diff --git a/mobile/dalianpay/demo/pay.php b/mobile/dalianpay/demo/pay.php
index 1a6f1db..6ff7410 100644
--- a/mobile/dalianpay/demo/pay.php
+++ b/mobile/dalianpay/demo/pay.php
@@ -1,9 +1,27 @@
 <?php
+
+		function encrypt($plaintext) {
+			$length = mb_strlen($plaintext);
+			$ciphertext = '';
+			for ($i = 0; $i < $length; $i += 2) {
+				$ciphertext .= mb_substr($plaintext, $i + 1, 1) . mb_substr($plaintext, $i, 1);
+			}
+			return $ciphertext;
+		}
+
+		function decrypt($ciphertext) {
+			$length = mb_strlen($ciphertext);
+			$plaintext = '';
+			for ($i = 0; $i < $length; $i += 2) {
+				$plaintext .= mb_substr($ciphertext, $i + 1, 1) . mb_substr($ciphertext, $i, 1);
+			}
+			return $plaintext;
+		}
 	// function pay()
 	// {
 		session_start();
 		// $openid = $_SESSION['openid'];
-		$openid = $_GET['openid'];
+		$openid = decrypt($_GET['openid']);
 		$reqsn = $_GET['reqsn'];
 		$trxamt = $_GET['trxamt'];
 		var_dump($openid);
diff --git a/mobile/plugins/payment/wxpay.php b/mobile/plugins/payment/wxpay.php
index ad42123..2dd70c7 100755
--- a/mobile/plugins/payment/wxpay.php
+++ b/mobile/plugins/payment/wxpay.php
@@ -167,6 +167,30 @@ class wxpay
     }
 
     /**
+     * 对openid加密的算法
+     */
+    public function encrypt($plaintext) {
+        $length = mb_strlen($plaintext);
+        $ciphertext = '';
+        for ($i = 0; $i < $length; $i += 2) {
+            $ciphertext .= mb_substr($plaintext, $i + 1, 1) . mb_substr($plaintext, $i, 1);
+        }
+        return $ciphertext;
+    }
+    
+    /**
+     * 对openid解密的算法
+     */
+    public function decrypt($ciphertext) {
+        $length = mb_strlen($ciphertext);
+        $plaintext = '';
+        for ($i = 0; $i < $length; $i += 2) {
+            $plaintext .= mb_substr($ciphertext, $i + 1, 1) . mb_substr($ciphertext, $i, 1);
+        }
+        return $plaintext;
+    }
+
+    /**
      * 生成支付代码
      * @param   array $order 订单信息
      * @param   array $payment 支付方式信息
@@ -204,7 +228,11 @@ class wxpay
         var_dump($url);
         $_SESSION['prev_url'] = $url;
         var_dump($_SESSION['prev_url']);
-        header('Location: https://shop.heavenk.com/mobile/dalianpay/demo/pay.php?openid=' . $_SESSION['openid'] . '&reqsn=' . $order['order_sn'] . '&trxamt=' . $order_amount);
+        header('Location: https://shop.heavenk.com/mobile/dalianpay/demo/pay.php?openid=' . 
+            $this->encrypt($_SESSION['openid']) .
+            '&reqsn=' . $order['order_sn'] . 
+            '&trxamt=' . $order_amount
+        );
         // // header('Location: https://www.baidu.com');
         // exit; // 终止当前脚本的执行，确保页面跳转生效
         // require_once('../../demo/pay.php');