1 files changed, 62 insertions, 0 deletions
diff --git a/crypto/src/asn1/x9/DHValidationParms.cs b/crypto/src/asn1/x9/DHValidationParms.cs
new file mode 100644
index 000000000..a37964cfb
--- /dev/null
+++ b/crypto/src/asn1/x9/DHValidationParms.cs
@@ -0,0 +1,62 @@
+using System;
+
+namespace Org.BouncyCastle.Asn1.X9
+{
+	public class DHValidationParms
+		: Asn1Encodable
+	{
+		private readonly DerBitString seed;
+		private readonly DerInteger pgenCounter;
+
+		public static DHValidationParms GetInstance(Asn1TaggedObject obj, bool isExplicit)
+		{
+			return GetInstance(Asn1Sequence.GetInstance(obj, isExplicit));
+		}
+
+		public static DHValidationParms GetInstance(object obj)
+		{
+			if (obj == null || obj is DHDomainParameters)
+				return (DHValidationParms)obj;
+
+			if (obj is Asn1Sequence)
+				return new DHValidationParms((Asn1Sequence)obj);
+
+			throw new ArgumentException("Invalid DHValidationParms: " + obj.GetType().FullName, "obj");
+		}
+		
+		public DHValidationParms(DerBitString seed, DerInteger pgenCounter)
+		{
+			if (seed == null)
+				throw new ArgumentNullException("seed");
+			if (pgenCounter == null)
+				throw new ArgumentNullException("pgenCounter");
+
+			this.seed = seed;
+			this.pgenCounter = pgenCounter;
+		}
+
+		private DHValidationParms(Asn1Sequence seq)
+		{
+			if (seq.Count != 2)
+				throw new ArgumentException("Bad sequence size: " + seq.Count, "seq");
+
+			this.seed = DerBitString.GetInstance(seq[0]);
+			this.pgenCounter = DerInteger.GetInstance(seq[1]);
+		}
+
+		public DerBitString Seed
+		{
+			get { return this.seed; }
+		}
+
+		public DerInteger PgenCounter
+		{
+			get { return this.pgenCounter; }
+		}
+
+		public override Asn1Object ToAsn1Object()
+		{
+			return new DerSequence(seed, pgenCounter);
+		}
+	}
+}