public static string Decrypt(string Data, byte[] Key, byte[] IV)
{
try
{
MemoryStream msDecrypt = new MemoryStream(Convert.FromBase64String(Data));
// Create a CryptoStream using the MemoryStream
// and the passed key and initialization vector (IV).
CryptoStream csDecrypt = new CryptoStream(msDecrypt,
new TripleDESCryptoServiceProvider().CreateDecryptor(Key, IV),
CryptoStreamMode.Read);
// Create buffer to hold the decrypted data.
byte[] fromEncrypt = new byte[Data.Length];
// Read the decrypted data out of the crypto stream
// and place it into the temporary buffer.
csDecrypt.Read(fromEncrypt, 0, fromEncrypt.Length);
//Convert the buffer into a string and return it.
string ReturnValue = new ASCIIEncoding().GetString(fromEncrypt);
if (ReturnValue.Contains("\0\0\0"))
{
ReturnValue = ReturnValue.Remove(ReturnValue.IndexOf("\0\0\0"));
}
return(ReturnValue);
}
catch (CryptographicException e)
{
Console.WriteLine("A Cryptographic error occurred: {0}", e.Message);
return(null);
}
}
void s_DataReceived(object sender, SerialDataReceivedEventArgs e) //数据接收事件，
{
//Thread.Sleep(200); //等待100毫秒
int count = serialPart.BytesToRead;
byte[] buff = new byte[count];
string respond_str = null;
serialPart.Read(buff, 0, count);
//1.缓存数据
if (send_state == 3)//导出记录
{
//this.AddData(Encoding.Default.GetBytes("."));//输出数据
save_timer.Stop();
record_buffer.AddRange(buff);
save_timer.Start();
}
else
{
buffer.AddRange(buff);
}
if (buffer.Count > 0) //至少包含帧头（2字节）、长度（1字节）、校验位（1字节）；根据设计不同而不同
{
byte[] ReceiveBytes = new byte[buffer.Count];
//得到完整的数据，复制到ReceiveBytes中进行校验
buffer.CopyTo(0, ReceiveBytes, 0, buffer.Count);
respond_str = new ASCIIEncoding().GetString(ReceiveBytes);
if (respond_str == "\b")
{
return;
}
if (send_state == 0)
{
if (respond_str.Length > 0)
{
respond_str = respond_str.Remove(respond_str.Length - 1);
}
if (respond_str == "\b \b\b:")
{
}
else
{
if (respond_str == "\b \b\b")
{
respond_str = richTextBox1.Text.Remove(richTextBox1.Text.Length - 1);
richTextBox1.Clear();
richTextBox1.AppendText(respond_str);
}
else
{
this.AddData(ReceiveBytes);//输出数据
}
if (respond_str == "The app was not valid!!!\r")
{
//respond_str = " ";
download_process();
}
if (respond_str == "write iap_code_buf to nand flash block 10 page 0 nand addr 0 completed\r\n\r\nNick-Cmd")
{
send_str("reset\r");
}
buffer.RemoveRange(0, buffer.Count);
}
}
else if (send_state == 1)//发送代码状态
{
if (respond_str == "OK\r\n")
{
buffer.RemoveRange(0, buffer.Count);
Interlocked.Exchange(ref respond_msg, 0xA001);
}
else if (respond_str == "write start\r\n\r\nNick-Cmd:")/////执行其他代码，对数据进行处理。
{
buffer.RemoveRange(0, buffer.Count);
Interlocked.Exchange(ref respond_msg, 0xA001);
}
else if (respond_str == "ERROR\r\n")/////执行其他代码，对数据进行处理。
{
buffer.RemoveRange(0, buffer.Count);
Interlocked.Exchange(ref respond_msg, 0xE001);
}
}
else
{
if (respond_str.Length > 1)
{
if ((respond_str[respond_str.Length - 2] == '\r') && (respond_str[respond_str.Length - 1] == '\n'))
{
coinOp.CoinOP_SetText(respond_str);
buffer.RemoveRange(0, buffer.Count);
}
}
}
}
}