CaesarCipher operator*(const CaesarCipher &c1, const CaesarCipher &c2)
{
assert(((c2.key != 0 && c2.ciphertext.compare("") == 0 && c2.plaintext.compare("") == 0) || (c1.ciphertext.compare(c2.plaintext) == 0)) && "Cipher composition failed, text doesn't match.");
CaesarCipher result;
result.init(c1.plaintext, c2.ciphertext, ((c1.key + c2.key) % 26));
if (c2.ciphertext.compare("") == 0)
result.encrypt();
return result;
}
int main(int argc, const char *argv[]) {
IOUtils io;
io.openStream(argc,argv);
std::string input, encrypted, decrypted;
input = io.readFromStream();
std::cout << "Original text:" << std::endl << input;
CaesarCipher caesar;
encrypted = caesar.encrypt(input);
std::cout << "Encrypted text:" << std::endl << encrypted;
decrypted = caesar.decrypt(encrypted);
std::cout << "Decrypted text:" << std::endl << decrypted;
if (decrypted == input) std::cout << "Decrypted text matches input!" << std::endl;
else {
std::cout << "Oops! Decrypted text doesn't match input!" << std::endl;
return 1;
}
return 0;
}