public static void ShowAnswers()
{
uint[] key = new uint[3] {
105, 101, 116
};
uint[,] cipher = new uint[, ] {
{ 242, 40 }, { 164, 218 }, { 78, 28 }, { 223, 231 }, { 255, 93 }, { 253, 116 }, { 78, 222 }, { 148, 111 }
};
Console.WriteLine("TEA decryption:");
TEA.Decrypt(cipher, key);
uint[,] cipher2 = new uint[, ] {
{ 115, 22 }, { 224, 181 }, { 208, 211 }, { 182, 246 }, { 130, 70 }, { 36, 109 }, { 101, 163 }, { 31, 135 }, { 234, 72 }, { 138, 78 }, { 93, 79 }, { 174, 192 }
};
Tuple <uint, uint> IV2 = new Tuple <uint, uint>('t', 'u');
Console.WriteLine("TEA CBC decryption:");
TEA.DecryptCBC(cipher2, key, IV2);
uint[,] cipher3 = new uint[, ] {
{ 28, 57 }, { 248, 222 }, { 92, 143 }, { 216, 205 }, { 150, 89 }, { 17, 92 }, { 119, 176 }, { 210, 27 }, { 54, 248 }, { 143, 84 }, { 180, 238 }, { 9, 21 }
};
Tuple <uint, uint> IV3 = new Tuple <uint, uint>('p', 'l');
Console.WriteLine("TEA OFB decryption:");
TEA.DecryptOFB(cipher3, key, IV3);
// Check whether encryption model is working correctly and you actually can encrypt and decrypt same message/cipher.
//TEA.Encrypt(new uint[,] { { 'l', 'i' }, { 'e', 't' }, { 'i', 'n' }, { 'g', 'a' }, { 's', ' ' }, { ' ', 'o' }, { 'r', 'a' }, { 's', 'x' } }, key);
}
private void button2_Click(object sender, EventArgs e)
{
if (textBox3.TextLength == 0)
{
richTextBox1.Text = richTextBox1.Text + "System:" + "Ciphertext was null\n";
}
else if (textBox1.TextLength == 0)
{
richTextBox1.Text = richTextBox1.Text + "System:" + "Key was null\n";
}
else
{
TEA tea = new TEA();
plaintext = tea.Decrypt(textBox3.Text, textBox1.Text);
textBox2.Text = plaintext;
richTextBox1.Text = richTextBox1.Text + "System:" + "Ciphertext has been decrypted\n";
};
}