Ejemplo n.º 1
0
func Test4(t *testing.T) {
	ciphertexts := make([][]byte, len(input4))

	for i, input := range input4 {
		// Decode ciphertext
		ciphertext, err := encoding.DecodeHex([]byte(input))
		if err != nil {
			t.Error("Decoding", input, "failed")
		}

		ciphertexts[i] = ciphertext
	}

	// Attempt to find ciphertext most likely xor'd with a key of the same byte
	ciphertext, closestByte := xorbyte.FindCiphertext(ciphertexts, xorbyte.EnglishScorer)

	// Construct key from most likely byte
	key := make([]byte, len(ciphertext))
	for i := 0; i < len(key); i++ {
		key[i] = closestByte
	}

	// Decrypt ciphertext
	plaintext, _ := bits.Xor(ciphertext, key)

	// output plaintext
	if string(plaintext) != output4 {
		t.Error(string(plaintext), "!=", output4)
	}
}
Ejemplo n.º 2
0
func Test1(t *testing.T) {
	raw, err := encoding.DecodeHex([]byte(input1))
	if err != nil {
		t.Error("Decoding", input1, "failed")
	}

	if encoded := encoding.EncodeBase64(raw); string(encoded) != output1 {
		t.Error(string(encoded), "!=", output1)
	}
}
Ejemplo n.º 3
0
func Test2(t *testing.T) {
	raw1, err := encoding.DecodeHex([]byte(input2a))
	if err != nil {
		t.Error("Decoding", input2a, "failed")
	}

	raw2, err := encoding.DecodeHex([]byte(input2b))
	if err != nil {
		t.Error("Decoding", input2b, "failed")
	}

	result, err := bits.Xor(raw1, raw2)
	if err != nil {

	}

	resultEncoded := encoding.EncodeHex(result)
	if string(resultEncoded) != output2 {
		t.Error(string(resultEncoded), "!=", output2)
	}
}
Ejemplo n.º 4
0
func Test3(t *testing.T) {
	// Decode ciphertext
	ciphertext, err := encoding.DecodeHex([]byte(input3))
	if err != nil {
		t.Error("Decoding", input3, "failed")
	}

	// Attempt to find byte most likely xor'd with ciphertext
	closestByte := xorbyte.FindByte(ciphertext, xorbyte.EnglishScorer)

	// Construct key from most likely byte
	key := make([]byte, len(ciphertext))
	for i := 0; i < len(key); i++ {
		key[i] = closestByte
	}

	// Decrypt ciphertext
	plaintext, _ := bits.Xor(ciphertext, key)

	// output plaintext
	if string(plaintext) != output3 {
		t.Error("Incorrect key chosen:", string(closestByte), string(plaintext))
	}
}