private void detext_Click(object sender, EventArgs e)
{
if (name.SelectedItem.ToString() == "RSA")
{
Key.Text = skey[1];
Plaintext.Text = RSAcipher.DecryptString(Cyphertext.Text, skey[1]);
}
if (Cyphertext.Text.Trim() != string.Empty)
{
if (Key.Text.Trim() != string.Empty)
{
if (name.SelectedItem.ToString() == "Caesar cipher")
{
int k = Convert.ToInt32(this.Key.Text);
Plaintext.Text = Caecar.Caecarcipher.DeCaesar(Cyphertext.Text, k);
}
else if (name.SelectedItem.ToString() == "DES")
{
Plaintext.Text = DEScipher.Decrypt(Cyphertext.Text, Key.Text);
}
else if (name.SelectedItem.ToString() == "Permutation cipher")
{
if (order.Text.ToString() != string.Empty)
{
Plaintext.Text = permutation.permutationcipher.decrypt(Cyphertext.Text, order.Text, Convert.ToInt32(Key.Text));
}
else
{
MessageBox.Show(this, "请输入密钥顺序！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
else if (name.SelectedItem.ToString() == "AutoKey cipher")
{
Plaintext.Text = Autokeycipher.decryption(Cyphertext.Text, Key.Text);
}
else if (name.SelectedItem.ToString() == "Keyword cipher")
{
Plaintext.Text = Keywordcipher.decrypt(Cyphertext.Text, Key.Text);
}
else if (name.SelectedItem.ToString() == "Vigenere cipher")
{
Plaintext.Text = Vigenere.Vigenere.decrypt(Cyphertext.Text, Key.Text);
}
else if (name.SelectedItem.ToString() == "Playfair cipher")
{
Plaintext.Text = playfair.Program.Decrypt(Cyphertext.Text, Key.Text);
}
else if (name.SelectedItem.ToString() == "CA")
{
if (order.Text.ToString() != string.Empty)
{
Plaintext.Text = CA.CA.decrypt(Cyphertext.Text, order.Text, Convert.ToInt32(Key.Text));
}
else
{
MessageBox.Show(this, "请输入二进制密钥流！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
else if (name.SelectedItem.ToString() == "Column cipher")
{
Plaintext.Text = Column.Column.decrypt(Cyphertext.Text, Key.Text);
}
}
else
{
MessageBox.Show(this, "请输入密钥！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
else
{
MessageBox.Show(this, "请输入要解密的文本！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
