Support diffie-hellman-group14-sha256 and diffie-hellman-group16-sha512 key exchange methods.

README.md

@@ -53,6 +53,8 @@ This project was inspired by **Sharp.SSH** library which was ported from java an
 * ecdh-sha2-nistp521
 * diffie-hellman-group-exchange-sha256
 * diffie-hellman-group-exchange-sha1
+* diffie-hellman-group16-sha512
+* diffie-hellman-group14-sha256
 * diffie-hellman-group14-sha1
 * diffie-hellman-group1-sha1
 

src/Renci.SshNet.Tests/Classes/Security/KeyExchangeDiffieHellmanGroup14Sha256Test.cs

@@ -0,0 +1,61 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Renci.SshNet.Common;
+using Renci.SshNet.Security;
+using Renci.SshNet.Tests.Common;
+using System.Text;
+
+namespace Renci.SshNet.Tests.Classes.Security
+{
+    [TestClass]
+    public class KeyExchangeDiffieHellmanGroup14Sha256Test : TestBase
+    {
+        private static readonly byte[] SecondOkleyGroup =
+            {
+                0x00,
+                0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc9, 0x0f, 0xda, 0xa2,
+                0x21, 0x68, 0xc2, 0x34, 0xc4, 0xc6, 0x62, 0x8b, 0x80, 0xdc, 0x1c, 0xd1,
+                0x29, 0x02, 0x4e, 0x08, 0x8a, 0x67, 0xcc, 0x74, 0x02, 0x0b, 0xbe, 0xa6,
+                0x3b, 0x13, 0x9b, 0x22, 0x51, 0x4a, 0x08, 0x79, 0x8e, 0x34, 0x04, 0xdd,
+                0xef, 0x95, 0x19, 0xb3, 0xcd, 0x3a, 0x43, 0x1b, 0x30, 0x2b, 0x0a, 0x6d,
+                0xf2, 0x5f, 0x14, 0x37, 0x4f, 0xe1, 0x35, 0x6d, 0x6d, 0x51, 0xc2, 0x45,
+                0xe4, 0x85, 0xb5, 0x76, 0x62, 0x5e, 0x7e, 0xc6, 0xf4, 0x4c, 0x42, 0xe9,
+                0xa6, 0x37, 0xed, 0x6b, 0x0b, 0xff, 0x5c, 0xb6, 0xf4, 0x06, 0xb7, 0xed,
+                0xee, 0x38, 0x6b, 0xfb, 0x5a, 0x89, 0x9f, 0xa5, 0xae, 0x9f, 0x24, 0x11,
+                0x7c, 0x4b, 0x1f, 0xe6, 0x49, 0x28, 0x66, 0x51, 0xec, 0xe4, 0x5b, 0x3d,
+                0xc2, 0x00, 0x7c, 0xb8, 0xa1, 0x63, 0xbf, 0x05, 0x98, 0xda, 0x48, 0x36,
+                0x1c, 0x55, 0xd3, 0x9a, 0x69, 0x16, 0x3f, 0xa8, 0xfd, 0x24, 0xcf, 0x5f,
+                0x83, 0x65, 0x5d, 0x23, 0xdc, 0xa3, 0xad, 0x96, 0x1c, 0x62, 0xf3, 0x56,
+                0x20, 0x85, 0x52, 0xbb, 0x9e, 0xd5, 0x29, 0x07, 0x70, 0x96, 0x96, 0x6d,
+                0x67, 0x0c, 0x35, 0x4e, 0x4a, 0xbc, 0x98, 0x04, 0xf1, 0x74, 0x6c, 0x08,
+                0xca, 0x18, 0x21, 0x7c, 0x32, 0x90, 0x5e, 0x46, 0x2e, 0x36, 0xce, 0x3b,
+                0xe3, 0x9e, 0x77, 0x2c, 0x18, 0x0e, 0x86, 0x03, 0x9b, 0x27, 0x83, 0xa2,
+                0xec, 0x07, 0xa2, 0x8f, 0xb5, 0xc5, 0x5d, 0xf0, 0x6f, 0x4c, 0x52, 0xc9,
+                0xde, 0x2b, 0xcb, 0xf6, 0x95, 0x58, 0x17, 0x18, 0x39, 0x95, 0x49, 0x7c,
+                0xea, 0x95, 0x6a, 0xe5, 0x15, 0xd2, 0x26, 0x18, 0x98, 0xfa, 0x05, 0x10,
+                0x15, 0x72, 0x8e, 0x5a, 0x8a, 0xac, 0xaa, 0x68, 0xff, 0xff, 0xff, 0xff,
+                0xff, 0xff, 0xff, 0xff
+            };
+
+        private KeyExchangeDiffieHellmanGroup14Sha256 _group14;
+
+        protected override void OnInit()
+        {
+            base.OnInit();
+
+            _group14 = new KeyExchangeDiffieHellmanGroup14Sha256();
+        }
+
+        [TestMethod]
+        public void GroupPrimeShouldBeSecondOakleyGroup()
+        {
+            var bytes = _group14.GroupPrime.ToByteArray().Reverse();
+            Assert.IsTrue(SecondOkleyGroup.IsEqualTo(bytes));
+        }
+
+        [TestMethod]
+        public void NameShouldBeDiffieHellmanGroup14Sha256()
+        {
+            Assert.AreEqual("diffie-hellman-group14-sha256", _group14.Name);
+        }
+    }
+}

src/Renci.SshNet.Tests/Classes/Security/KeyExchangeDiffieHellmanGroup16Sha512Test.cs

@@ -0,0 +1,70 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Renci.SshNet.Common;
+using Renci.SshNet.Security;
+using Renci.SshNet.Tests.Common;
+
+namespace Renci.SshNet.Tests.Classes.Security
+{
+    [TestClass]
+    public class KeyExchangeDiffieHellmanGroup16Sha512Test : TestBase
+    {
+        private static readonly byte[] MoreModularExponentialGroup16 =
+            {
+                0x00,
+                0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xc9,0x0f,0xda,0xa2,0x21,0x68,0xc2,0x34,
+                0xc4,0xc6,0x62,0x8b,0x80,0xdc,0x1c,0xd1,0x29,0x02,0x4e,0x08,0x8a,0x67,0xcc,0x74,
+                0x02,0x0b,0xbe,0xa6,0x3b,0x13,0x9b,0x22,0x51,0x4a,0x08,0x79,0x8e,0x34,0x04,0xdd,
+                0xef,0x95,0x19,0xb3,0xcd,0x3a,0x43,0x1b,0x30,0x2b,0x0a,0x6d,0xf2,0x5f,0x14,0x37,
+                0x4f,0xe1,0x35,0x6d,0x6d,0x51,0xc2,0x45,0xe4,0x85,0xb5,0x76,0x62,0x5e,0x7e,0xc6,
+                0xf4,0x4c,0x42,0xe9,0xa6,0x37,0xed,0x6b,0x0b,0xff,0x5c,0xb6,0xf4,0x06,0xb7,0xed,
+                0xee,0x38,0x6b,0xfb,0x5a,0x89,0x9f,0xa5,0xae,0x9f,0x24,0x11,0x7c,0x4b,0x1f,0xe6,
+                0x49,0x28,0x66,0x51,0xec,0xe4,0x5b,0x3d,0xc2,0x00,0x7c,0xb8,0xa1,0x63,0xbf,0x05,
+                0x98,0xda,0x48,0x36,0x1c,0x55,0xd3,0x9a,0x69,0x16,0x3f,0xa8,0xfd,0x24,0xcf,0x5f,
+                0x83,0x65,0x5d,0x23,0xdc,0xa3,0xad,0x96,0x1c,0x62,0xf3,0x56,0x20,0x85,0x52,0xbb,
+                0x9e,0xd5,0x29,0x07,0x70,0x96,0x96,0x6d,0x67,0x0c,0x35,0x4e,0x4a,0xbc,0x98,0x04,
+                0xf1,0x74,0x6c,0x08,0xca,0x18,0x21,0x7c,0x32,0x90,0x5e,0x46,0x2e,0x36,0xce,0x3b,
+                0xe3,0x9e,0x77,0x2c,0x18,0x0e,0x86,0x03,0x9b,0x27,0x83,0xa2,0xec,0x07,0xa2,0x8f,
+                0xb5,0xc5,0x5d,0xf0,0x6f,0x4c,0x52,0xc9,0xde,0x2b,0xcb,0xf6,0x95,0x58,0x17,0x18,
+                0x39,0x95,0x49,0x7c,0xea,0x95,0x6a,0xe5,0x15,0xd2,0x26,0x18,0x98,0xfa,0x05,0x10,
+                0x15,0x72,0x8e,0x5a,0x8a,0xaa,0xc4,0x2d,0xad,0x33,0x17,0x0d,0x04,0x50,0x7a,0x33,
+                0xa8,0x55,0x21,0xab,0xdf,0x1c,0xba,0x64,0xec,0xfb,0x85,0x04,0x58,0xdb,0xef,0x0a,
+                0x8a,0xea,0x71,0x57,0x5d,0x06,0x0c,0x7d,0xb3,0x97,0x0f,0x85,0xa6,0xe1,0xe4,0xc7,
+                0xab,0xf5,0xae,0x8c,0xdb,0x09,0x33,0xd7,0x1e,0x8c,0x94,0xe0,0x4a,0x25,0x61,0x9d,
+                0xce,0xe3,0xd2,0x26,0x1a,0xd2,0xee,0x6b,0xf1,0x2f,0xfa,0x06,0xd9,0x8a,0x08,0x64,
+                0xd8,0x76,0x02,0x73,0x3e,0xc8,0x6a,0x64,0x52,0x1f,0x2b,0x18,0x17,0x7b,0x20,0x0c,
+                0xbb,0xe1,0x17,0x57,0x7a,0x61,0x5d,0x6c,0x77,0x09,0x88,0xc0,0xba,0xd9,0x46,0xe2,
+                0x08,0xe2,0x4f,0xa0,0x74,0xe5,0xab,0x31,0x43,0xdb,0x5b,0xfc,0xe0,0xfd,0x10,0x8e,
+                0x4b,0x82,0xd1,0x20,0xa9,0x21,0x08,0x01,0x1a,0x72,0x3c,0x12,0xa7,0x87,0xe6,0xd7,
+                0x88,0x71,0x9a,0x10,0xbd,0xba,0x5b,0x26,0x99,0xc3,0x27,0x18,0x6a,0xf4,0xe2,0x3c,
+                0x1a,0x94,0x68,0x34,0xb6,0x15,0x0b,0xda,0x25,0x83,0xe9,0xca,0x2a,0xd4,0x4c,0xe8,
+                0xdb,0xbb,0xc2,0xdb,0x04,0xde,0x8e,0xf9,0x2e,0x8e,0xfc,0x14,0x1f,0xbe,0xca,0xa6,
+                0x28,0x7c,0x59,0x47,0x4e,0x6b,0xc0,0x5d,0x99,0xb2,0x96,0x4f,0xa0,0x90,0xc3,0xa2,
+                0x23,0x3b,0xa1,0x86,0x51,0x5b,0xe7,0xed,0x1f,0x61,0x29,0x70,0xce,0xe2,0xd7,0xaf,
+                0xb8,0x1b,0xdd,0x76,0x21,0x70,0x48,0x1c,0xd0,0x06,0x91,0x27,0xd5,0xb0,0x5a,0xa9,
+                0x93,0xb4,0xea,0x98,0x8d,0x8f,0xdd,0xc1,0x86,0xff,0xb7,0xdc,0x90,0xa6,0xc0,0x8f,
+                0x4d,0xf4,0x35,0xc9,0x34,0x06,0x31,0x99,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff
+            };
+
+        private KeyExchangeDiffieHellmanGroup16Sha512 _group16;
+
+        protected override void OnInit()
+        {
+            base.OnInit();
+
+            _group16 = new KeyExchangeDiffieHellmanGroup16Sha512();
+        }
+
+        [TestMethod]
+        public void GroupPrimeShouldBeMoreModularExponentialGroup16()
+        {
+            var bytes = _group16.GroupPrime.ToByteArray().Reverse();
+            Assert.IsTrue(MoreModularExponentialGroup16.IsEqualTo(bytes));
+        }
+
+        [TestMethod]
+        public void NameShouldBeDiffieHellmanGroup16Sha512()
+        {
+            Assert.AreEqual("diffie-hellman-group16-sha512", _group16.Name);
+        }
+    }
+}

src/Renci.SshNet/ConnectionInfo.cs

@@ -329,6 +329,8 @@ namespace Renci.SshNet
                     {"ecdh-sha2-nistp521", typeof(KeyExchangeECDH521)},
                     {"diffie-hellman-group-exchange-sha256", typeof (KeyExchangeDiffieHellmanGroupExchangeSha256)},
                     {"diffie-hellman-group-exchange-sha1", typeof (KeyExchangeDiffieHellmanGroupExchangeSha1)},
+                    {"diffie-hellman-group16-sha512", typeof(KeyExchangeDiffieHellmanGroup16Sha512)},
+                    {"diffie-hellman-group14-sha256", typeof (KeyExchangeDiffieHellmanGroup14Sha256)},
                     {"diffie-hellman-group14-sha1", typeof (KeyExchangeDiffieHellmanGroup14Sha1)},
                     {"diffie-hellman-group1-sha1", typeof (KeyExchangeDiffieHellmanGroup1Sha1)},
                 };

src/Renci.SshNet/Security/KeyExchangeDiffieHellmanGroup14Sha256.cs

@@ -0,0 +1,62 @@
+using Renci.SshNet.Common;
+
+namespace Renci.SshNet.Security
+{
+    /// <summary>
+    /// Represents "diffie-hellman-group14-sha256" algorithm implementation.
+    /// </summary>
+    internal class KeyExchangeDiffieHellmanGroup14Sha256 : KeyExchangeDiffieHellmanGroupSha256
+    {
+        /// <summary>
+        /// https://tools.ietf.org/html/rfc2409#section-6.2
+        /// </summary>
+        private static readonly byte[] SecondOkleyGroupReversed =
+            {
+                0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x68, 0xaa, 0xac, 0x8a,
+                0x5a, 0x8e, 0x72, 0x15, 0x10, 0x05, 0xfa, 0x98, 0x18, 0x26, 0xd2, 0x15,
+                0xe5, 0x6a, 0x95, 0xea, 0x7c, 0x49, 0x95, 0x39, 0x18, 0x17, 0x58, 0x95,
+                0xf6, 0xcb, 0x2b, 0xde, 0xc9, 0x52, 0x4c, 0x6f, 0xf0, 0x5d, 0xc5, 0xb5,
+                0x8f, 0xa2, 0x07, 0xec, 0xa2, 0x83, 0x27, 0x9b, 0x03, 0x86, 0x0e, 0x18,
+                0x2c, 0x77, 0x9e, 0xe3, 0x3b, 0xce, 0x36, 0x2e, 0x46, 0x5e, 0x90, 0x32,
+                0x7c, 0x21, 0x18, 0xca, 0x08, 0x6c, 0x74, 0xf1, 0x04, 0x98, 0xbc, 0x4a,
+                0x4e, 0x35, 0x0c, 0x67, 0x6d, 0x96, 0x96, 0x70, 0x07, 0x29, 0xd5, 0x9e,
+                0xbb, 0x52, 0x85, 0x20, 0x56, 0xf3, 0x62, 0x1c, 0x96, 0xad, 0xa3, 0xdc,
+                0x23, 0x5d, 0x65, 0x83, 0x5f, 0xcf, 0x24, 0xfd, 0xa8, 0x3f, 0x16, 0x69,
+                0x9a, 0xd3, 0x55, 0x1c, 0x36, 0x48, 0xda, 0x98, 0x05, 0xbf, 0x63, 0xa1,
+                0xb8, 0x7c, 0x00, 0xc2, 0x3d, 0x5b, 0xe4, 0xec, 0x51, 0x66, 0x28, 0x49,
+                0xe6, 0x1f, 0x4b, 0x7c, 0x11, 0x24, 0x9f, 0xae, 0xa5, 0x9f, 0x89, 0x5a,
+                0xfb, 0x6b, 0x38, 0xee, 0xed, 0xb7, 0x06, 0xf4, 0xb6, 0x5c, 0xff, 0x0b,
+                0x6b, 0xed, 0x37, 0xa6, 0xe9, 0x42, 0x4c, 0xf4, 0xc6, 0x7e, 0x5e, 0x62,
+                0x76, 0xb5, 0x85, 0xe4, 0x45, 0xc2, 0x51, 0x6d, 0x6d, 0x35, 0xe1, 0x4f,
+                0x37, 0x14, 0x5f, 0xf2, 0x6d, 0x0a, 0x2b, 0x30, 0x1b, 0x43, 0x3a, 0xcd,
+                0xb3, 0x19, 0x95, 0xef, 0xdd, 0x04, 0x34, 0x8e, 0x79, 0x08, 0x4a, 0x51,
+                0x22, 0x9b, 0x13, 0x3b, 0xa6, 0xbe, 0x0b, 0x02, 0x74, 0xcc, 0x67, 0x8a,
+                0x08, 0x4e, 0x02, 0x29, 0xd1, 0x1c, 0xdc, 0x80, 0x8b, 0x62, 0xc6, 0xc4,
+                0x34, 0xc2, 0x68, 0x21, 0xa2, 0xda, 0x0f, 0xc9, 0xff, 0xff, 0xff, 0xff,
+                0xff, 0xff, 0xff, 0xff,
+                0x00
+            };
+
+        /// <summary>
+        /// Gets algorithm name.
+        /// </summary>
+        public override string Name
+        {
+            get { return "diffie-hellman-group14-sha256"; }
+        }
+
+        /// <summary>
+        /// Gets the group prime.
+        /// </summary>
+        /// <value>
+        /// The group prime.
+        /// </value>
+        public override BigInteger GroupPrime
+        {
+            get
+            {
+                return new BigInteger(SecondOkleyGroupReversed);
+            }
+        }
+    }
+}

src/Renci.SshNet/Security/KeyExchangeDiffieHellmanGroup16Sha512.cs

@@ -0,0 +1,66 @@
+using Renci.SshNet.Common;
+
+namespace Renci.SshNet.Security
+{
+    /// <summary>
+    /// Represents "diffie-hellman-group16-sha512" algorithm implementation.
+    /// </summary>
+    internal class KeyExchangeDiffieHellmanGroup16Sha512 : KeyExchangeDiffieHellmanGroupSha512
+    {
+        /// <summary>
+        /// https://tools.ietf.org/html/rfc3526#section-5
+        /// </summary>
+        private static readonly byte[] MoreModularExponentialGroup16Reversed =
+            {
+                0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x99,0x31,0x06,0x34,0xc9,0x35,0xf4,0x4d,
+                0x8f,0xc0,0xa6,0x90,0xdc,0xb7,0xff,0x86,0xc1,0xdd,0x8f,0x8d,0x98,0xea,0xb4,0x93,
+                0xa9,0x5a,0xb0,0xd5,0x27,0x91,0x06,0xd0,0x1c,0x48,0x70,0x21,0x76,0xdd,0x1b,0xb8,
+                0xaf,0xd7,0xe2,0xce,0x70,0x29,0x61,0x1f,0xed,0xe7,0x5b,0x51,0x86,0xa1,0x3b,0x23,
+                0xa2,0xc3,0x90,0xa0,0x4f,0x96,0xb2,0x99,0x5d,0xc0,0x6b,0x4e,0x47,0x59,0x7c,0x28,
+                0xa6,0xca,0xbe,0x1f,0x14,0xfc,0x8e,0x2e,0xf9,0x8e,0xde,0x04,0xdb,0xc2,0xbb,0xdb,
+                0xe8,0x4c,0xd4,0x2a,0xca,0xe9,0x83,0x25,0xda,0x0b,0x15,0xb6,0x34,0x68,0x94,0x1a,
+                0x3c,0xe2,0xf4,0x6a,0x18,0x27,0xc3,0x99,0x26,0x5b,0xba,0xbd,0x10,0x9a,0x71,0x88,
+                0xd7,0xe6,0x87,0xa7,0x12,0x3c,0x72,0x1a,0x01,0x08,0x21,0xa9,0x20,0xd1,0x82,0x4b,
+                0x8e,0x10,0xfd,0xe0,0xfc,0x5b,0xdb,0x43,0x31,0xab,0xe5,0x74,0xa0,0x4f,0xe2,0x08,
+                0xe2,0x46,0xd9,0xba,0xc0,0x88,0x09,0x77,0x6c,0x5d,0x61,0x7a,0x57,0x17,0xe1,0xbb,
+                0x0c,0x20,0x7b,0x17,0x18,0x2b,0x1f,0x52,0x64,0x6a,0xc8,0x3e,0x73,0x02,0x76,0xd8,
+                0x64,0x08,0x8a,0xd9,0x06,0xfa,0x2f,0xf1,0x6b,0xee,0xd2,0x1a,0x26,0xd2,0xe3,0xce,
+                0x9d,0x61,0x25,0x4a,0xe0,0x94,0x8c,0x1e,0xd7,0x33,0x09,0xdb,0x8c,0xae,0xf5,0xab,
+                0xc7,0xe4,0xe1,0xa6,0x85,0x0f,0x97,0xb3,0x7d,0x0c,0x06,0x5d,0x57,0x71,0xea,0x8a,
+                0x0a,0xef,0xdb,0x58,0x04,0x85,0xfb,0xec,0x64,0xba,0x1c,0xdf,0xab,0x21,0x55,0xa8,
+                0x33,0x7a,0x50,0x04,0x0d,0x17,0x33,0xad,0x2d,0xc4,0xaa,0x8a,0x5a,0x8e,0x72,0x15,
+                0x10,0x05,0xfa,0x98,0x18,0x26,0xd2,0x15,0xe5,0x6a,0x95,0xea,0x7c,0x49,0x95,0x39,
+                0x18,0x17,0x58,0x95,0xf6,0xcb,0x2b,0xde,0xc9,0x52,0x4c,0x6f,0xf0,0x5d,0xc5,0xb5,
+                0x8f,0xa2,0x07,0xec,0xa2,0x83,0x27,0x9b,0x03,0x86,0x0e,0x18,0x2c,0x77,0x9e,0xe3,
+                0x3b,0xce,0x36,0x2e,0x46,0x5e,0x90,0x32,0x7c,0x21,0x18,0xca,0x08,0x6c,0x74,0xf1,
+                0x04,0x98,0xbc,0x4a,0x4e,0x35,0x0c,0x67,0x6d,0x96,0x96,0x70,0x07,0x29,0xd5,0x9e,
+                0xbb,0x52,0x85,0x20,0x56,0xf3,0x62,0x1c,0x96,0xad,0xa3,0xdc,0x23,0x5d,0x65,0x83,
+                0x5f,0xcf,0x24,0xfd,0xa8,0x3f,0x16,0x69,0x9a,0xd3,0x55,0x1c,0x36,0x48,0xda,0x98,
+                0x05,0xbf,0x63,0xa1,0xb8,0x7c,0x00,0xc2,0x3d,0x5b,0xe4,0xec,0x51,0x66,0x28,0x49,
+                0xe6,0x1f,0x4b,0x7c,0x11,0x24,0x9f,0xae,0xa5,0x9f,0x89,0x5a,0xfb,0x6b,0x38,0xee,
+                0xed,0xb7,0x06,0xf4,0xb6,0x5c,0xff,0x0b,0x6b,0xed,0x37,0xa6,0xe9,0x42,0x4c,0xf4,
+                0xc6,0x7e,0x5e,0x62,0x76,0xb5,0x85,0xe4,0x45,0xc2,0x51,0x6d,0x6d,0x35,0xe1,0x4f,
+                0x37,0x14,0x5f,0xf2,0x6d,0x0a,0x2b,0x30,0x1b,0x43,0x3a,0xcd,0xb3,0x19,0x95,0xef,
+                0xdd,0x04,0x34,0x8e,0x79,0x08,0x4a,0x51,0x22,0x9b,0x13,0x3b,0xa6,0xbe,0x0b,0x02,
+                0x74,0xcc,0x67,0x8a,0x08,0x4e,0x02,0x29,0xd1,0x1c,0xdc,0x80,0x8b,0x62,0xc6,0xc4,
+                0x34,0xc2,0x68,0x21,0xa2,0xda,0x0f,0xc9,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
+                0x00
+            };
+
+        public override BigInteger GroupPrime
+        {
+            get
+            {
+                return new BigInteger(MoreModularExponentialGroup16Reversed);
+            }
+        }
+
+        /// <summary>
+        /// Gets algorithm name.
+        /// </summary>
+        public override string Name
+        {
+            get { return "diffie-hellman-group16-sha512"; }
+        }
+    }
+}