First commit: Outline of tunnel encryption code

tunnel/crypto_test.go

@@ -0,0 +1,41 @@
+package tunnel
+
+import (
+	"bytes"
+	"testing"
+)
+
+func TestEncrypt(t *testing.T) {
+	key := "tokenpassphrase"
+	data := []byte("supersecret")
+
+	cipherText, err := Encrypt(data, key)
+	if err != nil {
+		t.Errorf("failed to encrypt data: %v", err)
+	}
+
+	// verify the cipherText is not the same as data
+	if bytes.Equal(data, cipherText) {
+		t.Error("encrypted data are the same as plaintext")
+	}
+}
+
+func TestDecrypt(t *testing.T) {
+	key := "tokenpassphrase"
+	data := []byte("supersecret")
+
+	cipherText, err := Encrypt(data, key)
+	if err != nil {
+		t.Errorf("failed to encrypt data: %v", err)
+	}
+
+	plainText, err := Decrypt(cipherText, key)
+	if err != nil {
+		t.Errorf("failed to decrypt data: %v", err)
+	}
+
+	// verify the plainText is the same as data
+	if !bytes.Equal(data, plainText) {
+		t.Error("decrypted data not the same as plaintext")
+	}
+}