Initial Commit

iTechSharp/srcbc/bcpg/DsaPublicBcpgKey.cs

@@ -0,0 +1,80 @@
+using System;
+
+using Org.BouncyCastle.Math;
+
+namespace Org.BouncyCastle.Bcpg
+{
+	/// <remarks>Base class for a DSA public key.</remarks>
+	public class DsaPublicBcpgKey
+		: BcpgObject, IBcpgKey
+    {
+        private readonly MPInteger p, q, g, y;
+
+		/// <param name="bcpgIn">The stream to read the packet from.</param>
+		public DsaPublicBcpgKey(
+			BcpgInputStream bcpgIn)
+		{
+			this.p = new MPInteger(bcpgIn);
+			this.q = new MPInteger(bcpgIn);
+			this.g = new MPInteger(bcpgIn);
+			this.y = new MPInteger(bcpgIn);
+		}
+
+		public DsaPublicBcpgKey(
+			BigInteger	p,
+			BigInteger	q,
+			BigInteger	g,
+			BigInteger	y)
+		{
+			this.p = new MPInteger(p);
+			this.q = new MPInteger(q);
+			this.g = new MPInteger(g);
+			this.y = new MPInteger(y);
+		}
+
+		/// <summary>The format, as a string, always "PGP".</summary>
+		public string Format
+		{
+			get { return "PGP"; }
+		}
+
+		/// <summary>Return the standard PGP encoding of the key.</summary>
+        public override byte[] GetEncoded()
+        {
+            try
+            {
+            	return base.GetEncoded();
+            }
+            catch (Exception)
+            {
+                return null;
+            }
+        }
+
+		public override void Encode(
+			BcpgOutputStream bcpgOut)
+		{
+			bcpgOut.WriteObjects(p, q, g, y);
+		}
+
+		public BigInteger G
+		{
+			get { return g.Value; }
+		}
+
+		public BigInteger P
+		{
+			get { return p.Value; }
+		}
+
+		public BigInteger Q
+		{
+			get { return q.Value; }
+		}
+
+		public BigInteger Y
+		{
+			get { return y.Value; }
+		}
+    }
+}