DES加密解密测试

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package com.des;import java.security.SecureRandom;import javax.crypto.Cipher;import javax.crypto.SecretKey;import javax.crypto.SecretKeyFactory;import javax.crypto.spec.DESKeySpec;public class DES {public DES() {}//测试public static void main(String args[]) {//待加密内容String str = "测试内容";//密码，长度要是8的倍数String password = "9588028820109132570743325311898426347857298773549468758875018579537757772163084478873699447306034466200616411960574122434059469100235892702736860872901247123456";byte[] result = DES.encrypt(str.getBytes(),password);System.out.println("加密后："+new String(result));//直接将如上内容解密try {byte[] decryResult = DES.decrypt(result, password);System.out.println("解密后："+new String(decryResult));} catch (Exception e1) {e1.printStackTrace();}}/*** 加密* @param datasource byte[]* @param password String* @return byte[]*/public static byte[] encrypt(byte[] datasource, String password) {try{SecureRandom random = new SecureRandom();DESKeySpec desKey = new DESKeySpec(password.getBytes());//创建一个密匙工厂，然后用它把DESKeySpec转换成SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");SecretKey securekey = keyFactory.generateSecret(desKey);//Cipher对象实际完成加密操作Cipher cipher = Cipher.getInstance("DES");//用密匙初始化Cipher对象cipher.init(Cipher.ENCRYPT_MODE, securekey, random);//现在，获取数据并加密//正式执行加密操作return cipher.doFinal(datasource);}catch(Throwable e){e.printStackTrace();}return null;}/*** 解密* @param src byte[]* @param password String* @return byte[]* @throws Exception*/public static byte[] decrypt(byte[] src, String password) throws Exception {// DES算法要求有一个可信任的随机数源SecureRandom random = new SecureRandom();// 创建一个DESKeySpec对象DESKeySpec desKey = new DESKeySpec(password.getBytes());// 创建一个密匙工厂SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");// 将DESKeySpec对象转换成SecretKey对象SecretKey securekey = keyFactory.generateSecret(desKey);// Cipher对象实际完成解密操作Cipher cipher = Cipher.getInstance("DES");// 用密匙初始化Cipher对象cipher.init(Cipher.DECRYPT_MODE, securekey, random);// 真正开始解密操作return cipher.doFinal(src);}}
转载：http://www.cnblogs.com/langtianya/p/3715975.html
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