How to get the fixed result in a DES/CBC mode with fixed input data and fix

Question

How to get the fixed result in a DES/CBC mode with fixed input data and fixed key. Below is my program , I tried to get the checksum of the DESInputData with the DESKeyData, but each time the result is different.
below is my code:
byte[] DESKeyData = {(byte)0x01 ,(byte)0x01 ,(byte)0x01 ,(byte)0x01, (byte)0x01 ,(byte)0x01 ,(byte)0x01 ,(byte)0x01 };
byte[] DESInputData = {(byte)0x31 ,(byte)0x31 ,(byte)0x31 ,(byte)0x31,(byte)0x31 ,(byte)0x31 ,(byte)0x31 ,(byte)0x31 };
SecretKeySpec skey = new SecretKeySpec( DESKeyData, "DES" );
Cipher cipher = Cipher.getInstance("DES/CBC/NoPadding");
cipher.init( Cipher.ENCRYPT_MODE, skey );
byte[] result = cipher.doFinal( DESInputData );

Answer 1

Use class javax.crypto.spec.IvParameterSpec to specify IV for CBC mode cipher:
// Create CBC-mode triple-DES cipher.
Cipher c = Cipher.getInstance("DESede/CBC/PKCS5Padding");
// Specify IV.
IvParameterSpec iv = new IvParameterSpec(new byte[] { (byte)0x01, (byte)0x23, (byte)0x45, (byte)0x67, (byte)0x89, (byte)0xAB, (byte)0xCD, (byte)0xEF });
// Initialize cipher with proper IV.
c.init(Cipher.ENCRYPT_MODE, yourKey, iv);
// Encrypt and decrypt should work ok now.
For more info about cryptography, search the Internet for IntroToCrypto.pdf from mr. Phil Zimmerman. This document is also part of PGP (http://www.pgp.com).
An excellent book is 'Applied Cryptography' from Bruce Schneier (http://www.counterpane.com/applied.html).
Regards,
Ronald Maas