47 lines
1.2 KiB
Go
47 lines
1.2 KiB
Go
// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package packet
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import (
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"bytes"
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"crypto/aes"
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"crypto/rand"
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"testing"
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)
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var commonKey128 = []byte{0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c}
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func testOCFB(t *testing.T, resync OCFBResyncOption) {
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block, err := aes.NewCipher(commonKey128)
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if err != nil {
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t.Error(err)
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return
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}
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plaintext := []byte("this is the plaintext, which is long enough to span several blocks.")
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randData := make([]byte, block.BlockSize())
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rand.Reader.Read(randData)
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ocfb, prefix := NewOCFBEncrypter(block, randData, resync)
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ciphertext := make([]byte, len(plaintext))
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ocfb.XORKeyStream(ciphertext, plaintext)
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ocfbdec := NewOCFBDecrypter(block, prefix, resync)
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if ocfbdec == nil {
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t.Errorf("NewOCFBDecrypter failed (resync: %t)", resync)
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return
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}
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plaintextCopy := make([]byte, len(plaintext))
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ocfbdec.XORKeyStream(plaintextCopy, ciphertext)
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if !bytes.Equal(plaintextCopy, plaintext) {
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t.Errorf("got: %x, want: %x (resync: %t)", plaintextCopy, plaintext, resync)
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}
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}
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func TestOCFB(t *testing.T) {
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testOCFB(t, OCFBNoResync)
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testOCFB(t, OCFBResync)
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}
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