Initial Commit

iTechSharp/srcbc/asn1/cryptopro/ECGOST3410ParamSetParameters.cs

@@ -0,0 +1,86 @@
+using System;
+using System.Collections;
+
+using Org.BouncyCastle.Math;
+
+namespace Org.BouncyCastle.Asn1.CryptoPro
+{
+    public class ECGost3410ParamSetParameters
+        : Asn1Encodable
+    {
+        internal readonly DerInteger p, q, a, b, x, y;
+
+        public static ECGost3410ParamSetParameters GetInstance(
+            Asn1TaggedObject	obj,
+            bool				explicitly)
+        {
+            return GetInstance(Asn1Sequence.GetInstance(obj, explicitly));
+        }
+
+        public static ECGost3410ParamSetParameters GetInstance(
+            object obj)
+        {
+            if (obj == null || obj is ECGost3410ParamSetParameters)
+            {
+                return (ECGost3410ParamSetParameters) obj;
+            }
+
+            if (obj is Asn1Sequence)
+            {
+                return new ECGost3410ParamSetParameters((Asn1Sequence) obj);
+            }
+
+            throw new ArgumentException("Invalid GOST3410Parameter: " + obj.GetType().Name);
+        }
+
+        public ECGost3410ParamSetParameters(
+            BigInteger a,
+            BigInteger b,
+            BigInteger p,
+            BigInteger q,
+            int        x,
+            BigInteger y)
+        {
+            this.a = new DerInteger(a);
+            this.b = new DerInteger(b);
+            this.p = new DerInteger(p);
+            this.q = new DerInteger(q);
+            this.x = new DerInteger(x);
+            this.y = new DerInteger(y);
+        }
+
+        public ECGost3410ParamSetParameters(
+            Asn1Sequence seq)
+        {
+			if (seq.Count != 6)
+				throw new ArgumentException("Wrong number of elements in sequence", "seq");
+
+			this.a = DerInteger.GetInstance(seq[0]);
+			this.b = DerInteger.GetInstance(seq[1]);
+			this.p = DerInteger.GetInstance(seq[2]);
+			this.q = DerInteger.GetInstance(seq[3]);
+			this.x = DerInteger.GetInstance(seq[4]);
+			this.y = DerInteger.GetInstance(seq[5]);
+        }
+
+		public BigInteger P
+		{
+			get { return p.PositiveValue; }
+		}
+
+		public BigInteger Q
+		{
+			get { return q.PositiveValue; }
+		}
+
+		public BigInteger A
+		{
+			get { return a.PositiveValue; }
+		}
+
+		public override Asn1Object ToAsn1Object()
+        {
+			return new DerSequence(a, b, p, q, x, y);
+        }
+    }
+}