fix firefox for windows decrypt error

utils/utils.go

@@ -17,9 +17,9 @@ import (
 )
 
 var (
-	passwordIsEmpty = errors.New("decrypt fail, password is empty")
+	errPasswordIsEmpty     = errors.New("decrypt failed, password is empty")
-
 	errBrowserNotSupported = errors.New("browser not supported")
+	errKeyIsEmpty          = errors.New("input [security find-generic-password -wa 'Chrome'] in terminal")
 	VersionUnder80         bool
 )
 
@@ -227,9 +227,7 @@ func DecodeLogin(decodeItem []byte) (pbe LoginPBE, err error) {
 }
 
 func aes128CBCDecrypt(key, iv, encryptPass []byte) ([]byte, error) {
-	if len(chromeKey) == 0 {
+
-		return []byte{}, nil
-	}
 	block, err := aes.NewCipher(key)
 	if err != nil {
 		return []byte{}, err

utils/utils_darwin.go

@@ -88,11 +88,14 @@ func decryptChromeKey(chromePass []byte) {
 
 func DecryptChromePass(encryptPass []byte) (string, error) {
 	if len(encryptPass) > 3 {
+		if len(chromeKey) == 0 {
+			return "", errKeyIsEmpty
+		}
 		m, err := aes128CBCDecrypt(chromeKey, iv, encryptPass[3:])
 		return string(m), err
 	} else {
 		return "", &DecryptError{
-			err: passwordIsEmpty,
+			err: errPasswordIsEmpty,
 		}
 	}
 }

utils/utils_windows.go

@@ -106,7 +106,7 @@ func DecryptChromePass(encryptPass []byte) (string, error) {
 		// remove prefix 'v10'
 		return aesGCMDecrypt(encryptPass[15:], chromeKey, encryptPass[3:15])
 	} else {
-		return "", passwordIsEmpty
+		return "", errPasswordIsEmpty
 	}
 }