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// Copyright 2010 The Go Authors. All rights reserved.

// Use of this source code is governed by a BSD-style

// license that can be found in the LICENSE file.

package cipher

import (

        "bytes"

        "crypto/aes"

        "crypto/rand"

        "testing"

)

func TestCFB(t *testing.T) {

        block, err := aes.NewCipher(commonKey128)

        if err != nil {

                t.Error(err)

                return

        }

        plaintext := []byte("this is the plaintext")

        iv := make([]byte, block.BlockSize())

        rand.Reader.Read(iv)

        cfb := NewCFBEncrypter(block, iv)

        ciphertext := make([]byte, len(plaintext))

        cfb.XORKeyStream(ciphertext, plaintext)

        cfbdec := NewCFBDecrypter(block, iv)

        plaintextCopy := make([]byte, len(plaintext))

        cfbdec.XORKeyStream(plaintextCopy, ciphertext)

        if !bytes.Equal(plaintextCopy, plaintext) {

                t.Errorf("got: %x, want: %x", plaintextCopy, plaintext)

        }

}