C++ (Cpp) drbg_aes_reseed Examples

Example #1

File: rnd-fips.c Project: vote539/gnutls

/* Reseed a generator. */
static int drbg_reseed(struct drbg_aes_ctx *ctx)
{
	uint8_t buffer[DRBG_AES_SEED_SIZE];
	int ret;

	/* The other two generators are seeded from /dev/random.  */
	ret = _rnd_get_system_entropy(buffer, sizeof(buffer));
	if (ret < 0)
		return gnutls_assert_val(ret);

	drbg_aes_reseed(ctx, sizeof(buffer), buffer, 0, NULL);

	return 0;
}

Example #2

File: drbg-aes.c Project: Distrotech/gnutls

int
drbg_aes_init(struct drbg_aes_ctx *ctx,
	      unsigned entropy_size, const uint8_t * entropy,
	      unsigned pstring_size, const uint8_t * pstring)
{
	uint8_t tmp[DRBG_AES_KEY_SIZE];

	memset(ctx, 0, sizeof(*ctx));
	memset(tmp, 0, sizeof(tmp));

	aes_set_encrypt_key(&ctx->key, DRBG_AES_KEY_SIZE, tmp);

	return drbg_aes_reseed(ctx, entropy_size, entropy,
			       pstring_size, pstring);
}