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path: root/src/pkg/crypto/cipher/cfb_test.go
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Diffstat (limited to 'src/pkg/crypto/cipher/cfb_test.go')
-rw-r--r--src/pkg/crypto/cipher/cfb_test.go8
1 files changed, 5 insertions, 3 deletions
diff --git a/src/pkg/crypto/cipher/cfb_test.go b/src/pkg/crypto/cipher/cfb_test.go
index f704b337e..ec708ab2b 100644
--- a/src/pkg/crypto/cipher/cfb_test.go
+++ b/src/pkg/crypto/cipher/cfb_test.go
@@ -19,16 +19,18 @@ func TestCFB(t *testing.T) {
return
}
- plaintext := []byte("this is the plaintext")
+ plaintext := []byte("this is the plaintext. this is the plaintext.")
iv := make([]byte, block.BlockSize())
rand.Reader.Read(iv)
cfb := cipher.NewCFBEncrypter(block, iv)
ciphertext := make([]byte, len(plaintext))
- cfb.XORKeyStream(ciphertext, plaintext)
+ copy(ciphertext, plaintext)
+ cfb.XORKeyStream(ciphertext, ciphertext)
cfbdec := cipher.NewCFBDecrypter(block, iv)
plaintextCopy := make([]byte, len(plaintext))
- cfbdec.XORKeyStream(plaintextCopy, ciphertext)
+ copy(plaintextCopy, ciphertext)
+ cfbdec.XORKeyStream(plaintextCopy, plaintextCopy)
if !bytes.Equal(plaintextCopy, plaintext) {
t.Errorf("got: %x, want: %x", plaintextCopy, plaintext)