Valid signature

sign/pdfinfo.go

@@ -0,0 +1,25 @@
+package sign
+
+import (
+	"strconv"
+)
+
+func (context *SignContext) createInfo() (info string, err error) {
+	original_info := context.PDFReader.Trailer().Key("Info")
+	info = strconv.Itoa(int(context.InfoData.ObjectId)) + " 0 obj\n"
+	info += "<<"
+
+	info_keys := original_info.Keys()
+	for _, key := range info_keys {
+		info += "/" + key
+		if key == "ModDate" {
+			info += pdfDateTime(context.SignData.Signature.Info.Date)
+		} else {
+			info += pdfString(original_info.Key(key).RawString())
+		}
+	}
+
+	info += ">>"
+	info += "\nendobj\n"
+	return info, nil
+}