package aes

import (
	"crypto/cipher"
	"crypto/subtle"
	"errors"
	"internal/byteorder"
	"runtime"
)

// This file implements GCM using an optimized GHASH function.

//go:noescape
func gcmInit(productTable *[256]byte, h []byte)

//go:noescape
func gcmHash(output []byte, productTable *[256]byte, inp []byte, len int)

//go:noescape
func gcmMul(output []byte, productTable *[256]byte)

const (