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path: root/src/pkg/crypto/cipher/ocfb_test.go
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Diffstat (limited to 'src/pkg/crypto/cipher/ocfb_test.go')
-rw-r--r--src/pkg/crypto/cipher/ocfb_test.go44
1 files changed, 44 insertions, 0 deletions
diff --git a/src/pkg/crypto/cipher/ocfb_test.go b/src/pkg/crypto/cipher/ocfb_test.go
new file mode 100644
index 000000000..40938b589
--- /dev/null
+++ b/src/pkg/crypto/cipher/ocfb_test.go
@@ -0,0 +1,44 @@
+// 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 testOCFB(t *testing.T, resync OCFBResyncOption) {
+ block, err := aes.NewCipher(commonKey128)
+ if err != nil {
+ t.Error(err)
+ return
+ }
+
+ plaintext := []byte("this is the plaintext, which is long enough to span several blocks.")
+ randData := make([]byte, block.BlockSize())
+ rand.Reader.Read(randData)
+ ocfb, prefix := NewOCFBEncrypter(block, randData, resync)
+ ciphertext := make([]byte, len(plaintext))
+ ocfb.XORKeyStream(ciphertext, plaintext)
+
+ ocfbdec := NewOCFBDecrypter(block, prefix, resync)
+ if ocfbdec == nil {
+ t.Errorf("NewOCFBDecrypter failed (resync: %t)", resync)
+ return
+ }
+ plaintextCopy := make([]byte, len(plaintext))
+ ocfbdec.XORKeyStream(plaintextCopy, ciphertext)
+
+ if !bytes.Equal(plaintextCopy, plaintext) {
+ t.Errorf("got: %x, want: %x (resync: %t)", plaintextCopy, plaintext, resync)
+ }
+}
+
+func TestOCFB(t *testing.T) {
+ testOCFB(t, OCFBNoResync)
+ testOCFB(t, OCFBResync)
+}