Add safety to dummy_random in case of NULL context
@@ -60,8 +60,11 @@ int dummy_random( void *p_rng, unsigned char *output, size_t output_len )
size_t i;
#if defined(MBEDTLS_CTR_DRBG_C)
+ //mbedtls_ctr_drbg_random requires a valid mbedtls_ctr_drbg_context in p_rng
+ if( p_rng != NULL ) {
//use mbedtls_ctr_drbg_random to find bugs in it
ret = mbedtls_ctr_drbg_random(p_rng, output, output_len);
+ }
#else
(void) p_rng;
ret = 0;
