDebugLibraries>false</UseDebugLibraries>
|
||||
<WholeProgramOptimization>true</WholeProgramOptimization>
|
||||
<CharacterSet>Unicode</CharacterSet>
|
||||
<PlatformToolset>Windows7.1SDK</PlatformToolset>
|
||||
</PropertyGroup>
|
||||
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
|
||||
<ImportGroup Label="ExtensionSettings">
|
||||
</ImportGroup>
|
||||
<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
|
||||
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
|
||||
</ImportGroup>
|
||||
<ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
|
||||
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
|
||||
</ImportGroup>
|
||||
<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
|
||||
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
|
||||
</ImportGroup>
|
||||
<ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
|
||||
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
|
||||
</ImportGroup>
|
||||
<PropertyGroup Label="UserMacros" />
|
||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
|
||||
<LinkIncremental>true</LinkIncremental>
|
||||
<IntDir>$(Configuration)\$(TargetName)\</IntDir>
|
||||
</PropertyGroup>
|
||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
|
||||
<LinkIncremental>true</LinkIncremental>
|
||||
<IntDir>$(Configuration)\$(TargetName)\</IntDir>
|
||||
</PropertyGroup>
|
||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
|
||||
<LinkIncremental>false</LinkIncremental>
|
||||
<IntDir>$(Configuration)\$(TargetName)\</IntDir>
|
||||
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<ConfigurationType>Application</ConfigurationType>
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<UseDebugLibraries>false</UseDebugLibraries>
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<IntrinsicFunctions>true</IntrinsicFunctions>
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<ImportGroup Label="ExtensionTargets">
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|
|
@ -23,21 +23,11 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "generic_sum", "generic_sum.
|
|||
{46CF2D25-6A36-4189-B59C-E4815388E554} = {46CF2D25-6A36-4189-B59C-E4815388E554}
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EndProjectSection
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EndProject
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Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "dh_client", "dh_client.vcxproj", "{4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}"
|
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ProjectSection(ProjectDependencies) = postProject
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{46CF2D25-6A36-4189-B59C-E4815388E554} = {46CF2D25-6A36-4189-B59C-E4815388E554}
|
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EndProjectSection
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EndProject
|
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Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "dh_genprime", "dh_genprime.vcxproj", "{718960D9-5DA6-7B56-39AD-637E81076C71}"
|
||||
ProjectSection(ProjectDependencies) = postProject
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{46CF2D25-6A36-4189-B59C-E4815388E554} = {46CF2D25-6A36-4189-B59C-E4815388E554}
|
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EndProjectSection
|
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EndProject
|
||||
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "dh_server", "dh_server.vcxproj", "{8D91B804-E2CE-142D-8E06-FBB037ED1F65}"
|
||||
ProjectSection(ProjectDependencies) = postProject
|
||||
{46CF2D25-6A36-4189-B59C-E4815388E554} = {46CF2D25-6A36-4189-B59C-E4815388E554}
|
||||
EndProjectSection
|
||||
EndProject
|
||||
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ecdh_curve25519", "ecdh_curve25519.vcxproj", "{82EE497E-12CC-7C5B-A072-665678ACB43E}"
|
||||
ProjectSection(ProjectDependencies) = postProject
|
||||
{46CF2D25-6A36-4189-B59C-E4815388E554} = {46CF2D25-6A36-4189-B59C-E4815388E554}
|
||||
|
|
@ -311,14 +301,6 @@ Global
|
|||
{D071CCF7-ACA0-21F8-D382-52A759AEA261}.Release|Win32.Build.0 = Release|Win32
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{D071CCF7-ACA0-21F8-D382-52A759AEA261}.Release|x64.ActiveCfg = Release|x64
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||||
{D071CCF7-ACA0-21F8-D382-52A759AEA261}.Release|x64.Build.0 = Release|x64
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{4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}.Debug|Win32.ActiveCfg = Debug|Win32
|
||||
{4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}.Debug|Win32.Build.0 = Debug|Win32
|
||||
{4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}.Debug|x64.ActiveCfg = Debug|x64
|
||||
{4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}.Debug|x64.Build.0 = Debug|x64
|
||||
{4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}.Release|Win32.ActiveCfg = Release|Win32
|
||||
{4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}.Release|Win32.Build.0 = Release|Win32
|
||||
{4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}.Release|x64.ActiveCfg = Release|x64
|
||||
{4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}.Release|x64.Build.0 = Release|x64
|
||||
{718960D9-5DA6-7B56-39AD-637E81076C71}.Debug|Win32.ActiveCfg = Debug|Win32
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||||
{718960D9-5DA6-7B56-39AD-637E81076C71}.Debug|Win32.Build.0 = Debug|Win32
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{718960D9-5DA6-7B56-39AD-637E81076C71}.Debug|x64.ActiveCfg = Debug|x64
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||||
|
|
@ -327,14 +309,6 @@ Global
|
|||
{718960D9-5DA6-7B56-39AD-637E81076C71}.Release|Win32.Build.0 = Release|Win32
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{718960D9-5DA6-7B56-39AD-637E81076C71}.Release|x64.ActiveCfg = Release|x64
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{718960D9-5DA6-7B56-39AD-637E81076C71}.Release|x64.Build.0 = Release|x64
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{8D91B804-E2CE-142D-8E06-FBB037ED1F65}.Debug|Win32.ActiveCfg = Debug|Win32
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{8D91B804-E2CE-142D-8E06-FBB037ED1F65}.Debug|Win32.Build.0 = Debug|Win32
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{8D91B804-E2CE-142D-8E06-FBB037ED1F65}.Debug|x64.ActiveCfg = Debug|x64
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||||
{8D91B804-E2CE-142D-8E06-FBB037ED1F65}.Debug|x64.Build.0 = Debug|x64
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{8D91B804-E2CE-142D-8E06-FBB037ED1F65}.Release|Win32.ActiveCfg = Release|Win32
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{8D91B804-E2CE-142D-8E06-FBB037ED1F65}.Release|Win32.Build.0 = Release|Win32
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{8D91B804-E2CE-142D-8E06-FBB037ED1F65}.Release|x64.ActiveCfg = Release|x64
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{8D91B804-E2CE-142D-8E06-FBB037ED1F65}.Release|x64.Build.0 = Release|x64
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{82EE497E-12CC-7C5B-A072-665678ACB43E}.Debug|Win32.ActiveCfg = Debug|Win32
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||||
{82EE497E-12CC-7C5B-A072-665678ACB43E}.Debug|Win32.Build.0 = Debug|Win32
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||||
{82EE497E-12CC-7C5B-A072-665678ACB43E}.Debug|x64.ActiveCfg = Debug|x64
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||||
|
|
|
|||
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