From 4cf6ed9e0c83942cba1011d267e57b403e1e2ae1 Mon Sep 17 00:00:00 2001
From: Paolo <bison@technikum-wien.at>
Date: Wed, 4 Dec 2019 13:27:49 +0100
Subject: [PATCH] Added new CryptLib as a collection of different
 encryption/hashing algorithms based on phpseclib

---
 application/libraries/CryptLib.php | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 application/libraries/CryptLib.php

diff --git a/application/libraries/CryptLib.php b/application/libraries/CryptLib.php
new file mode 100644
index 000000000..ea19f3e5b
--- /dev/null
+++ b/application/libraries/CryptLib.php
@@ -0,0 +1,28 @@
+<?php
+
+if (!defined('BASEPATH')) exit('No direct script access allowed');
+
+use phpseclib\Crypt\Rijndael;
+
+/**
+ * Collection of different encryption/hashing algorithms
+ */
+class CryptLib
+{
+	/**
+	 * Encrypt using the Rijndael algorithm with a key length of 256 bits and the ECB mode
+	 * It is possible to disable the padding, enabled by default
+	 */
+	public static function RIJNDAEL_256_ECB($value, $key, $paddingDisabled = false)
+	{
+		if (isEmptyString($key) || strlen($value) % 32 != 0) return null;
+
+		$cipher = new Rijndael(Rijndael::MODE_ECB);
+		$cipher->setBlockLength(256);
+		$cipher->setKey($key);
+
+		if ($paddingDisabled === true) $cipher->disablePadding();
+
+		return $cipher->encrypt($value);
+	}
+}