c-resources/CPlusPlus20ForProgrammers-m.../examples/ch05/fig05_18.cpp

48 lines
1.9 KiB
C++

// fig05_18.cpp
// Encrypting and decrypting text with a Vigenère cipher.
#include "cipher.h"
#include <iostream>
#include <string>
using namespace std;
int main() {
string plainText;
cout << "Enter the text to encrypt:\n";
getline(cin, plainText);
string secretKey;
cout << "\nEnter the secret key:\n";
getline(cin, secretKey);
Cipher cipher;
// encrypt plainText using secretKey
string cipherText{cipher.encrypt(plainText, secretKey)};
cout << "\nEncrypted:\n " << cipherText << '\n';
// decrypt cipherText
cout << "\nDecrypted:\n "
<< cipher.decrypt(cipherText, secretKey) << '\n';
// decrypt ciphertext entered by the user
cout << "\nEnter the ciphertext to decipher:\n";
getline(cin, cipherText);
cout << "\nDecrypted:\n "
<< cipher.decrypt(cipherText, secretKey) << '\n';
}
/**************************************************************************
* (C) Copyright 1992-2022 by Deitel & Associates, Inc. and *
* Pearson Education, Inc. All Rights Reserved. *
* *
* DISCLAIMER: The authors and publisher of this book have used their *
* best efforts in preparing the book. These efforts include the *
* development, research, and testing of the theories and programs *
* to determine their effectiveness. The authors and publisher make *
* no warranty of any kind, expressed or implied, with regard to these *
* programs or to the documentation contained in these books. The authors *
* and publisher shall not be liable in any event for incidental or *
* consequential damages in connection with, or arising out of, the *
* furnishing, performance, or use of these programs. *
**************************************************************************/