1 files changed, 78 insertions, 0 deletions
diff --git a/Crypto/src/asn1/Asn1Encodable.cs b/Crypto/src/asn1/Asn1Encodable.cs
new file mode 100644
index 000000000..e3dd9a14c
--- /dev/null
+++ b/Crypto/src/asn1/Asn1Encodable.cs
@@ -0,0 +1,78 @@
+using System.IO;
+
+namespace Org.BouncyCastle.Asn1
+{
+	public abstract class Asn1Encodable
+		: IAsn1Convertible
+    {
+		public const string Der = "DER";
+		public const string Ber = "BER";
+
+		public byte[] GetEncoded()
+        {
+            MemoryStream bOut = new MemoryStream();
+            Asn1OutputStream aOut = new Asn1OutputStream(bOut);
+
+			aOut.WriteObject(this);
+
+			return bOut.ToArray();
+        }
+
+		public byte[] GetEncoded(
+			string encoding)
+		{
+			if (encoding.Equals(Der))
+			{
+				MemoryStream bOut = new MemoryStream();
+				DerOutputStream dOut = new DerOutputStream(bOut);
+
+				dOut.WriteObject(this);
+
+				return bOut.ToArray();
+			}
+
+			return GetEncoded();
+		}
+
+		/**
+		* Return the DER encoding of the object, null if the DER encoding can not be made.
+		*
+		* @return a DER byte array, null otherwise.
+		*/
+		public byte[] GetDerEncoded()
+		{
+			try
+			{
+				return GetEncoded(Der);
+			}
+			catch (IOException)
+			{
+				return null;
+			}
+		}
+
+		public sealed override int GetHashCode()
+		{
+			return ToAsn1Object().CallAsn1GetHashCode();
+		}
+
+		public sealed override bool Equals(
+			object obj)
+		{
+			if (obj == this)
+				return true;
+
+			IAsn1Convertible other = obj as IAsn1Convertible;
+
+			if (other == null)
+				return false;
+
+			Asn1Object o1 = ToAsn1Object();
+			Asn1Object o2 = other.ToAsn1Object();
+
+			return o1 == o2 || o1.CallAsn1Equals(o2);
+		}
+
+		public abstract Asn1Object ToAsn1Object();
+    }
+}