mirror of
https://github.com/espressif/mbedtls.git
synced 2025-05-09 19:31:18 +08:00
86 lines
1.9 KiB
C
86 lines
1.9 KiB
C
/**
|
|
* \brief Generate random data into a file
|
|
*
|
|
* Copyright The Mbed TLS Contributors
|
|
* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
|
|
*/
|
|
|
|
#if !defined(MBEDTLS_CONFIG_FILE)
|
|
#include "mbedtls/config.h"
|
|
#else
|
|
#include MBEDTLS_CONFIG_FILE
|
|
#endif
|
|
|
|
#include "mbedtls/platform.h"
|
|
|
|
#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",
|
|
(unsigned int) -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 */
|