Add Crypt based password functions

app/Classes/LDAP/Attribute/Password/SHA256crypt.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Classes\LDAP\Attribute\Password;
+
+final class SHA256crypt extends Base
+{
+	public const key = 'CRYPT';
+	protected const subkey = 'sha256crypt';
+	protected const salt = 5;
+	private const identifier = '$5$';
+
+	public static function subid(string $password): bool
+	{
+		return str_starts_with(self::password($password),self::identifier);
+	}
+
+	public function compare(string $source,string $compare): bool
+	{
+		return hash_equals($cp=self::password($source),crypt($compare,$cp));
+	}
+
+	public function encode(string $password,string $salt=NULL): string
+	{
+		if (is_null($salt))
+			$salt = sprintf('%s%s',self::identifier,random_salt(self::salt));
+
+		return sprintf('{%s}%s',self::key,crypt($password,$salt));
+	}
+}