对用户的密码进行加密

之前网上的方法有问题，对于每次生成的加密码都是不同的，现在这个程序生成的加密字符串是相同的，

package com.huawei;import javax.crypto.Cipher;import javax.crypto.spec.SecretKeySpec;/** * This program generates a AES key, retrieves its raw bytes, and then * reinstantiates a AES key from the key bytes. The reinstantiated key is used * to initialize a AES cipher for encryption and decryption. */public class AES {private static final String AES = "AES";private static final String CRYPT_KEY = "YUUAtestYUUAtest";/** * 加密 *  * @param encryptStr * @return */public static byte[] encrypt(byte[] src, String key) throws Exception {Cipher cipher = Cipher.getInstance(AES);SecretKeySpec securekey = new SecretKeySpec(key.getBytes(), AES);cipher.init(Cipher.ENCRYPT_MODE, securekey);//设置密钥和加密形式return cipher.doFinal(src);}/** * 解密 *  * @param decryptStr * @return * @throws Exception */public static byte[] decrypt(byte[] src, String key)  throws Exception  {Cipher cipher = Cipher.getInstance(AES);SecretKeySpec securekey = new SecretKeySpec(key.getBytes(), AES);//设置加密Keycipher.init(Cipher.DECRYPT_MODE, securekey);//设置密钥和解密形式return cipher.doFinal(src);}/** * 二行制转十六进制字符串 *  * @param b * @return */public static String byte2hex(byte[] b) {String hs = "";String stmp = "";for (int n = 0; n < b.length; n++) {stmp = (java.lang.Integer.toHexString(b[n] & 0XFF));if (stmp.length() == 1)hs = hs + "0" + stmp;elsehs = hs + stmp;}return hs.toUpperCase();}public static byte[] hex2byte(byte[] b) {if ((b.length % 2) != 0)throw new IllegalArgumentException("长度不是偶数");byte[] b2 = new byte[b.length / 2];for (int n = 0; n < b.length; n += 2) {String item = new String(b, n, 2);b2[n / 2] = (byte) Integer.parseInt(item, 16);}return b2;}/** * 解密 *  * @param data * @return * @throws Exception */public final static String decrypt(String data) {try {return new String(decrypt(hex2byte(data.getBytes()),CRYPT_KEY));} catch (Exception e) {}return null;}/** * 加密 *  * @param data * @return * @throws Exception */public final static String encrypt(String data) {try {return byte2hex(encrypt(data.getBytes(), CRYPT_KEY));} catch (Exception e) {}return null;}public static void main(String[] args) {String ID = "611111";String idEncrypt = encrypt(ID);System.out.println(idEncrypt);/*String idDecrypt = decrypt(idEncrypt);System.out.println(idDecrypt);*/test1();}public static void test1(){System.out.println("解密");String idDecrypt = decrypt("B799F92E7C3E5E29BB0BF976C49CB422");System.out.println(idDecrypt);}}