public void SetText(string str, int[] cipher)
{
StringBuilder s = new StringBuilder();
byte[] buf = new byte[2];
strB.Append("\n");
strB.Append(str);
for (int i = 0; i < cipher.Length; i++)
{
s = SubBytes.GetStr(cipher[i]);
buf[0] = Convert.ToByte(s.ToString(0, 4), 2);
buf[1] = Convert.ToByte(s.ToString(4, 4), 2);
strB.Append(alphabet[buf[0]] + "" + alphabet[buf[1]]);
}
strB.Append("\r\n");
}
public void SetText(int[,] keyExpansion)
{
StringBuilder s = new StringBuilder(8);
byte[] buf = new byte[2];
for (int i = 0; i < keyExpansion.GetLength(0); i++)
{
for (int j = 0; j < keyExpansion.GetLength(1); j++)
{
s = SubBytes.GetStr(keyExpansion[i, j]);
buf[0] = Convert.ToByte(s.ToString(0, 4), 2);
buf[1] = Convert.ToByte(s.ToString(4, 4), 2);
str.Append(alphabet[buf[0]] + "" + alphabet[buf[1]]);
}
str.Append("\n");
}
}
private void EncryptionBtn_Click_1(object sender, EventArgs e)
{
if (radioBtn1.Checked == true)
{
if (Encoding.Default.GetBytes(KeyText.Text).Length != 16)
{
MessageBox.Show("ERROR!密钥个数必须为16个字符或8个汉字！", "ERROR", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
if (radioBtn2.Checked == true)
{
if (Encoding.Default.GetBytes(KeyText.Text).Length != 24)
{
MessageBox.Show("ERROR!密钥个数必须为24个字符或12个汉字！", "ERROR", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
if (radioBtn3.Checked == true)
{
if (Encoding.Default.GetBytes(KeyText.Text).Length != 32)
{
MessageBox.Show("ERROR!密钥个数必须为32个字符或16个汉字！", "ERROR", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
else
{
if (KeyText.Text.Length == 0)
{
MessageBox.Show("请输入密钥！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (PlainText.Text.Length == 0 && KeyText.Text.Length != 0)
{
MessageBox.Show("请输入明文！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
sw4.Start();
int[,] key = KeyExpansion.GetKeyExpansion(KeyText.Text.ToString().Trim());
int[,] cipher = Encryption.Getencryption(PlainText.Text.ToString(), key);
StringBuilder strB = new StringBuilder();
for (int i = 0; i < cipher.GetLength(0); i++)
{
for (int j = 0; j < 16; j++)
{
StringBuilder s = new StringBuilder();
byte[] buf = new byte[2];
s = SubBytes.GetStr(cipher[i, j]);
buf[0] = Convert.ToByte(s.ToString(0, 4), 2);
buf[1] = Convert.ToByte(s.ToString(4, 4), 2);
strB.Append(alphabet[buf[0]] + "" + alphabet[buf[1]]);
}
}
CipherText.Text = strB.ToString();
sw4.Stop();
}
TimeSpan ts3 = sw4.Elapsed;
label2.Text = ts3.ToString();
//MessageBox.Show("解密用时" + ts3, "计时结果");
}