| /** |
| * \brief Generate random data 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> |
| #include <stdlib.h> |
| #define mbedtls_fprintf fprintf |
| #define mbedtls_printf printf |
| #define mbedtls_exit exit |
| #define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS |
| #define MBEDTLS_EXIT_FAILURE EXIT_FAILURE |
| #endif /* MBEDTLS_PLATFORM_C */ |
| |
| #if defined(MBEDTLS_HAVEGE_C) && defined(MBEDTLS_FS_IO) |
| #include "mbedtls/havege.h" |
| |
| #include <stdio.h> |
| #include <time.h> |
| #endif |
| |
| #if !defined(MBEDTLS_HAVEGE_C) || !defined(MBEDTLS_FS_IO) |
| int main( void ) |
| { |
| mbedtls_printf("MBEDTLS_HAVEGE_C not defined.\n"); |
| mbedtls_exit( 0 ); |
| } |
| #else |
| |
| |
| int main( int argc, char *argv[] ) |
| { |
| FILE *f; |
| time_t t; |
| int i, k, ret = 1; |
| int exit_code = MBEDTLS_EXIT_FAILURE; |
| mbedtls_havege_state hs; |
| unsigned char buf[1024]; |
| |
| if( argc < 2 ) |
| { |
| mbedtls_fprintf( stderr, "usage: %s <output filename>\n", argv[0] ); |
| mbedtls_exit( exit_code ); |
| } |
| |
| if( ( f = fopen( argv[1], "wb+" ) ) == NULL ) |
| { |
| mbedtls_printf( "failed to open '%s' for writing.\n", argv[1] ); |
| mbedtls_exit( exit_code ); |
| } |
| |
| mbedtls_havege_init( &hs ); |
| |
| t = time( NULL ); |
| |
| for( i = 0, k = 768; i < k; i++ ) |
| { |
| if( ( ret = mbedtls_havege_random( &hs, buf, sizeof( buf ) ) ) != 0 ) |
| { |
| mbedtls_printf( " failed\n ! mbedtls_havege_random returned -0x%04X", |
| -ret ); |
| goto exit; |
| } |
| |
| fwrite( buf, sizeof( buf ), 1, 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 ); |
| } |
| |
| if( t == time( NULL ) ) |
| t--; |
| |
| mbedtls_printf(" \n "); |
| |
| exit_code = MBEDTLS_EXIT_SUCCESS; |
| |
| exit: |
| mbedtls_havege_free( &hs ); |
| fclose( f ); |
| mbedtls_exit( exit_code ); |
| } |
| #endif /* MBEDTLS_HAVEGE_C */ |