public void start() {
do {
System.out.println("--> SELECT A FUNCTION.");
System.out.println("--> * 0. Finish JSecretStrings");
System.out.println("--> * 1. Encrypt String using standard algorithms");
System.out.println("--> * 2. Decrypt String using standard algorithms");
System.out.println("--> * 3. Multiple words encryption using alternative algorithms");
System.out.println("--> * 4. Multiple words decryption using alternative algorithms");
System.out.print("\nType your selection: ");
switch (scanner.nextInt()) {
case 0:
System.out.println("--- Good Bye ---");
System.exit(0);
break;
case 1:
System.out.println("");
System.out.print("Type string to encrypt: ");
scanner.nextLine();
final String toEncrypt = scanner.nextLine();
System.out.print("Super secret Keyword: ");
final String keyWord = scanner.nextLine();
final String encrypted = Crypter.encrypt(toEncrypt, keyWord);
System.out.println("\nEncrypted string: " + encrypted);
break;
case 2:
System.out.println("");
System.out.print("Type string to decrypt: ");
scanner.nextLine();
final String toDecrypt = scanner.nextLine();
System.out.print("Super secret Keyword: ");
final String secretKeyWord = scanner.nextLine();
final String decrypted = Crypter.decrypt(toDecrypt, secretKeyWord);
System.out.println("\nDecrypted string: " + decrypted);
break;
case 3:
System.out.println("");
System.out.print("How many Strings do you want to encrypt? ");
scanner.nextLine();
final int wordsToEncryptCount = scanner.nextInt();
ArrayList<String> wordsToEncrypt = new ArrayList<>();
scanner.nextLine();
for (int i = 0; i < wordsToEncryptCount; i++) {
System.out.print("Type string " + i + ": ");
wordsToEncrypt.add(scanner.nextLine());
}
System.out.print("Super secret keyword: ");
final String secretWord = scanner.nextLine();
final String encWords = Crypter.customEncrypt(wordsToEncrypt, secretWord);
System.out.println("\nEncrypted string: " + encWords);
break;
case 4:
System.out.println("");
System.out.print("Type string to decrypt: ");
scanner.nextLine();
final String wordsToDecrypt = scanner.nextLine();
System.out.print("Super secret Keyword: ");
final String superSecretWord = scanner.nextLine();
final ArrayList<String> decryptedWords =
Crypter.customDecrypt(wordsToDecrypt, superSecretWord);
for (String word : decryptedWords) {
System.out.println("String decrypted: " + word);
}
System.out.println("");
break;
default:
System.out.println("Please select a valid option");
}
System.out.print("\n[TYPE A CHAR AND ENTER TO CONTINUE] ");
scanner.next();
} while (true);
}