diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/external/mbedtls/programs/random/gen_entropy.c')
-rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/external/mbedtls/programs/random/gen_entropy.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/external/mbedtls/programs/random/gen_entropy.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/external/mbedtls/programs/random/gen_entropy.c new file mode 100644 index 0000000..792d381 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/external/mbedtls/programs/random/gen_entropy.c @@ -0,0 +1,96 @@ +/** + * \brief Use and generate multiple entropies calls into a file + * + * 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_ENTROPY_C) && defined(MBEDTLS_FS_IO) +#include "mbedtls/entropy.h" + +#include <stdio.h> +#endif + +#if !defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_FS_IO) +int main( void ) +{ + mbedtls_printf("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_entropy_context entropy; + unsigned char buf[MBEDTLS_ENTROPY_BLOCK_SIZE]; + + 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 ); + + for( i = 0, k = 768; i < k; i++ ) + { + ret = mbedtls_entropy_func( &entropy, 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_entropy_free( &entropy ); + + return( ret ); +} +#endif /* MBEDTLS_ENTROPY_C */ |