1 files changed, 21 insertions, 0 deletions
diff --git a/weed/util/cipher.go b/weed/util/cipher.go
index f044c2ca3..7bcb6559a 100644
--- a/weed/util/cipher.go
+++ b/weed/util/cipher.go
@@ -1,11 +1,14 @@
 package util
 
 import (
+	"bytes"
 	"crypto/aes"
 	"crypto/cipher"
 	"crypto/rand"
 	"errors"
+	"fmt"
 	"io"
+	"io/ioutil"
 
 	"github.com/chrislusf/seaweedfs/weed/glog"
 )
@@ -58,3 +61,21 @@ 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
+}