Feature/mbedtls (#84)
* try to import mbedtls and build it * add stubs socket class * some boilterplate, read and write function implemented * more boilterplate / current error in handshake because no CA cert is setup * add something so skip ca verification, can ws curl https://google.com ! * cleanup / close implemented * tweak CMakefiles * typo in include * update readme * disable unittests
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Benjamin Sergeant
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third_party/mbedtls/programs/pkey/dh_genprime.c
vendored
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214
third_party/mbedtls/programs/pkey/dh_genprime.c
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@ -0,0 +1,214 @@
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/*
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* Diffie-Hellman-Merkle key exchange (prime generation)
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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_BIGNUM_C) || !defined(MBEDTLS_ENTROPY_C) || \
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!defined(MBEDTLS_FS_IO) || !defined(MBEDTLS_CTR_DRBG_C) || \
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!defined(MBEDTLS_GENPRIME)
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int main( void )
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{
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mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_ENTROPY_C and/or "
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"MBEDTLS_FS_IO and/or MBEDTLS_CTR_DRBG_C and/or "
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"MBEDTLS_GENPRIME not defined.\n");
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return( 0 );
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}
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#else
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#include "mbedtls/bignum.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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#define USAGE \
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"\n usage: dh_genprime param=<>...\n" \
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"\n acceprable parameters:\n" \
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" bits=%%d default: 2048\n"
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#define DFL_BITS 2048
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/*
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* Note: G = 4 is always a quadratic residue mod P,
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* so it is a generator of order Q (with P = 2*Q+1).
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*/
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#define GENERATOR "4"
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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( int argc, char **argv )
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{
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int ret = 1;
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int exit_code = MBEDTLS_EXIT_FAILURE;
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mbedtls_mpi G, P, Q;
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mbedtls_entropy_context entropy;
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mbedtls_ctr_drbg_context ctr_drbg;
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const char *pers = "dh_genprime";
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FILE *fout;
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int nbits = DFL_BITS;
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int i;
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char *p, *q;
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mbedtls_mpi_init( &G ); mbedtls_mpi_init( &P ); mbedtls_mpi_init( &Q );
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mbedtls_ctr_drbg_init( &ctr_drbg );
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mbedtls_entropy_init( &entropy );
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if( argc == 0 )
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{
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usage:
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mbedtls_printf( USAGE );
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return( exit_code );
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}
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for( i = 1; i < argc; i++ )
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{
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p = argv[i];
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if( ( q = strchr( p, '=' ) ) == NULL )
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goto usage;
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*q++ = '\0';
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if( strcmp( p, "bits" ) == 0 )
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{
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nbits = atoi( q );
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if( nbits < 0 || nbits > MBEDTLS_MPI_MAX_BITS )
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goto usage;
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}
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else
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goto usage;
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}
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if( ( ret = mbedtls_mpi_read_string( &G, 10, GENERATOR ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_mpi_read_string returned %d\n", ret );
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goto exit;
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}
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mbedtls_printf( " ! Generating large primes may take minutes!\n" );
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mbedtls_printf( "\n . Seeding the random number generator..." );
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fflush( stdout );
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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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mbedtls_printf( " ok\n . Generating the modulus, please wait..." );
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fflush( stdout );
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/*
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* This can take a long time...
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*/
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if( ( ret = mbedtls_mpi_gen_prime( &P, nbits, 1,
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mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_mpi_gen_prime returned %d\n\n", ret );
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goto exit;
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}
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mbedtls_printf( " ok\n . Verifying that Q = (P-1)/2 is prime..." );
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fflush( stdout );
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if( ( ret = mbedtls_mpi_sub_int( &Q, &P, 1 ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_mpi_sub_int returned %d\n\n", ret );
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goto exit;
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}
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if( ( ret = mbedtls_mpi_div_int( &Q, NULL, &Q, 2 ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_mpi_div_int returned %d\n\n", ret );
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goto exit;
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}
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if( ( ret = mbedtls_mpi_is_prime_ext( &Q, 50, mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_mpi_is_prime returned %d\n\n", ret );
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goto exit;
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}
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mbedtls_printf( " ok\n . Exporting the value in dh_prime.txt..." );
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fflush( stdout );
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if( ( fout = fopen( "dh_prime.txt", "wb+" ) ) == NULL )
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{
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mbedtls_printf( " failed\n ! Could not create dh_prime.txt\n\n" );
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goto exit;
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}
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if( ( ret = mbedtls_mpi_write_file( "P = ", &P, 16, fout ) != 0 ) ||
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( ret = mbedtls_mpi_write_file( "G = ", &G, 16, fout ) != 0 ) )
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{
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mbedtls_printf( " failed\n ! mbedtls_mpi_write_file returned %d\n\n", ret );
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fclose( fout );
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goto exit;
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}
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mbedtls_printf( " ok\n\n" );
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fclose( fout );
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exit_code = MBEDTLS_EXIT_SUCCESS;
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exit:
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mbedtls_mpi_free( &G ); mbedtls_mpi_free( &P ); mbedtls_mpi_free( &Q );
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mbedtls_ctr_drbg_free( &ctr_drbg );
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mbedtls_entropy_free( &entropy );
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#if defined(_WIN32)
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mbedtls_printf( " Press Enter to exit this program.\n" );
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fflush( stdout ); getchar();
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#endif
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return( exit_code );
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}
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#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C && MBEDTLS_FS_IO &&
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MBEDTLS_CTR_DRBG_C && MBEDTLS_GENPRIME */
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