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Use psa_generate_random() instead of mbedtls_ctr_dbrg

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Signed-off-by: Aditya Deshpande <aditya.deshpande@arm.com>
This commit is contained in:
Aditya Deshpande
2023-02-21 18:07:13 +00:00
parent 8d99f2590c
commit be55bb2d5d
1 changed files with 4 additions and 23 deletions
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27
3rdparty/p256-m/p256-m/p256-m.c vendored
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@ -6,8 +6,7 @@
*/ */
#include "p256-m.h" #include "p256-m.h"
#include "mbedtls/entropy.h" #include "psa/crypto.h"
#include "mbedtls/ctr_drbg.h"
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
@ -1158,31 +1157,13 @@ static int scalar_from_bytes(uint32_t s[8], const uint8_t p[32])
*/ */
int p256_generate_random(uint8_t *output, unsigned output_size) int p256_generate_random(uint8_t *output, unsigned output_size)
{ {
#if defined(MBEDTLS_CTR_DRBG_C)
mbedtls_entropy_context entropy;
mbedtls_ctr_drbg_context ctr_drbg;
char *personalization = "p256m";
mbedtls_entropy_init(&entropy);
mbedtls_ctr_drbg_init(&ctr_drbg);
int ret; int ret;
ret = psa_generate_random(output, output_size);
ret = mbedtls_ctr_drbg_seed(&ctr_drbg , mbedtls_entropy_func, &entropy, if (ret != 0){
(const unsigned char *) personalization, return P256_RANDOM_FAILED;
strlen(personalization));
if (ret != 0) {
goto exit;
} }
ret = mbedtls_ctr_drbg_random(&ctr_drbg, output, output_size);
if (ret != 0) {
goto exit;
}
return P256_SUCCESS; return P256_SUCCESS;
#endif
exit:
return P256_RANDOM_FAILED;
} }
/* /*