From e2e691d9c23d2b18b032f4d464ca0756c134ed87 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Fri, 13 Mar 2020 23:53:15 -0700
Subject: [PATCH] clean up, add test

---
 weed/util/cipher.go      | 21 ---------------------
 weed/util/cipher_test.go | 17 +++++++++++++++++
 2 files changed, 17 insertions(+), 21 deletions(-)
 create mode 100644 weed/util/cipher_test.go

diff --git a/weed/util/cipher.go b/weed/util/cipher.go
index 7bcb6559a..f044c2ca3 100644
--- a/weed/util/cipher.go
+++ b/weed/util/cipher.go
@@ -1,14 +1,11 @@
 package util
 
 import (
-	"bytes"
 	"crypto/aes"
 	"crypto/cipher"
 	"crypto/rand"
 	"errors"
-	"fmt"
 	"io"
-	"io/ioutil"
 
 	"github.com/chrislusf/seaweedfs/weed/glog"
 )
@@ -61,21 +58,3 @@ func Decrypt(ciphertext []byte, key CipherKey) ([]byte, error) {
 	nonce, ciphertext := ciphertext[:nonceSize], ciphertext[nonceSize:]
 	return gcm.Open(nil, nonce, ciphertext, nil)
 }
-
-func EncryptReader(clearReader io.Reader) (cipherKey CipherKey, encryptedReader io.ReadCloser, clearDataLen, encryptedDataLen int, err error) {
-	clearData, err := ioutil.ReadAll(clearReader)
-	if err != nil {
-		err = fmt.Errorf("read raw input: %v", err)
-		return
-	}
-	clearDataLen = len(clearData)
-	cipherKey = GenCipherKey()
-	encryptedData, err := Encrypt(clearData, cipherKey)
-	if err != nil {
-		err = fmt.Errorf("encrypt input: %v", err)
-		return
-	}
-	encryptedDataLen = len(encryptedData)
-	encryptedReader = ioutil.NopCloser(bytes.NewReader(encryptedData))
-	return
-}
diff --git a/weed/util/cipher_test.go b/weed/util/cipher_test.go
new file mode 100644
index 000000000..026c96ea3
--- /dev/null
+++ b/weed/util/cipher_test.go
@@ -0,0 +1,17 @@
+package util
+
+import (
+	"encoding/base64"
+	"testing"
+)
+
+func TestSameAsJavaImplementation(t *testing.T) {
+	str := "QVVhmqg112NMT7F+G/7QPynqSln3xPIhKdFGmTVKZD6IS0noyr2Z5kXFF6fPjZ/7Hq8kRhlmLeeqZUccxyaZHezOdgkjS6d4NTdHf5IjXzk7"
+	cipherText, _ := base64.StdEncoding.DecodeString(str)
+	secretKey := []byte("256-bit key for AES 256 GCM encr")
+	plantext, err := Decrypt(cipherText, CipherKey(secretKey))
+	if err != nil {
+		println(err.Error())
+	}
+	println(string(plantext))
+}