Initial Commit

iTechSharp/srcbc/asn1/misc/CAST5CBCParameters.cs

@@ -0,0 +1,74 @@
+using System;
+
+using Org.BouncyCastle.Asn1;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Asn1.Misc
+{
+    public class Cast5CbcParameters
+        : Asn1Encodable
+    {
+        private readonly DerInteger keyLength;
+        private readonly Asn1OctetString iv;
+
+		public static Cast5CbcParameters GetInstance(
+            object o)
+        {
+            if (o is Cast5CbcParameters)
+            {
+                return (Cast5CbcParameters) o;
+            }
+
+			if (o is Asn1Sequence)
+            {
+                return new Cast5CbcParameters((Asn1Sequence) o);
+            }
+
+			throw new ArgumentException("unknown object in Cast5CbcParameters factory");
+        }
+
+		public Cast5CbcParameters(
+            byte[]	iv,
+            int		keyLength)
+        {
+            this.iv = new DerOctetString(iv);
+            this.keyLength = new DerInteger(keyLength);
+        }
+
+		private Cast5CbcParameters(
+            Asn1Sequence seq)
+        {
+			if (seq.Count != 2)
+				throw new ArgumentException("Wrong number of elements in sequence", "seq");
+
+			iv = (Asn1OctetString) seq[0];
+            keyLength = (DerInteger) seq[1];
+        }
+
+		public byte[] GetIV()
+        {
+			return Arrays.Clone(iv.GetOctets());
+		}
+
+		public int KeyLength
+		{
+			get { return keyLength.Value.IntValue; }
+		}
+
+		/**
+         * Produce an object suitable for an Asn1OutputStream.
+         * <pre>
+         * cast5CBCParameters ::= Sequence {
+         *                           iv         OCTET STRING DEFAULT 0,
+         *                                  -- Initialization vector
+         *                           keyLength  Integer
+         *                                  -- Key length, in bits
+         *                      }
+         * </pre>
+         */
+        public override Asn1Object ToAsn1Object()
+        {
+			return new DerSequence(iv, keyLength);
+        }
+    }
+}