Initial Commit

iTechSharp/srcbc/asn1/misc/IDEACBCPar.cs

@@ -0,0 +1,68 @@
+using System;
+
+using Org.BouncyCastle.Asn1;
+
+namespace Org.BouncyCastle.Asn1.Misc
+{
+    public class IdeaCbcPar
+        : Asn1Encodable
+    {
+        internal Asn1OctetString iv;
+
+		public static IdeaCbcPar GetInstance(
+            object o)
+        {
+            if (o is IdeaCbcPar)
+            {
+                return (IdeaCbcPar) o;
+            }
+
+			if (o is Asn1Sequence)
+            {
+                return new IdeaCbcPar((Asn1Sequence) o);
+            }
+
+			throw new ArgumentException("unknown object in IDEACBCPar factory");
+        }
+
+		public IdeaCbcPar(
+            byte[] iv)
+        {
+            this.iv = new DerOctetString(iv);
+        }
+
+		private IdeaCbcPar(
+            Asn1Sequence seq)
+        {
+			if (seq.Count == 1)
+			{
+				iv = (Asn1OctetString) seq[0];
+			}
+        }
+
+		public byte[] GetIV()
+        {
+			return iv == null ? null : iv.GetOctets();
+        }
+
+		/**
+         * Produce an object suitable for an Asn1OutputStream.
+         * <pre>
+         * IDEA-CBCPar ::= Sequence {
+         *                      iv    OCTET STRING OPTIONAL -- exactly 8 octets
+         *                  }
+         * </pre>
+         */
+        public override Asn1Object ToAsn1Object()
+        {
+            Asn1EncodableVector v = new Asn1EncodableVector();
+
+			if (iv != null)
+            {
+                v.Add(iv);
+            }
+
+			return new DerSequence(v);
+        }
+    }
+}