//
// This function makes a polymorphic call to both the encryption
// and decryption functions, displaying the phrase both before
// and after each.
//
void encryptAndDecrypt(Crypto &msg)
{
cout << "Original - " << msg.phrase() << endl;
cout << " Level = " << msg.encryptionLevel() << endl;
cout << " # Conversions = " << msg.numConversions() << endl;
//
// Encrypt
//
msg.encrypt();
cout << " Encrypt - " << msg.phrase() << endl;
cout << " Level = " << msg.encryptionLevel() << endl;
cout << " # Conversions = " << msg.numConversions() << endl;
//
// Decyrpt
//
msg.decrypt();
cout << " Decrypt - " << msg.phrase() << endl;
cout << " Level = " << msg.encryptionLevel() << endl;
cout << " # Conversions = " << msg.numConversions() << endl;
}
int main(int argc, char **argv)
{
// Header
cout << "OTP Nitro " << VERSION << endl << "---------------" << endl;
if (argc == 1)
cout << "ERROR: You must enter a valid argument, see -h" << endl << endl;
// Arguments
signed char c;
bool gen = false, enc = false, dec = false, brn = false, lst = false;
string send, id, msg, file;
int pnum = 0;
while ( (c = getopt(argc, argv, "h?gledbs:r:m:p:f:")) != -1) {
switch (c) {
case 'g':
// Generate OTP
gen = true;
break;
case 'e':
// Encrypt
enc = true;
break;
case 'd':
// Decrypt
dec = true;
break;
case 'b':
// Burn page
brn = true;
break;
case 'l':
// List available pages
lst = true;
break;
case 's':
// sender
send = optarg;
break;
case 'r':
// book - recv id
id = optarg;
break;
case 'm':
// Message
msg = optarg;
break;
case 'p':
// Page num
if(optarg)
pnum = atoi(optarg);
break;
case 'f':
// File to parse
file = optarg;
break;
case 'h':
case '?':
printf("\n"
"Modes:\n" \
"\t-l List Books \n" \
"\t-g Gen. Book [-r]\n" \
"\t-b Burn page [-r -p]\n" \
"\t-e Encrypt [-s -r -m]\n" \
"\t-d Decrypt [-s -r -m -p] [-f]\n" \
"\n" \
"Opts:\n" \
"\t-s <sender>\n" \
"\t-r <code book>\n" \
"\t-p <page num>\n" \
"\t-m <\"message text\">\n" \
"\t-f <\"crypted format\">\n\n");
exit(1);
break;
}
}
if (gen) {
Page * page = new Page;
// Generate OTP for ID
cout << "[I] Generating OTP: " << id;
page->generate(id);
cout << ". OK" << endl << endl;
delete page;
exit(0);
}
if (enc) {
cout << "[I] Encrypted msg:" << endl;
Page * page = new Page;
Crypto * crypto = new Crypto;
// Get a usable page
pnum = page->next(id);
if (pnum == -1) {
cout << "[E] Not found pages in book: " << id << endl;
cout << "[I] You can generate them with: otpnitro -g -r " << id << endl << endl;
exit(1);
}
// Read page X from Book (RECV ID)
string out = page->read(pnum,id);
if (msg.size() > out.size())
{
cout << "You need " << msg.size() - out.size() << " more bytes in the selected book page";
delete page;
delete crypto;
exit(1);
}
// Crypto
string encrypted = crypto->encrypt(msg,out);
// Print page
Text * txt = new Text;
txt->create(pnum,id,send,encrypted);
cout << txt->print(1);
delete txt;
delete page;
delete crypto;
exit(0);
}
if (dec) {
cout << "[I] Decrypted msg:" << endl;
Page * page = new Page;
Crypto * crypto = new Crypto;
Text * txt = new Text;
if (file.length() > 0)
txt->parse(file);
else
txt->create(pnum,id,send,msg);
// Read page X from Book (RECV ID)
string out = page->read(txt->page,txt->book);
if (out.length() == 0) {
cout << "[E] The page " << pnum << " in the book " << id << " dont exist." << endl;
cout << "[I] You can check if you recieved the " << id << " book, or if it was burned." << endl;
cout << "[I] Check: otpnitro -l" << endl << endl;
exit(1);
}
// Crypto
txt->replaceAll(txt->msg," ","");
txt->msg = crypto->decrypt(txt->msg,out);
// Print MSG
cout << txt->print(0);
delete txt;
delete page;
delete crypto;
exit(0);
}
if (brn) {
cout << "[I] Burn page " << pnum;
Page * page = new Page;
if (page->burn(pnum,id))
cout << ". OK" << endl << endl;
else
cout << ". FAIL" << endl << endl;
delete page;
exit(0);
}
if (lst) {
Page * page = new Page;
cout << "[I] Available books:" << endl;
cout << page->list();
cout << endl;
delete page;
exit(0);
}
return(0);
}
int main()
{
Crypto* trans;
Crypto* trans2;
Crypto* trans3;
Crypto* trans4;
string org_msg;
string enc_msg;
string dec_msg;
// - - - - - -
// Ceasar
// - - - - - -
try
{
trans = Crypto::getCrypto("caesar", "5");
}
catch(InvalidKeyException e)
{
exit(-1);
}
org_msg = "Pull the brown book on the top shelf to activate";
enc_msg = trans->encrypt(org_msg);
dec_msg = trans->decrypt(enc_msg);
cout << "Caesar: original message: \"" << org_msg << "\"" << endl;
cout << "Caesar: encoded message: \"" << enc_msg << "\"" << endl;
cout << "Caesar: decoded message: \"" << dec_msg << "\"" << endl << endl;
delete trans;
trans = 0; // sets pointer to zero to avoid potential problems with dangling pointers
// - - - - - -
// Monoalpha
// - - - - - -
try
{
trans2 = Crypto::getCrypto("monoalpha", "QA Zwsxedcrfvtgbyhnujmikolp");
}
catch(InvalidKeyException e)
{
exit(-1);
}
org_msg = "Pull the brown book on the top shelf to activate";
enc_msg = trans2->encrypt(org_msg);
dec_msg = trans2->decrypt(enc_msg);
cout << "Monoalpha: original message: \"" << org_msg << "\"" << endl;
cout << "Monoalpha: encoded message: \"" << enc_msg << "\"" << endl;
cout << "Monoalpha: decoded message: \"" << dec_msg << "\"" << endl << endl;
delete trans2;
trans2 = 0;
// - - - - - -
// Transposition
// - - - - - -
try
{
trans3 = Crypto::getCrypto("transposition", "240153");
}
catch(InvalidKeyException e)
{
exit(-1);
}
org_msg = "The password for today is deceptive";
enc_msg = trans3->encrypt(org_msg);
dec_msg = trans3->decrypt(enc_msg);
cout << "Transposition: original message: \"" << org_msg << "\"" << endl;
cout << "Transposition: encoded message: \"" << enc_msg << "\"" << endl;
cout << "Transposition: decoded message: \"" << dec_msg << "\"" << endl << endl;
string s1 = "test transposition with same object";
string s2 = trans3->encrypt(s1);
string s3 = trans3->decrypt(s2);
cout << "Transposition: original message: \"" << s1 << "\"" << endl;
cout << "Transposition: encoded message: \"" << s2 << "\"" << endl;
cout << "Transposition: decoded message: \"" << s3 << "\"" << endl << endl;
delete trans3;
trans3 = 0;
// - - - - - - - -
// Cencryption
// - - - - - - - -
try
{
trans4 = Crypto::getCrypto("cencryption", "caesar,16,50;transposition,30142,50;caesar,21,30;");
}
catch(InvalidKeyException e)
{
exit(-1);
}
org_msg = "In this assignment you will develop a simple cryptographic library that combines three different encryption algorithms The encryption algorithms are very old an well known and are not the strongest encryption schemes available today but are much more interesting to program The algorithms can be used together to encrypt different parts of a single text message";
enc_msg = trans4->encrypt(org_msg);
dec_msg = trans4->decrypt(enc_msg);
cout << "Cencryption: original message: \"" << org_msg << "\"" << endl;
cout << "Cencryption: encoded message: \"" << enc_msg << "\"" << endl;
cout << "Cencryption: decoded message: \"" << dec_msg << "\"" << endl << endl;
delete trans4;
trans4 = 0;
return 0;
}
