Andriod 的 DES 加密

1主要代码  

关于  des 的导包 问题   要导  安卓本身的 64 位包  假设找com.sun.....可能会发生foundclass异常

String key;
public DES(String key)
{

this.key =key;
}

public String encrypt(String str) {

byte[] enc = null;
try {
enc = desEncrypt(str, key);
}
catch (Exception ex) {
}

// return new com.e.text.BASE64Encoder().encode(enc);
// return new BASE64Encoder().encode(enc);
return new String (Base64.encode( enc, Base64.DEFAULT));
}
public static byte[] desEncrypt(String message, String key) throws Exception {
Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");

DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8"));

SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
SecretKey secretKey = keyFactory.generateSecret(desKeySpec);
IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8"));
cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv);

return cipher.doFinal(message.getBytes("UTF-8"));
}

附  demo 

http://download.csdn.net/detail/wangchunshun/8180345