System.Security.Cryptography.RSACryptoServiceProvider.Encrypt C# (CSharp) Method

        public override byte[] Encrypt(byte[] data, RSAEncryptionPadding padding)
        {
            if (data == null)
                throw new ArgumentNullException(nameof(data));
            if (padding == null)
                throw new ArgumentNullException(nameof(padding));

            if (padding == RSAEncryptionPadding.Pkcs1)
            {
                return Encrypt(data, fOAEP: false);
            }
            else if (padding == RSAEncryptionPadding.OaepSHA1)
            {
                return Encrypt(data, fOAEP: true);
            }
            else
            {
                throw PaddingModeNotSupported();
            }
        }

        public static void EncryptionKeyRequest(MinecraftClient client, IPacket _packet)
        {
            var packet = (EncryptionKeyRequestPacket)_packet;
            var random = RandomNumberGenerator.Create();
            client.SharedSecret = new byte[16];
            random.GetBytes(client.SharedSecret); // Generate a secure AES key

            if (packet.ServerId != "-") // Online mode
            {
                // Authenticate with minecraft.net
                var data = Encoding.ASCII.GetBytes(packet.ServerId)
                    .Concat(client.SharedSecret)
                    .Concat(packet.PublicKey).ToArray();
                var hash = Cryptography.JavaHexDigest(data);
                var webClient = new WebClient();
                string result = webClient.DownloadString("http://session.minecraft.net/game/joinserver.jsp?user="******"&sessionId=" + Uri.EscapeUriString(client.Session.SessionId) +
                    "&serverId=" + Uri.EscapeUriString(hash));
                if (result != "OK")
                    LogProvider.Log("Unable to verify session: " + result);
            }

            var parser = new AsnKeyParser(packet.PublicKey);
            var key = parser.ParseRSAPublicKey();

            // Encrypt shared secret and verification token
            var crypto = new RSACryptoServiceProvider();
            crypto.ImportParameters(key);
            var encryptedSharedSecret = crypto.Encrypt(client.SharedSecret, false);
            var encryptedVerification = crypto.Encrypt(packet.VerificationToken, false);
            var response = new EncryptionKeyResponsePacket(encryptedSharedSecret, encryptedVerification);
            client.SendPacket(response);
        }