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(Java) Twofish CFB Mode Encryption

Demonstrates how to encrypt using Twofish CFB (Cipher Feedback) mode.

Chilkat Java Downloads

Java Libs for Windows, Linux, Alpine Linux,
MAC OS X, Solaris, FreeBSD, OpenBSD,
Raspberry Pi and other single board computers

Java Libs for Android

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

    crypt.put_CryptAlgorithm("twofish");
    crypt.put_CipherMode("cfb");
    crypt.put_KeyLength(256);

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

    String ivHex = "000102030405060708090A0B0C0D0E0F";
    crypt.SetEncodedIV(ivHex,"hex");

    //  The secret key must equal the size of the key.  For
    //  256-bit encryption, the binary secret key is 32 bytes.
    String keyHex = "603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4";
    crypt.SetEncodedKey(keyHex,"hex");

    //  Encrypt a string...
    String encStr = crypt.encryptStringENC("We must face the fact that the preservation of individual freedom is incompatible with a full satisfaction of our views of distributive justice. -- Friedrich Hayek");
    System.out.println(encStr);

    CkCrypt2 decrypt = new CkCrypt2();

    decrypt.put_CryptAlgorithm("twofish");
    decrypt.put_CipherMode("cfb");
    decrypt.put_KeyLength(256);
    decrypt.put_EncodingMode("hex");
    decrypt.SetEncodedIV(ivHex,"hex");
    decrypt.SetEncodedKey(keyHex,"hex");

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

  }
}

 

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