public void RunTask(object state, RunTaskDelegate task, TaskCompletedDelegate onTaskCompleted)
{
object result = task(state);
onTaskCompleted(result);
}
private void button1_Click(object sender, EventArgs e)
{
RunTaskDelegate runTask = new RunTaskDelegate(RunTask);
if (textBox1.Text == "")
{
MessageBox.Show("请选择要操作的文件", "错误", MessageBoxButtons.OK);
}
else
{
if ((radioButton1.Checked == false) && (radioButton2.Checked == false) && (radioButton3.Checked == false) && (radioButton4.Checked == false) && (radioButton5.Checked == false))
{
MessageBox.Show("请选择加解密模式", "错误", MessageBoxButtons.OK);
}
else
{
if (radioButton1.Checked == true)
{
if (textBox2.Text.Length < 16)
{
MessageBox.Show("请输入16位密码", "错误", MessageBoxButtons.OK);
}
else
{
uint count = 0;
uint[] roundKey = new uint[36];
byte[] baseKey = new byte[16];
byte[] plainBlock = new byte[16];
byte[] cipherBlock = new byte[16];
long len;
long lenth;
start = DateTime.Now.Ticks;
baseKey = Encoding.UTF8.GetBytes(textBox2.Text);
KeyGenerate(baseKey, roundKey);
string fileNamer = textBox1.Text;
FileStream fr = new FileStream(fileNamer, FileMode.Open);
string fileNamew = doc + "temp.xxx";
if (File.Exists(fileNamew))
{
File.Delete(fileNamew); FileStream sw = File.Create(fileNamew); sw.Close();
}
if (!File.Exists(fileNamew))
{
FileStream sw = File.Create(fileNamew); sw.Close();
}
FileStream fw = new FileStream(fileNamew, FileMode.Open);
lenth = fr.Length;
len = 0;
while (true)
{
fr.Read(cipherBlock, 0, 16);
SMS4_DncryptBlock(cipherBlock, roundKey, plainBlock);
len += 16;
if ((len % 160000) == 0)
{
runTask(len, lenth);
}
if (len < lenth)
{
fw.Write(plainBlock, 0, 16);
}
else
{
break;
}
}
if (plainBlock[15] < (byte)16)
{
for (count = (uint)(16 - plainBlock[15]); count < 15; count++)
{
if (plainBlock[count] != '\0')
{
break;
}
}
}
if (count == 15)
{
fw.Write(plainBlock, 0, 16 - plainBlock[15]);
}
else
{
fw.Write(plainBlock, 0, 16);
}
fr.Close();
fw.Close();
File.Delete(textBox1.Text);
File.Move(doc + "temp.xxx", textBox1.Text);
end = DateTime.Now.Ticks;
MessageBox.Show("文件" + name + "已经解密完毕!" + "\n" + "文件大小: " + (lenth / 1024 / 1024).ToString() + "MB " + ((lenth / 1024) % 1024).ToString() + "KB" + "\n" + "用时: " + ((end - start) / 10000000).ToString() + "秒 " + ((end - start) / 10000).ToString() + "毫秒", "加密完成", MessageBoxButtons.OK);
}
}
}
}
}
private void button3_Click(object sender, EventArgs e)
{
RunTaskDelegate runTask = new RunTaskDelegate(RunTask);
if (textBox1.Text == "")
{
MessageBox.Show("请选择要操作的文件", "错误", MessageBoxButtons.OK);
}
else
{
if ((radioButton1.Checked == false) && (radioButton2.Checked == false) && (radioButton3.Checked == false) && (radioButton4.Checked == false) && (radioButton5.Checked == false))
{
MessageBox.Show("请选择加解密模式", "错误", MessageBoxButtons.OK);
}
else
{
if (radioButton1.Checked == true)
{
if (textBox2.Text.Length < 16)
{
MessageBox.Show("请输入16位密码", "错误", MessageBoxButtons.OK);
}
else
{
start = DateTime.Now.Ticks;
uint count;
uint[] roundKey = new uint[36];
byte[] baseKey = new byte[16];
byte[] plainBlock = new byte[16];
byte[] cipherBlock = new byte[16];
long lenth;
long sum = 0;
baseKey = Encoding.UTF8.GetBytes(textBox2.Text);
KeyGenerate(baseKey, roundKey);
string fileNamer = textBox1.Text;
FileStream fr = new FileStream(fileNamer, FileMode.Open);
lenth = fr.Length;
string fileNamew = doc + "temp.xxx";
if (File.Exists(fileNamew))
{
File.Delete(fileNamew); FileStream sw = File.Create(fileNamew); sw.Close();
}
if (!File.Exists(fileNamew))
{
FileStream sw = File.Create(fileNamew); sw.Close();
}
FileStream fw = new FileStream(fileNamew, FileMode.Open);
while (true)
{
if ((count = (uint)fr.Read(plainBlock, 0, 16)) == 16)
{
SMS4_EncryptBlock(plainBlock, roundKey, cipherBlock);
fw.Write(cipherBlock, 0, 16);
sum += 16;
if ((sum % 160000) == 0)
{
runTask(sum, lenth);
}
}
else
{
if (count == 0)
{
break;
}
Fill(plainBlock, '\0', count);
plainBlock[15] = (byte)(16 - count);
SMS4_EncryptBlock(plainBlock, roundKey, cipherBlock);
fw.Write(cipherBlock, 0, 16);
break;
}
}
fr.Close();
fw.Close();
File.Delete(textBox1.Text);
File.Move(doc + "temp.xxx", textBox1.Text);
end = DateTime.Now.Ticks;
MessageBox.Show("文件" + name + "已经加密完毕!" + "\n" + "文件大小: " + (lenth / 1024 / 1024).ToString() + "MB " + ((lenth / 1024) % 1024).ToString() + "KB" + "\n" + "用时: " + ((end - start) / 10000000).ToString() + "秒 " + ((end - start) / 10000).ToString() + "毫秒", "加密完成", MessageBoxButtons.OK);
progressBar1.Maximum = 100;
progressBar1.Value = 0;
}
}
}
}
}
public void RunTask(object state, RunTaskDelegate task, TaskCompletedDelegate onTaskCompleted)
{
_task = task;
_onTaskCompleted = onTaskCompleted;
_testRunner.RunWorkerAsync(state);
}
