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    <p>Here's a very simply static encrypt/decrypt class biased on the Bouncy Castle no padding example by Jose Luis Montes de Oca. This one is using "DESede/ECB/PKCS7Padding" so I don't have to bother manually padding.</p> <pre><code> package com.zenimax.encryption; import java.security.InvalidKeyException; import java.security.NoSuchAlgorithmException; import java.security.NoSuchProviderException; import java.security.Security; import javax.crypto.BadPaddingException; import javax.crypto.Cipher; import javax.crypto.IllegalBlockSizeException; import javax.crypto.NoSuchPaddingException; import javax.crypto.SecretKey; import javax.crypto.spec.SecretKeySpec; import org.bouncycastle.jce.provider.BouncyCastleProvider; /** * * @author Matthew H. Wagner */ public class TripleDesBouncyCastle { private static String TRIPLE_DES_TRANSFORMATION = "DESede/ECB/PKCS7Padding"; private static String ALGORITHM = "DESede"; private static String BOUNCY_CASTLE_PROVIDER = "BC"; private static void init() { Security.addProvider(new BouncyCastleProvider()); } public static byte[] encode(byte[] input, byte[] key) throws IllegalBlockSizeException, BadPaddingException, NoSuchAlgorithmException, NoSuchProviderException, NoSuchPaddingException, InvalidKeyException { init(); SecretKey keySpec = new SecretKeySpec(key, ALGORITHM); Cipher encrypter = Cipher.getInstance(TRIPLE_DES_TRANSFORMATION, BOUNCY_CASTLE_PROVIDER); encrypter.init(Cipher.ENCRYPT_MODE, keySpec); return encrypter.doFinal(input); } public static byte[] decode(byte[] input, byte[] key) throws IllegalBlockSizeException, BadPaddingException, NoSuchAlgorithmException, NoSuchProviderException, NoSuchPaddingException, InvalidKeyException { init(); SecretKey keySpec = new SecretKeySpec(key, ALGORITHM); Cipher decrypter = Cipher.getInstance(TRIPLE_DES_TRANSFORMATION, BOUNCY_CASTLE_PROVIDER); decrypter.init(Cipher.DECRYPT_MODE, keySpec); return decrypter.doFinal(input); } } </code> </pre>
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