Add support for SASL Kerberous realms. Closes #114

app/Classes/LDAP/Attribute/Password/SASL.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Classes\LDAP\Attribute\Password;
+
+final class SASL extends Base
+{
+	public const key = 'SASL';
+
+	public function encode(string $password): string
+	{
+		if (! str_contains($password,'@'))
+			return '';
+
+		// Ensure our id is lowercase, and realm is uppercase
+		list($id,$realm) = explode('@',$password);
+
+		return sprintf('{%s}%s@%s',self::key,strtolower($id),strtoupper($realm));
+	}
+}