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-rw-r--r--crypto/src/asn1/pkcs/PBEParameter.cs60
1 files changed, 60 insertions, 0 deletions
diff --git a/crypto/src/asn1/pkcs/PBEParameter.cs b/crypto/src/asn1/pkcs/PBEParameter.cs
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index 000000000..80d5ec3e1
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+++ b/crypto/src/asn1/pkcs/PBEParameter.cs
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+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	salt;
+		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");
+
+			salt = Asn1OctetString.GetInstance(seq[0]);
+			iterationCount = DerInteger.GetInstance(seq[1]);
+		}
+
+		public PbeParameter(byte[] salt, int iterationCount)
+		{
+			this.salt = new DerOctetString(salt);
+			this.iterationCount = new DerInteger(iterationCount);
+		}
+
+		public byte[] GetSalt()
+		{
+			return salt.GetOctets();
+		}
+
+		public BigInteger IterationCount
+		{
+			get { return iterationCount.Value; }
+		}
+
+		public override Asn1Object ToAsn1Object()
+		{
+			return new DerSequence(salt, iterationCount);
+		}
+	}
+}