// -*- go -*-

package main

import (
	"bytes"
	"crypto/cipher/gcm"
)

func main(a, b byte) (string, int) {
	key := []byte{
		0x06, 0xa9, 0x21, 0x40, 0x36, 0xb8, 0xa1, 0x5b,
		0x51, 0x2e, 0x03, 0xd5, 0x34, 0x12, 0x00, 0x06,
	}
	nonce := []byte{
		0x3d, 0xaf, 0xba, 0x42, 0x9d, 0x9e, 0xb4, 0x30,
		0xb4, 0x22, 0xda, 0x80,
	}
	plain := []byte("Single block msgSingle block msg")
	additional := []byte("additional data to be authenticated")

	c := gcm.EncryptAES128(key, nonce, plain, additional)
	p, ok := gcm.DecryptAES128(key, nonce, c, additional)
	if !ok {
		return "Open failed", 0
	}
	return string(p), bytes.Compare(plain, p)
}