1 files changed, 2 insertions, 0 deletions
diff --git a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/stamping/CertificateResolver.java b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/stamping/CertificateResolver.java
index 78dcbe23..7f8b0a0b 100644
--- a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/stamping/CertificateResolver.java
+++ b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/stamping/CertificateResolver.java
@@ -26,6 +26,8 @@ public class CertificateResolver implements IResolver {
         this.certificate = certificate;
         this.ctx = new OgnlContext();
 
+        this.ctx.put("sn", this.certificate.getSerialNumber().toString());
+        
         try {
             Map<String, String> issuerDNMap = DNUtils.dnToMap(certificate.getIssuerDN().getName());
             this.ctx.put("issuer", issuerDNMap);