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Code
import sun.misc.BASE64Encoder;
import sun.misc.BASE64Decoder;
import javax.crypto.*;
import javax.crypto.spec.DESKeySpec;
import javax.crypto.spec.IvParameterSpec;
import java.security.Key;
import java.security.spec.AlgorithmParameterSpec;
/**
 * Ê¹ÓÃDES¼ÓÃܺͽâÃܵķ½·¨
 * @author:azhong
 *User: Administrator
 * Date: 2007-10-27
 * Time: 10:54:36
 *  */
public class CryptoTools {
    private final byte [] DESkey = {};//ÉèÖÃÃÜÔ¿£¬ÂÔÈ¥
    private final byte[] DESIV = {};//ÉèÖÃÏòÁ¿£¬ÂÔÈ¥
    private AlgorithmParameterSpec iv =null;//¼ÓÃÜËã·¨µÄ²ÎÊý½Ó¿Ú£¬IvParameterSpecÊÇËüµÄÒ»¸öʵÏÖ
    private Key key =null;
    public CryptoTools() throws  Exception {
         DESKeySpec keySpec = new DESKeySpec(DESkey);//ÉèÖÃÃÜÔ¿²ÎÊý
         iv = new IvParameterSpec(DESIV);//ÉèÖÃÏòÁ¿
         SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");//»ñµÃÃÜÔ¿¹¤³§
         key = keyFactory.generateSecret(keySpec);//µÃµ½ÃÜÔ¿¶ÔÏó
    }
    public String encode(String data) throws Exception {
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