public void decryptMessage()
{
string message = "0123456789ABCDEF";
BitArray excepted_message;
string excepted_message_string = "00000001 00100011 01000101 01100111 10001001 10101011 11001101 11101111";
excepted_message = this.fromStringToBitArray(excepted_message_string);
Key key = new Key("133457799BBCDFF1");
key.initialPermutation();
key.splitting();
key.shifts();
key.finalPermutation();
Message test_message = new Message(message, 0);
test_message.initialPermutation();
test_message.splitting();
Iteration.setKeys(key.keys);
Iteration iteration = new Iteration(test_message.msg_left_side, test_message.msg_right_side);
for (int i = 1; i <= 16; i++)
{
iteration.ePermutation(i);
iteration.xorWithKey(i);
iteration.sBoxing(i);
iteration.pPermutation(i);
iteration.afterIteration(i);
}
test_message.reverseConnecting(iteration.leftSide[16], iteration.rightSide[16]);
test_message.finalPermutation();
test_message = new Message(test_message.bitMsg);
test_message.initialPermutation();
test_message.splitting();
key.reverseKey();
Iteration.setKeys(key.keys);
iteration = new Iteration(test_message.msg_left_side, test_message.msg_right_side);
for (int i = 1; i <= 16; i++)
{
iteration.ePermutation(i);
iteration.xorWithKey(i);
iteration.sBoxing(i);
iteration.pPermutation(i);
iteration.afterIteration(i);
}
test_message.reverseConnecting(iteration.leftSide[16], iteration.rightSide[16]);
test_message.finalPermutation();
CollectionAssert.AreEqual(excepted_message, test_message.bitMsg, "Excepted:\n" + this.bitArrayToString(excepted_message) + " Actual\n" + this.bitArrayToString(test_message.bitMsg));
}
public static BitArray makeMessage(byte[] bit_message)
{
Message message = new Message(bit_message);
message.initialPermutation();
message.splitting();
Iteration iteration = new Iteration(message.msg_left_side, message.msg_right_side);
Iteration.setKeys(Utils.key.keys);
for (int i = 1; i <= 16; i++)
{
Utils.oneIteration(iteration, i);
}
message.reverseConnecting(iteration.leftSide[16], iteration.rightSide[16]);
message.finalPermutation();
return message.bitMsg;
}