Hide some crypto functions

1 files changed, 4 insertions, 4 deletions

diff --git a/inform/crypto.go b/inform/crypto.go
index 4e82741..8786059 100644
--- a/inform/crypto.go
+++ b/inform/crypto.go
@@ -10,13 +10,13 @@ import (
         "errors"
 )
 
-func Pad(src []byte, blockSize int) []byte {
+func pad(src []byte, blockSize int) []byte {
         padLen := blockSize - (len(src) % blockSize)
         padText := bytes.Repeat([]byte{byte(padLen)}, padLen)
         return append(src, padText...)
 }
 
-func Unpad(src []byte, blockSize int) ([]byte, error) {
+func unpad(src []byte, blockSize int) ([]byte, error) {
         srcLen := len(src)
         paddingLen := int(src[srcLen-1])
         if paddingLen >= srcLen || paddingLen > blockSize {
@@ -51,7 +51,7 @@ func makeAESIV() ([]byte, error) {
 func Encrypt(payload []byte, key string) ([]byte, []byte, error) {
         ct := make([]byte, len(payload))
         copy(ct, payload)
-        ct = Pad(ct, aes.BlockSize)
+        ct = pad(ct, aes.BlockSize)
 
         iv, err := makeAESIV()
         if err != nil {
@@ -127,7 +127,7 @@ func decryptCBC(payload, iv []byte, key string) ([]byte, error) {
         mode := cipher.NewCBCDecrypter(block, iv)
         mode.CryptBlocks(b, payload)
 
-        u, err := Unpad(b, aes.BlockSize)
+        u, err := unpad(b, aes.BlockSize)
         if err != nil {
                 return nil, err
         }