Renci.SshNet.ServiceFactory.CreateKeyExchange C# (CSharp) Method

        public IKeyExchange CreateKeyExchange(IDictionary<string, Type> clientAlgorithms, string[] serverAlgorithms)
        {
            if (clientAlgorithms == null)
                throw new ArgumentNullException("clientAlgorithms");
            if (serverAlgorithms == null)
                throw new ArgumentNullException("serverAlgorithms");

            // find an algorithm that is supported by both client and server
            var keyExchangeAlgorithmType = (from c in clientAlgorithms
                                            from s in serverAlgorithms
                                            where s == c.Key
                                            select c.Value).FirstOrDefault();

            if (keyExchangeAlgorithmType == null)
            {
                throw new SshConnectionException("Failed to negotiate key exchange algorithm.", DisconnectReason.KeyExchangeFailed);
            }

            return keyExchangeAlgorithmType.CreateInstance<IKeyExchange>();
        }
    }