private void Button4_Click(object sender, EventArgs e)
{
SM4Utils sm4 = new SM4Utils();
//sm4.secretKey = "JeF8U9wHFOMfs2Y8";
sm4.secretKey = textBox1.Text;
sm4.hexString = false;
byte[] bytedata;
bytedata = Encoding.Default.GetBytes(textBox3.Text);
string plain_data = sm4.Decrypt_ECB(Encoding.Default.GetString(bytedata));
byte[] plain_bytedata = Encoding.Default.GetBytes(plain_data);
//MessageBox.Show(plain_data, "解密结果");
textBox4.Text = plain_data;
}
private void Button3_Click(object sender, EventArgs e)
{
SM4Utils sm4 = new SM4Utils();
//sm4.secretKey = "JeF8U9wHFOMfs2Y8";
sm4.secretKey = textBox1.Text;
sm4.hexString = false;
byte[] bytedata;
bytedata = Encoding.Default.GetBytes(@"laner");
string cipher_data = sm4.Encrypt_ECB(Encoding.Default.GetString(bytedata));
byte[] cipher_bytedata = Encoding.Default.GetBytes(cipher_data);
//string code = cipher_data;
// MessageBox.Show(cipher_data,"密文");
textBox3.Text = cipher_data;
}
private void Button2_Click(object sender, EventArgs e)
{
SM4Utils sm4 = new SM4Utils();
//sm4.secretKey = "JeF8U9wHFOMfs2Y8";
sm4.secretKey = textBox1.Text;
sm4.hexString = false;
byte[] bytedata = Encoding.Default.GetBytes(textBox3.Text);
byte[] temp_iv = new byte[16];
byte[] file_bytedata = new byte[bytedata.Length - 16];
Array.Copy(bytedata, temp_iv, 16);
sm4.iv = Encoding.Default.GetString(temp_iv);
Array.Copy(bytedata, 16, file_bytedata, 0, (bytedata.Length - 16));
string plain_data = sm4.Decrypt_CBC(Encoding.Default.GetString(file_bytedata));
// MessageBox.Show(plain_data, "解密结果");
textBox4.Text = plain_data;
}
private void Button1_Click(object sender, EventArgs e)
{
SM4Utils sm4 = new SM4Utils();
//sm4.secretKey = "JeF8U9wHFOMfs2Y8";
sm4.secretKey = textBox1.Text;
sm4.hexString = false;
tempiv = GetRandomString(16, true, true, true, false, null).ToLower();
sm4.iv = tempiv;
byte[] bytedata;
bytedata = Encoding.Default.GetBytes(textBox2.Text);
string cipher_data = sm4.Encrypt_CBC(Encoding.Default.GetString(bytedata));
string cipher_data_iv = sm4.iv + cipher_data;
byte[] cipher_bytedata = Encoding.Default.GetBytes(cipher_data);
byte[] cipher_bytedata_iv = Encoding.Default.GetBytes(cipher_data_iv);
string code = Encoding.Default.GetString(cipher_bytedata_iv);
textBox3.Text = code;
// MessageBox.Show(Encoding.Default.GetString(cipher_bytedata_iv));
}
