diff --git a/src/Illuminate/Contracts/Encryption/Encrypter.php b/src/Illuminate/Contracts/Encryption/Encrypter.php
index 4747b68ad00e..5a5c1e0fbb3d 100644
--- a/src/Illuminate/Contracts/Encryption/Encrypter.php
+++ b/src/Illuminate/Contracts/Encryption/Encrypter.php
@@ -25,4 +25,24 @@ public function encrypt($value, $serialize = true);
      * @throws \Illuminate\Contracts\Encryption\DecryptException
      */
     public function decrypt($payload, $unserialize = true);
+
+    /**
+     * Encrypt a string without serialization.
+     *
+     * @param  string  $value
+     * @return string
+     *
+     * @throws \Illuminate\Contracts\Encryption\EncryptException
+     */
+    public function encryptString($value);
+
+    /**
+     * Decrypt the given string without unserialization.
+     *
+     * @param  string  $payload
+     * @return string
+     *
+     * @throws \Illuminate\Contracts\Encryption\DecryptException
+     */
+    public function decryptString($payload);
 }