1 files changed, 4 insertions, 9 deletions
diff --git a/crypto/src/asn1/DerNull.cs b/crypto/src/asn1/DerNull.cs
index 947acaf0b..ddf61391b 100644
--- a/crypto/src/asn1/DerNull.cs
+++ b/crypto/src/asn1/DerNull.cs
@@ -16,19 +16,14 @@ namespace Org.BouncyCastle.Asn1
 		{
 		}
 
-        internal override bool EncodeConstructed(int encoding)
+        internal override IAsn1Encoding GetEncoding(int encoding)
         {
-            return false;
+            return new PrimitiveEncoding(Asn1Tags.Universal, Asn1Tags.Null, ZeroBytes);
         }
 
-        internal override int EncodedLength(int encoding, bool withID)
+        internal override IAsn1Encoding GetEncodingImplicit(int encoding, int tagClass, int tagNo)
         {
-            return Asn1OutputStream.GetLengthOfEncodingDL(withID, 0);
-        }
-
-        internal override void Encode(Asn1OutputStream asn1Out, bool withID)
-		{
-            asn1Out.WriteEncodingDL(withID, Asn1Tags.Null, ZeroBytes);
+            return new PrimitiveEncoding(tagClass, tagNo, ZeroBytes);
         }
 
         protected override bool Asn1Equals(Asn1Object asn1Object)