Add class

HRCEncryptor.php

@@ -0,0 +1,67 @@
+<?php
+
+/**
+ * Class HRCEncryptor
+ *
+ * For key need use Encryption::format($company->code)
+ */
+class HRCEncryptor
+{
+    const IV = 'AiFFzylt4NjaOflK';
+
+    public static function format($key)
+    {
+        $reverse = 0;
+        $n = $key;
+        while ($n > 0)
+        {
+            $reverse = $reverse * 10;
+            $reverse = $reverse + $n%10;
+            $n = (int)($n/10);
+        }
+
+        return pow(($key + $reverse), 2);
+    }
+
+    public static function key($key)
+    {
+        while(strlen($key) < 32) {
+            $key .= $key;
+        }
+
+        return substr($key, 0, 32);
+    }
+
+    public static function encrypt($content, $key)
+    {
+        return base64_encode(openssl_encrypt($content, 'aes-256-cbc', self::key($key), OPENSSL_RAW_DATA, self::IV));
+    }
+
+    public static function decrypt($content, $key)
+    {
+        return openssl_decrypt(base64_decode($content), 'aes-256-cbc', self::key($key), OPENSSL_RAW_DATA, self::IV);
+    }
+
+    public static function sign($content, $key)
+    {
+        return md5($key . md5($content));
+    }
+
+    public static function check($signature, $public_key)
+    {
+        $fields = $_REQUEST;
+        ksort($fields);
+
+        $params = [];
+        foreach($fields as $key => $value) {
+            if($key != 'signature') {
+                $params[] = $key . '=' . $value;
+            }
+        }
+
+        $check = md5($public_key . md5(implode('&', $params)));
+
+        return $check == $signature;
+    }
+
+}