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// Copyright 2011 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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"golang.org/x/crypto/openpgp/errors"
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// TestReader wraps a []byte and returns reads of a specific length.
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type testReader struct {
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func (t *testReader) Read(buf []byte) (n int, err error) {
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func testMDCReader(t *testing.T) {
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mdcPlaintext, _ := hex.DecodeString(mdcPlaintextHex)
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for stride := 1; stride < len(mdcPlaintext)/2; stride++ {
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r := &testReader{data: mdcPlaintext, stride: stride}
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mdcReader := &seMDCReader{in: r, h: sha1.New()}
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body, err := ioutil.ReadAll(mdcReader)
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t.Errorf("stride: %d, error: %s", stride, err)
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if !bytes.Equal(body, mdcPlaintext[:len(mdcPlaintext)-22]) {
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t.Errorf("stride: %d: bad contents %x", stride, body)
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err = mdcReader.Close()
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t.Errorf("stride: %d, error on Close: %s", stride, err)
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mdcPlaintext[15] ^= 80
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r := &testReader{data: mdcPlaintext, stride: 2}
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mdcReader := &seMDCReader{in: r, h: sha1.New()}
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_, err := ioutil.ReadAll(mdcReader)
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t.Errorf("corruption test, error: %s", err)
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err = mdcReader.Close()
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t.Error("corruption: no error")
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} else if _, ok := err.(*errors.SignatureError); !ok {
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t.Errorf("corruption: expected SignatureError, got: %s", err)
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const mdcPlaintextHex = "a302789c3b2d93c4e0eb9aba22283539b3203335af44a134afb800c849cb4c4de10200aff40b45d31432c80cb384299a0655966d6939dfdeed1dddf980"
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func TestSerialize(t *testing.T) {
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buf := bytes.NewBuffer(nil)
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key := make([]byte, c.KeySize())
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w, err := SerializeSymmetricallyEncrypted(buf, c, key, nil)
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t.Errorf("error from SerializeSymmetricallyEncrypted: %s", err)
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contents := []byte("hello world\n")
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t.Errorf("error from Read: %s", err)
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se, ok := p.(*SymmetricallyEncrypted)
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t.Errorf("didn't read a *SymmetricallyEncrypted")
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r, err := se.Decrypt(c, key)
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t.Errorf("error from Decrypt: %s", err)
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contentsCopy := bytes.NewBuffer(nil)
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_, err = io.Copy(contentsCopy, r)
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t.Errorf("error from io.Copy: %s", err)
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if !bytes.Equal(contentsCopy.Bytes(), contents) {
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t.Errorf("contents not equal got: %x want: %x", contentsCopy.Bytes(), contents)