1 files changed, 63 insertions, 0 deletions
diff --git a/crypto/src/asn1/Asn1Object.cs b/crypto/src/asn1/Asn1Object.cs
new file mode 100644
index 000000000..08bd599c1
--- /dev/null
+++ b/crypto/src/asn1/Asn1Object.cs
@@ -0,0 +1,63 @@
+using System;
+using System.IO;
+
+namespace Org.BouncyCastle.Asn1
+{
+    public abstract class Asn1Object
+		: Asn1Encodable
+    {
+		/// <summary>Create a base ASN.1 object from a byte array.</summary>
+		/// <param name="data">The byte array to parse.</param>
+		/// <returns>The base ASN.1 object represented by the byte array.</returns>
+		/// <exception cref="IOException">If there is a problem parsing the data.</exception>
+		public static Asn1Object FromByteArray(
+			byte[] data)
+		{
+			try
+			{
+				return new Asn1InputStream(data).ReadObject();
+			}
+			catch (InvalidCastException)
+			{
+				throw new IOException("cannot recognise object in stream");    
+			}
+		}
+
+		/// <summary>Read a base ASN.1 object from a stream.</summary>
+		/// <param name="inStr">The stream to parse.</param>
+		/// <returns>The base ASN.1 object represented by the byte array.</returns>
+		/// <exception cref="IOException">If there is a problem parsing the data.</exception>
+		public static Asn1Object FromStream(
+			Stream inStr)
+		{
+			try
+			{
+				return new Asn1InputStream(inStr).ReadObject();
+			}
+			catch (InvalidCastException)
+			{
+				throw new IOException("cannot recognise object in stream");    
+			}
+		}
+
+		public sealed override Asn1Object ToAsn1Object()
+        {
+            return this;
+        }
+
+		internal abstract void Encode(DerOutputStream derOut);
+
+		protected abstract bool Asn1Equals(Asn1Object asn1Object);
+		protected abstract int Asn1GetHashCode();
+
+		internal bool CallAsn1Equals(Asn1Object obj)
+		{
+			return Asn1Equals(obj);
+		}
+
+		internal int CallAsn1GetHashCode()
+		{
+			return Asn1GetHashCode();
+		}
+	}
+}