@@ -107,10 +107,18 @@
 	uint8_t type = 0xC0;
 
 	return [OFData dataWithItems: &type
 			       count: 1];
 }
+
+- (OFData *)ASN1DERRepresentation
+{
+	const unsigned char bytes[] = { OF_ASN1_TAG_NUMBER_NULL, 0 };
+
+	return [OFData dataWithItems: bytes
+			       count: sizeof(bytes)];
+}
 
 - (instancetype)autorelease
 {
 	return self;
 }