1 files changed, 35 insertions, 0 deletions
diff --git a/crypto/src/asn1/Asn1OutputStream.cs b/crypto/src/asn1/Asn1OutputStream.cs
new file mode 100644
index 000000000..39c8b1e5e
--- /dev/null
+++ b/crypto/src/asn1/Asn1OutputStream.cs
@@ -0,0 +1,35 @@
+using System;
+using System.IO;
+
+namespace Org.BouncyCastle.Asn1
+{
+    public class Asn1OutputStream
+        : DerOutputStream
+    {
+        public Asn1OutputStream(Stream os) : base(os)
+        {
+        }
+
+		[Obsolete("Use version taking an Asn1Encodable arg instead")]
+        public override void WriteObject(
+            object    obj)
+        {
+            if (obj == null)
+            {
+                WriteNull();
+            }
+            else if (obj is Asn1Object)
+            {
+                ((Asn1Object)obj).Encode(this);
+            }
+            else if (obj is Asn1Encodable)
+            {
+                ((Asn1Encodable)obj).ToAsn1Object().Encode(this);
+            }
+            else
+            {
+                throw new IOException("object not Asn1Encodable");
+            }
+        }
+    }
+}