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Assets/BestHTTP/SecureProtocol/crypto/tls/ServerDHParams.cs

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+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+
+using System;
+using System.IO;
+
+using Org.BouncyCastle.Crypto.Parameters;
+using Org.BouncyCastle.Math;
+
+namespace Org.BouncyCastle.Crypto.Tls
+{
+    public class ServerDHParams
+    {
+        protected readonly DHPublicKeyParameters mPublicKey;
+
+        public ServerDHParams(DHPublicKeyParameters publicKey)
+        {
+            if (publicKey == null)
+                throw new ArgumentNullException("publicKey");
+
+            this.mPublicKey = publicKey;
+        }
+
+        public virtual DHPublicKeyParameters PublicKey
+        {
+            get { return mPublicKey; }
+        }
+
+        /**
+         * Encode this {@link ServerDHParams} to a {@link Stream}.
+         * 
+         * @param output
+         *            the {@link Stream} to encode to.
+         * @throws IOException
+         */
+        public virtual void Encode(Stream output)
+        {
+            DHParameters dhParameters = mPublicKey.Parameters;
+            BigInteger Ys = mPublicKey.Y;
+
+            TlsDHUtilities.WriteDHParameter(dhParameters.P, output);
+            TlsDHUtilities.WriteDHParameter(dhParameters.G, output);
+            TlsDHUtilities.WriteDHParameter(Ys, output);
+        }
+
+        /**
+         * Parse a {@link ServerDHParams} from a {@link Stream}.
+         * 
+         * @param input
+         *            the {@link Stream} to parse from.
+         * @return a {@link ServerDHParams} object.
+         * @throws IOException
+         */
+        public static ServerDHParams Parse(Stream input)
+        {
+            BigInteger p = TlsDHUtilities.ReadDHParameter(input);
+            BigInteger g = TlsDHUtilities.ReadDHParameter(input);
+            BigInteger Ys = TlsDHUtilities.ReadDHParameter(input);
+
+            return new ServerDHParams(
+                TlsDHUtilities.ValidateDHPublicKey(new DHPublicKeyParameters(Ys, new DHParameters(p, g))));
+        }
+    }
+}
+
+#endif