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Assets/BestHTTP/SecureProtocol/crypto/generators/DHBasicKeyPairGenerator.cs

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+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+
+using System;
+
+using Org.BouncyCastle.Crypto.Parameters;
+using Org.BouncyCastle.Math;
+
+namespace Org.BouncyCastle.Crypto.Generators
+{
+    /**
+     * a basic Diffie-Hellman key pair generator.
+     *
+     * This generates keys consistent for use with the basic algorithm for
+     * Diffie-Hellman.
+     */
+    public class DHBasicKeyPairGenerator
+		: IAsymmetricCipherKeyPairGenerator
+    {
+        private DHKeyGenerationParameters param;
+
+        public virtual void Init(
+			KeyGenerationParameters parameters)
+        {
+            this.param = (DHKeyGenerationParameters)parameters;
+        }
+
+        public virtual AsymmetricCipherKeyPair GenerateKeyPair()
+        {
+			DHKeyGeneratorHelper helper = DHKeyGeneratorHelper.Instance;
+			DHParameters dhp = param.Parameters;
+
+			BigInteger x = helper.CalculatePrivate(dhp, param.Random);
+			BigInteger y = helper.CalculatePublic(dhp, x);
+
+			return new AsymmetricCipherKeyPair(
+                new DHPublicKeyParameters(y, dhp),
+                new DHPrivateKeyParameters(x, dhp));
+        }
+    }
+}
+
+#endif