--- asn1.go	2022-09-15 13:21:17.000000000 +0200
+++ asn1_new.go	2022-09-15 13:22:12.000000000 +0200
@@ -255,7 +255,7 @@
 	switch bytes[0] {
 	case 0:
 		*out = false
-	case 0xff:
+	case 1, 0xff:
 		*out = true
 	default:
 		return false