mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2025-10-29 08:47:06 +00:00
131 lines
3.6 KiB
C
131 lines
3.6 KiB
C
/**
|
|
* \brief Use and generate random data into a file via the CTR_DBRG based on AES
|
|
*
|
|
* 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>
|
|
#define mbedtls_fprintf fprintf
|
|
#define mbedtls_printf printf
|
|
#endif
|
|
|
|
#if defined(MBEDTLS_CTR_DRBG_C) && defined(MBEDTLS_ENTROPY_C) && \
|
|
defined(MBEDTLS_FS_IO)
|
|
#include "mbedtls/entropy.h"
|
|
#include "mbedtls/ctr_drbg.h"
|
|
|
|
#include <stdio.h>
|
|
#endif
|
|
|
|
#if !defined(MBEDTLS_CTR_DRBG_C) || !defined(MBEDTLS_ENTROPY_C) || \
|
|
!defined(MBEDTLS_FS_IO)
|
|
int main( void )
|
|
{
|
|
mbedtls_printf("MBEDTLS_CTR_DRBG_C and/or MBEDTLS_ENTROPY_C and/or MBEDTLS_FS_IO not defined.\n");
|
|
return( 0 );
|
|
}
|
|
#else
|
|
int main( int argc, char *argv[] )
|
|
{
|
|
FILE *f;
|
|
int i, k, ret;
|
|
mbedtls_ctr_drbg_context ctr_drbg;
|
|
mbedtls_entropy_context entropy;
|
|
unsigned char buf[1024];
|
|
|
|
mbedtls_ctr_drbg_init( &ctr_drbg );
|
|
|
|
if( argc < 2 )
|
|
{
|
|
mbedtls_fprintf( stderr, "usage: %s <output filename>\n", argv[0] );
|
|
return( 1 );
|
|
}
|
|
|
|
if( ( f = fopen( argv[1], "wb+" ) ) == NULL )
|
|
{
|
|
mbedtls_printf( "failed to open '%s' for writing.\n", argv[1] );
|
|
return( 1 );
|
|
}
|
|
|
|
mbedtls_entropy_init( &entropy );
|
|
ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy, (const unsigned char *) "RANDOM_GEN", 10 );
|
|
if( ret != 0 )
|
|
{
|
|
mbedtls_printf( "failed in mbedtls_ctr_drbg_seed: %d\n", ret );
|
|
goto cleanup;
|
|
}
|
|
mbedtls_ctr_drbg_set_prediction_resistance( &ctr_drbg, MBEDTLS_CTR_DRBG_PR_OFF );
|
|
|
|
#if defined(MBEDTLS_FS_IO)
|
|
ret = mbedtls_ctr_drbg_update_seed_file( &ctr_drbg, "seedfile" );
|
|
|
|
if( ret == MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR )
|
|
{
|
|
mbedtls_printf( "Failed to open seedfile. Generating one.\n" );
|
|
ret = mbedtls_ctr_drbg_write_seed_file( &ctr_drbg, "seedfile" );
|
|
if( ret != 0 )
|
|
{
|
|
mbedtls_printf( "failed in mbedtls_ctr_drbg_write_seed_file: %d\n", ret );
|
|
goto cleanup;
|
|
}
|
|
}
|
|
else if( ret != 0 )
|
|
{
|
|
mbedtls_printf( "failed in mbedtls_ctr_drbg_update_seed_file: %d\n", ret );
|
|
goto cleanup;
|
|
}
|
|
#endif
|
|
|
|
for( i = 0, k = 768; i < k; i++ )
|
|
{
|
|
ret = mbedtls_ctr_drbg_random( &ctr_drbg, buf, sizeof( buf ) );
|
|
if( ret != 0 )
|
|
{
|
|
mbedtls_printf("failed!\n");
|
|
goto cleanup;
|
|
}
|
|
|
|
fwrite( buf, 1, sizeof( buf ), f );
|
|
|
|
mbedtls_printf( "Generating %ldkb of data in file '%s'... %04.1f" \
|
|
"%% done\r", (long)(sizeof(buf) * k / 1024), argv[1], (100 * (float) (i + 1)) / k );
|
|
fflush( stdout );
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
cleanup:
|
|
mbedtls_printf("\n");
|
|
|
|
fclose( f );
|
|
mbedtls_ctr_drbg_free( &ctr_drbg );
|
|
mbedtls_entropy_free( &entropy );
|
|
|
|
return( ret );
|
|
}
|
|
#endif /* MBEDTLS_CTR_DRBG_C && MBEDTLS_ENTROPY_C */
|