private void BTSend_Click(object sender, EventArgs e)
{
byte[] sendBytes = Encoding.UTF8.GetBytes(tBmsg.Text.Trim());
if (tCPClient.SendData(TCPClient.Md5pwd, sendBytes))
{
rTBMSG.Text += "已发送>>" + tBmsg.Text.Trim() + "\n";
tBmsg.Text = "";
}
}
private void Button_Send_Click(object sender, EventArgs e)
{
try
{
string wholemessage = "(" + DateTime.Now.Hour + ":" + DateTime.Now.Minute + ":" + DateTime.Now.Second + ") " + myname + " - " + this.TextBox_Send.Text;
string mymessage = "(" + DateTime.Now.Hour + ":" + DateTime.Now.Minute + ":" + DateTime.Now.Second + ") " + "You - " + this.TextBox_Send.Text;
if (flag1 == 1)
{
byte[] Key1 = Encoding.UTF8.GetBytes(this.TextBox_Key.Text);
int dem = 0;
for (int i = 0; i < 32; i++)
{
if (dem < Key1.Length)
{
Key[i] = Key1[dem++];
}
if (dem == Key1.Length)
{
dem = 0;
}
}
using (Aes aes = Aes.Create())
{
byte[] IV = aes.IV;
encrypted = Encrypt_String_Aes(wholemessage, Key, aes.IV);
//string cipherText = Encoding.UTF8.GetString(encrypted);
string plaintext = Decrypt_String_AES(encrypted, Key, IV);
int count1 = 0;
int count2 = 0;
int length = IV.Length + encrypted.Length;
byte[] byte_length = ConvertInt32ToByteArray(length);
byte[] byteSend = new byte[IV.Length + encrypted.Length + byte_length.Length];
for (int i = 0; i < IV.Length + encrypted.Length + byte_length.Length; i++)
{
if (i < byte_length.Length)
{
byteSend[i] = byte_length[i];
}
else if (i < byte_length.Length + IV.Length)
{
byteSend[i] = IV[count1++];
}
else
{
byteSend[i] = encrypted[count2++];
}
}
tcpclient.SendData(byteSend);
}
}
Listbox_Chat.Items.Add(mymessage);
this.TextBox_Send.Clear();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Runtime Exception", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
