public class DESCode {
private String algorithm = "DESede/CBC/PKCS7Padding";//加密方法／运算模式／填充模式
private String charset = "UTF-8";//编码
private Cipher encCipher;//加密cipher
private Cipher decCipher;//解密cipher
private String encStrKey =null;//密钥
private String encSourceSpliter="$";
private String hashSourceSpliter="_";
private MessageDigest digest;//计算摘要对象
private KeyGenerator keyGene;
public String getKey()
{
return this.keyGene.getKey();
}
public DESCode(KeyGenerator keyGene)throws NoSuchAlgorithmException,
NoSuchPaddingException, InvalidKeyException,
InvalidAlgorithmParameterException, DecoderException {
    Security
    .addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());//添加jce支持(sun有其默认实现)

    this.keyGene = keyGene;
  
    digest=MessageDigest.getInstance("MD5");
    this.encStrKey = keyGene.getEncKeyStr();
    init();
}
private void init() throws NoSuchAlgorithmException,
     NoSuchPaddingException, InvalidKeyException,
     InvalidAlgorithmParameterException, DecoderException {
    encCipherInit();
    decCipherInit();
}

private void encCipherInit() throws NoSuchAlgorithmException,
     NoSuchPaddingException, InvalidKeyException,
     InvalidAlgorithmParameterException, DecoderException {
    DESedeKeySpec encKey = new DESedeKeySpec(Hex.decodeHex(this.encStrKey
      .toCharArray()));
    SecretKey secrekey = new SecretKeySpec(encKey.getKey(), algorithm);
    this.encCipher = Cipher.getInstance(this.algorithm);
    IvParameterSpec iv = new IvParameterSpec(new byte[] { 1, 2, 3, 4, 5, 6,
      7, 8 });//iv向量(加密解密双方要一致)
    encCipher.init(Cipher.ENCRYPT_MODE, secrekey, iv);//初始化cipher对象
}

private void decCipherInit() throws InvalidKeyException, DecoderException,
     NoSuchAlgorithmException, NoSuchPaddingException,
     InvalidAlgorithmParameterException {
    DESedeKeySpec encKey = new DESedeKeySpec(Hex.decodeHex(this.encStrKey
      .toCharArray()));
    SecretKey secrekey = new SecretKeySpec(encKey.getKey(), algorithm);
    this.decCipher = Cipher.getInstance(this.algorithm);
    IvParameterSpec iv = new IvParameterSpec(new byte[] { 1, 2, 3, 4, 5, 6,
      7, 8 });
    decCipher.init(Cipher.DECRYPT_MODE, secrekey, iv);//初始化cipher对象

}

public String encrypt(String sourceMsg)//加密数据
     throws UnsupportedEncodingException, IllegalBlockSizeException,
     BadPaddingException, InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidAlgorithmParameterException, DecoderException {
    if(!this.encStrKey.equals(this.keyGene.getEncKeyStr()))
    {
     this.encStrKey = keyGene.getEncKeyStr();
     init();
    }
    byte[] msg = sourceMsg.getBytes(this.charset);
    byte[] value = this.encCipher.doFinal(msg);
    return new String(Base64.encodeBase64(value));

}

public String decrypt(String msgStr) throws IllegalBlockSizeException,
     BadPaddingException, UnsupportedEncodingException, InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidAlgorithmParameterException, DecoderException {//解密数据
    if(!this.encStrKey.equals(this.keyGene.getEncKeyStr()))
    {
     this.encStrKey = keyGene.getEncKeyStr();
     init();
    }
    byte[] temp = Base64.decodeBase64(msgStr);
    byte[] value = this.decCipher.doFinal(temp);
    String result = new String(value, this.charset);
    return URLDecoder.decode(result, this.charset);
}
public String md5EnCode(String src,boolean replace)
{
if(replace)
{
    src=src.replace(this.encSourceSpliter, this.hashSourceSpliter);
}
return Hex.encodeHexString(digest.digest(src.getBytes()));

}
public String urlEncode(String... str) throws UnsupportedEncodingException {
    StringBuilder sb = new StringBuilder();
    for (String s : str) {
     sb.append(URLEncoder.encode(s, this.charset));
     sb.append(this.encSourceSpliter);

    }
    int len = sb.length();
    if (len > 0) {

     sb.delete(len-1, len );
    }
    return sb.toString();

}

public static void main(String[] args) throws Exception {
    DESCode descode = new DESCode(new KeyGenerator());
    MessageDigest dig = MessageDigest.getInstance("MD5");
    String msg1 = "ybcola$"
      + Hex.encodeHexString(dig.digest("pppppppp".getBytes()))
      + "$www.yltch.net";
    String msg2 = descode.urlEncode("ybcola", Hex.encodeHexString(dig
      .digest("pppppppp".getBytes())), "www.yltch.net");
    String msg3 = descode.urlEncode("弟弟", "1000", "7", "根据推广逻辑，增加的奖励",
      "dz_02156356548", "www.yltch.net");
    System.out.println(msg1);
    System.out.println(msg2);
    System.out.println(msg3);
    System.out.println("-------encode------");
    msg1= descode.encrypt(msg1);
    msg2= descode.encrypt(msg2);
    msg3= descode.encrypt(msg3);

    System.out.println(msg1);
    System.out.println(msg2);
    System.out.println(msg3);
    System.out.println("------decode--------");
    // String msg4 =
    // "hOWzn/a38v2idQegaPnBUqJL3jsF9uh8OBSQ+LKoCeXGNkXX2ceCIn14g6FbFF4StrBoOfBH6UPRoHvO/Ftwp3qL4FHf/1+3aCU3K0esqqQ=";
    System.out.println(descode.decrypt(msg1));
    System.out.println(descode.decrypt(msg2));
    System.out.println(descode.decrypt(msg3));
}
}

public class KeyGenerator {
private String key="hongsoft";
private String encKeyStr="9F8C243AEE347183B39DD81B20941E86BC11529B034C8842";
public String getEncKeyStr() {
    return encKeyStr;
}
public void setEncKeyStr(String encKeyStr) {
    this.encKeyStr = encKeyStr;
}
public String getKey() {
    return key;
}
public void setKey(String key) {
    this.key = key;
}

}