From 1d5002593acb237433a98512c6343587b03ebe5d Mon Sep 17 00:00:00 2001
From: Andrew Smith <andrew.smith@intelitycorp.com>
Date: Thu, 22 Feb 2018 19:23:17 -0500
Subject: [PATCH] Don't use asn1.TagNull, it was also introduced in Go 1.9

---
 x509.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/x509.go b/x509.go
index 54f165e..195fd0e 100644
--- a/x509.go
+++ b/x509.go
@@ -80,7 +80,7 @@ type pssParameters struct {
 }
 
 // asn1.NullBytes is not available prior to Go 1.9
-var nullBytes = []byte{asn1.TagNull, 0}
+var nullBytes = []byte{5, 0}
 
 func getSignatureAlgorithmFromAI(ai pkix.AlgorithmIdentifier) x509.SignatureAlgorithm {
 	if !ai.Algorithm.Equal(oidSignatureRSAPSS) {