/**
* Returns all phases of decrypting and decoding in a String
*
* @param msg String
* @param exp BigInteger
* @param mod BigInteger
* @return String
*/
public String getDeCrypted(String msg, BigInteger exp, BigInteger mod) {
StringBuilder s = new StringBuilder();
AlphabetNum alpha = new AlphabetNum();
EncryptDecrypt decrypter = new EncryptDecrypt();
// --------------------cryptotext to numbers------------------
s.append("Cryptotext: \n");
s.append(msg + "\n\n");
s.append(alpha.getLetters() + "\n\n");
msg = alpha.stringOfLettersToNumbers(msg);
String[] stringMessage = msg.split(" "); // Message in String[]
// ----------------------deCrypting--------------------------
BigInteger[] numberMessage = new BigInteger[stringMessage.length];
for (int i = 0; i < numberMessage.length; i++) {
numberMessage[i] = new BigInteger(stringMessage[i]); // message to BigInteger[]
}
s.append("Encrypted message: \n");
s.append(msg);
s.append("\n\nDecrypting: \n");
for (int i = 0; i < numberMessage.length; i++) {
CalculationPhase phase = new CalculationPhase(numberMessage[i], exp);
s.append(phase.getAll(mod));
s.append("\n\n");
}
s.append("Decrypted: \n");
Integer[] integerMessage = new Integer[numberMessage.length];
for (int i = 0; i < numberMessage.length; i++) {
integerMessage[i] = (decrypter.decryptToInt(numberMessage[i], exp, mod));
s.append(integerMessage[i] + " ");
}
// -----------------------deCoding-------------------------------
s.append("\n\n" + alpha.getNumbers());
s.append("\n\nDecoded text: ");
String unCoded = (deCode(integerMessage));
s.append(unCoded + "\n");
return s.toString();
}
/**
* Decrypts and decodes cryptotext to a plaintext.
*
* @param msg String
* @param exp BigInteger
* @param mod BigInteger
* @return String
*/
public String getDeCryptedSecure(String msg, BigInteger exp, BigInteger mod) {
AlphabetNum alpha = new AlphabetNum();
EncryptDecrypt decrypter = new EncryptDecrypt();
// --------------------cryptotext to numbers------------------
msg = alpha.stringOfLettersToNumbers(msg);
String[] stringMessage = msg.split(" "); // Message in String[]
// ----------------------deCrypting--------------------------
BigInteger[] numberMessage = new BigInteger[stringMessage.length];
for (int i = 0; i < numberMessage.length; i++) {
numberMessage[i] = new BigInteger(stringMessage[i]); // message to BigInteger[]
}
Integer[] integerMessage = new Integer[numberMessage.length];
for (int i = 0; i < numberMessage.length; i++) {
integerMessage[i] = (decrypter.decryptToInt(numberMessage[i], exp, mod));
}
// -----------------------deCoding-------------------------------
String deCoded = (deCode(integerMessage));
return deCoded;
}
