Function sha3_Update

dpdk/drivers/crypto/ccp/ccp_crypto.c:307–362

This is simply the 'update' with the padding block. * The padding block is 0x01 || 0x00* || 0x80. First 0x01 and last 0x80 * bytes are always present, but they can be the same byte. */

 * bytes are always present, but they can be the same byte.
 */
static void
sha3_Update(void *priv, void const *bufIn, size_t len)
{
	sha3_context *ctx = (sha3_context *) priv;
	unsigned int old_tail = (8 - ctx->byteIndex) & 7;
	size_t words;
	unsigned int tail;
	size_t i;
	const uint8_t *buf = bufIn;

	if (len < old_tail) {
		while (len--)
			ctx->saved |= (uint64_t) (*(buf++)) <<
				      ((ctx->byteIndex++) * 8);
		return;
	}

	if (old_tail) {
		len -= old_tail;
		while (old_tail--)
			ctx->saved |= (uint64_t) (*(buf++)) <<
				      ((ctx->byteIndex++) * 8);

		ctx->s[ctx->wordIndex] ^= ctx->saved;
		ctx->byteIndex = 0;
		ctx->saved = 0;
		if (++ctx->wordIndex ==
		   (SHA3_KECCAK_SPONGE_WORDS - ctx->capacityWords)) {
			keccakf(ctx->s);
			ctx->wordIndex = 0;
		}
	}

	words = len / sizeof(uint64_t);
	tail = len - words * sizeof(uint64_t);

	for (i = 0; i < words; i++, buf += sizeof(uint64_t)) {
		const uint64_t t = (uint64_t) (buf[0]) |
			((uint64_t) (buf[1]) << 8 * 1) |
			((uint64_t) (buf[2]) << 8 * 2) |
			((uint64_t) (buf[3]) << 8 * 3) |
			((uint64_t) (buf[4]) << 8 * 4) |
			((uint64_t) (buf[5]) << 8 * 5) |
			((uint64_t) (buf[6]) << 8 * 6) |
			((uint64_t) (buf[7]) << 8 * 7);
		ctx->s[ctx->wordIndex] ^= t;
		if (++ctx->wordIndex ==
		   (SHA3_KECCAK_SPONGE_WORDS - ctx->capacityWords)) {
			keccakf(ctx->s);
			ctx->wordIndex = 0;
		}
	}

	while (tail--)
		ctx->saved |= (uint64_t) (*(buf++)) << ((ctx->byteIndex++) * 8);
}

int partial_hash_sha3_224(uint8_t *data_in, uint8_t *data_out)