Sync changes v29.0.0 from IceHrmPro (https://icehrm.com/purchase-icehrmpro)

core/lib/saml2/encryption.php

@@ -0,0 +1,44 @@
+<?php
+/**
+ * @package    miniOrange
+ * @author	   miniOrange Security Software Pvt. Ltd.
+ * @license    GNU/GPLv3
+ * @copyright  Copyright 2015 miniOrange. All Rights Reserved.
+ *
+ *
+ * This file is part of miniOrange SAML plugin.
+ */
+
+class AESEncryption {
+    /**
+     * @param string $data - the key=value pairs separated with &
+     * @return string
+     */
+    public static function encrypt_data($data, $key) {
+        $key    = openssl_digest($key, 'sha256');
+        $method = 'AES-128-ECB';
+        $ivSize = openssl_cipher_iv_length($method);
+        $iv     = openssl_random_pseudo_bytes($ivSize);
+        $strCrypt = openssl_encrypt ($data, $method, $key,OPENSSL_RAW_DATA||OPENSSL_ZERO_PADDING, $iv);
+        return base64_encode($iv.$strCrypt);
+    }
+
+
+    /**
+     * @param string $data - crypt response from Sagepay
+     * @return string
+     */
+    public static function decrypt_data($data, $key) {
+        $strIn = base64_decode($data);
+        $key    = openssl_digest($key, 'sha256');
+        $method = 'AES-128-ECB';
+        $ivSize = openssl_cipher_iv_length($method);
+        $iv     = substr($strIn,0,$ivSize);
+        $data   = substr($strIn,$ivSize);
+        $clear  = openssl_decrypt ($data, $method, $key, OPENSSL_RAW_DATA||OPENSSL_ZERO_PADDING, $iv);
+
+        return $clear;
+    }
+
+}
+?>