Update Encryptor.php

easy-swoole · Nov 18, 2020 · 5ae7eba · 5ae7eba
1 parent 982e490
commit 5ae7eba
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/OfficialAccount/Encryptor.php b/src/OfficialAccount/Encryptor.php
@@ -152,7 +152,7 @@ public static function encodePKCS($data, $blockSize = 32)
     public static function decodePKCS($data)
     {
         // 根据PKCS 补位时如果为整数倍块大小 则补上块大小个字节的补位 最后一位必是补位字节
-        $pad = ord($data{strlen($data) - 1});
+        $pad = ord($data[strlen($data) - 1]);
         if ($pad > strlen($data)) {
             return false;
         }
@@ -161,4 +161,4 @@ public static function decodePKCS($data)
         }
         return substr($data, 0, -1 * $pad);
     }
-}
+}