2-Key Triple DES

Demonstrates 2-Key Triple DES encryption (112-bit 3DES encryption).

Download Chilkat Java Library

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    CkCrypt2 crypt = new CkCrypt2();

    boolean success;
    success = crypt.UnlockComponent("Anything for 30-day trial.");
    if (success != true) {
        System.out.println("Crypt component unlock failed");
        return;
    }

    //  Specify 3DES for the encryption algorithm:
    crypt.put_CryptAlgorithm("3des");

    crypt.put_CipherMode("ecb");

    //  For 2-Key Triple-DES, use a key length of 128
    //  (Given that each byte's msb is a parity bit, the strength is really 112 bits).
    crypt.put_KeyLength(128);

    //  Pad with zeros
    crypt.put_PaddingScheme(3);

    //  EncodingMode specifies the encoding of the output for
    //  encryption, and the input for decryption.
    //  It may be "hex", "url", "base64", or "quoted-printable".
    crypt.put_EncodingMode("hex");

    //  Let's create a secret key by using the MD5 hash of a password.
    //  The Digest-MD5 algorithm produces a 16-byte hash (i.e. 128 bits)
    crypt.put_HashAlgorithm("md5");
    String keyHex;
    keyHex = crypt.hashStringENC("secretPassword");

    //  Set the encryption key:
    crypt.SetEncodedKey(keyHex,"hex");

    //  Encrypt
    String encStr;
    encStr = crypt.encryptStringENC("The quick brown fox jumped over the lazy dog");
    System.out.println(encStr);

    //  Now decrypt:
    String decStr;
    decStr = crypt.decryptStringENC(encStr);
    System.out.println(decStr);
  }
}