Initial Commit

iTechSharp/srcbc/asn1/pkcs/PBEParameter.cs

@@ -0,0 +1,64 @@
+using System;
+using System.Collections;
+
+using Org.BouncyCastle.Asn1;
+using Org.BouncyCastle.Math;
+
+namespace Org.BouncyCastle.Asn1.Pkcs
+{
+    public class PbeParameter
+		: Asn1Encodable
+    {
+        private readonly Asn1OctetString octStr;
+        private readonly DerInteger iterationCount;
+
+		public static PbeParameter GetInstance(
+            object obj)
+        {
+            if (obj is PbeParameter || obj == null)
+            {
+                return (PbeParameter) obj;
+            }
+
+			if (obj is Asn1Sequence)
+            {
+                return new PbeParameter((Asn1Sequence) obj);
+            }
+
+			throw new ArgumentException("Unknown object in factory: " + obj.GetType().FullName, "obj");
+		}
+
+		private PbeParameter(
+			Asn1Sequence seq)
+        {
+			if (seq.Count != 2)
+				throw new ArgumentException("Wrong number of elements in sequence", "seq");
+
+			octStr = Asn1OctetString.GetInstance(seq[0]);
+            iterationCount = DerInteger.GetInstance(seq[1]);
+        }
+
+		public PbeParameter(
+            byte[]	salt,
+            int		iterationCount)
+        {
+            this.octStr = new DerOctetString(salt);
+            this.iterationCount = new DerInteger(iterationCount);
+        }
+
+		public byte[] GetSalt()
+        {
+            return octStr.GetOctets();
+        }
+
+		public BigInteger IterationCount
+		{
+			get { return iterationCount.Value; }
+		}
+
+		public override Asn1Object ToAsn1Object()
+        {
+			return new DerSequence(octStr, iterationCount);
+        }
+    }
+}