From ac2be7b9c212bd59fc2648a8b728640c96eae69e Mon Sep 17 00:00:00 2001
From: tigp <24852530+tigp@users.noreply.github.com>
Date: Mon, 16 Jul 2018 00:12:09 +0200
Subject: [PATCH] set certificate type to 1 if not provided

---
 sign/sign.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sign/sign.go b/sign/sign.go
index 266d9fd..0c6a4fe 100644
--- a/sign/sign.go
+++ b/sign/sign.go
@@ -150,6 +150,9 @@ func Sign(input io.ReadSeeker, output io.Writer, rdr *pdf.Reader, size int64, si
 
 func (context *SignContext) SignPDF() error {
 	// set defaults
+	if context.SignData.Signature.CertType == 0 {
+		context.SignData.Signature.CertType = 1
+	}
 	if context.SignData.Signature.DocMDPPerm == 0 {
 		context.SignData.Signature.DocMDPPerm = 1
 	}