From 1b7f3dca039672680e035ce5cf6f9e90dcbf43cb Mon Sep 17 00:00:00 2001
From: "Namhyeon, Go" <gnh1201@gmail.com>
Date: Sun, 30 Sep 2018 03:12:08 +0900
Subject: [PATCH] Create sqAES.php

---
 vendor/jCryption/sqAES.php | 75 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 vendor/jCryption/sqAES.php

diff --git a/vendor/jCryption/sqAES.php b/vendor/jCryption/sqAES.php
new file mode 100644
index 0000000..f08ee64
--- /dev/null
+++ b/vendor/jCryption/sqAES.php
@@ -0,0 +1,75 @@
+<?php
+
+class sqAES
+{
+    /**
+     * decrypt AES 256
+     *
+     * @param string $password
+     * @param data $edata
+     *
+     * @return dencrypted data
+     */
+    public static function decrypt($password, $edata)
+    {
+        $data = base64_decode($edata);
+        $salt = substr($data, 8, 8);
+        $ct = substr($data, 16);
+
+        /**
+         * From https://github.com/mdp/gibberish-aes
+         *
+         * Number of rounds depends on the size of the AES in use
+         * 3 rounds for 256
+         *        2 rounds for the key, 1 for the IV
+         * 2 rounds for 128
+         *        1 round for the key, 1 round for the IV
+         * 3 rounds for 192 since it's not evenly divided by 128 bits
+         */
+        $rounds = 3;
+        $data00 = $password.$salt;
+        $md5_hash = array();
+        $md5_hash[0] = md5($data00, true);
+        $result = $md5_hash[0];
+
+        for ($i = 1; $i < $rounds; $i++) {
+            $md5_hash[$i] = md5($md5_hash[$i - 1].$data00, true);
+            $result .= $md5_hash[$i];
+        }
+
+        $key = substr($result, 0, 32);
+        $iv  = substr($result, 32, 16);
+
+        return openssl_decrypt($ct, 'aes-256-cbc', $key, true, $iv);
+    }
+
+    /**
+     * crypt AES 256
+     *
+     * @param string $password
+     * @param data $data
+     *
+     * @return base64 encrypted data
+     */
+    public static function crypt($password, $data)
+    {
+        // Set a random salt
+        $salt = openssl_random_pseudo_bytes(8);
+
+        $salted = '';
+        $dx = '';
+
+        // Salt the key(32) and iv(16) = 48
+        while (strlen($salted) < 48) {
+            $dx = md5($dx.$password.$salt, true);
+            $salted .= $dx;
+        }
+
+        $key = substr($salted, 0, 32);
+        $iv  = substr($salted, 32, 16);
+
+        $encrypted_data = openssl_encrypt($data, 'aes-256-cbc', $key, true, $iv);
+
+        return base64_encode('Salted__'.$salt.$encrypted_data);
+    }
+}