Exemplo n.º 1
0
func main() {
	inputfile := "resources/7.txt"

	// Read input file
	input, err := ioutil.ReadFile(inputfile)
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}

	key := []byte("YELLOW SUBMARINE")

	// Decode base64
	input = conversion.Base64BytesToBytes(input)

	// Decrypt ECB
	e, err := blocks.NewAES(key)
	if err != nil {
		fmt.Println(err)
	} else {
		plaintext, err := e.DecryptECB(input)
		if err != nil {
			fmt.Println(err)
		} else {
			fmt.Println(string(plaintext))
		}
	}
}
func main() {
	inputfile := "resources/6.txt"

	// Read input file
	input, err := ioutil.ReadFile(inputfile)
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}

	input = conversion.Base64BytesToBytes(input)

	samples := 15
	ka, err := analysis.BestKeysize(input, samples)
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}

	key := make([]byte, ka.Keysize)
	blocks := conversion.TransposeBlocks(input, ka.Keysize)
	for i := 0; i < ka.Keysize; i++ {
		decrypt, _ := xor.BestByteDecryption(blocks[i])
		key[i] = decrypt.Key[0]
	}

	if result, err := xor.Apply(input, key); err != nil {
		fmt.Println(err)
	} else {
		fmt.Println("Key:", string(key))
		fmt.Println("Output:", string(result))
	}
}