RES加密

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import Java.security.SecureRandom;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class DESHelper {
/**
* 加密解密接口
* @param data 数据
* @param password 加密解密密码必须8位字节
* @param flag 加密解密标志 0：加密，1：解密
* @return
*/
public static String doWork(String data, String password,int flag) {
try {
SecureRandom random = new SecureRandom();
DESKeySpec desKey = new DESKeySpec(password.getBytes());
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
SecretKey securekey = keyFactory.generateSecret(desKey);
Cipher cipher = Cipher.getInstance("DES");
//
if(flag == 0){
BASE64Encoder base64encoder = new BASE64Encoder();
cipher.init(Cipher.ENCRYPT_MODE, securekey, random);
return base64encoder.encode(cipher.doFinal(data.getBytes("UTF-8")));
}else{
BASE64Decoder base64decoder = new BASE64Decoder();
byte[] encodeByte = base64decoder.decodeBuffer(data);
cipher.init(Cipher.DECRYPT_MODE, securekey, random);
byte[] decoder = cipher.doFinal(encodeByte);
return new String(decoder,"UTF-8");
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* test
* @param args
*/
public static void main(String[] args) {
try {
// 明文
String str = "mobile:15810557051|type:0|content:你好";
// 密码
String password = "01010101";
String desc = DESHelper.doWork(str, password,0);
System.out.println("密文：" + desc);
// 解密
str = DESHelper.doWork(desc, password,1);
System.out.println("明文：" +str);
} catch (Exception e1) {
e1.printStackTrace();
}
}
}

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