java加密，解密方法

/**
 *AES加密解密工具類
 *@author M-Y
 */
public class AESUtil {
   private static Logger log = LoggerFactory.getLogger(AESUtil.class);
      private static final String defaultCharset = "UTF-8";
      private static final String KEY_AES = "AES";
      private static final String KEY = "2A3D75862E69BF61DFAD94017E930227A715C8E533AA1A12361D6";
      
    /**
     * 加密
     *
     * @param data 需要加密的內容
     * @param key 加密密碼
     * @return
     */
    public static String encrypt(String data, String key) {
        return doAES(data, key, Cipher.ENCRYPT_MODE);
    }
 
    /**
     * 解密
     *
     * @param data 待解密內容
     * @param key 解密密鑰
     * @return
     */
    public static String decrypt(String data, String key) {
        return doAES(data, key, Cipher.DECRYPT_MODE);
    }
 
    /**
     * 加解密
     *
     * @param data 待處理數據
     * @param password  密鑰
     * @param mode 加解密mode
     * @return
     */
    private static String doAES(String data, String key, int mode) {
        try {
            if (StringUtils.isBlank(data) || StringUtils.isBlank(key)) {
                return null;
            }
            //判斷是加密還是解密
            boolean encrypt = mode == Cipher.ENCRYPT_MODE;
            byte[] content;
            //true 加密內容 false 解密內容
            if (encrypt) {
                content = data.getBytes(defaultCharset);
            } else {
                content = parseHexStr2Byte(data);
            }
            //1.構造密鑰生成器，指定爲AES算法,不區分大小寫
            KeyGenerator kgen = KeyGenerator.getInstance(KEY_AES);
            //2.根據ecnodeRules規則初始化密鑰生成器
            /*
             * 問題我已解決，這個是由於linux和window的內核不同造成的！
             * SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
             * secureRandom.setSeed(PASSWORD.getBytes());
             * 然後初始化，就能解決這個問題！
             */
            SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
            secureRandom.setSeed(key.getBytes());

            //生成一個128位的隨機源,根據傳入的字節數組
            kgen.init(128, secureRandom);
            //3.產生原始對稱密鑰
            SecretKey secretKey = kgen.generateKey();
            //4.獲得原始對稱密鑰的字節數組
            byte[] enCodeFormat = secretKey.getEncoded();
            //5.根據字節數組生成AES密鑰
            SecretKeySpec keySpec = new SecretKeySpec(enCodeFormat, KEY_AES);
            //6.根據指定算法AES自成密碼器
            Cipher cipher = Cipher.getInstance(KEY_AES);// 創建密碼器
            //7.初始化密碼器，第一個參數爲加密(Encrypt_mode)或者解密解密(Decrypt_mode)操作，第二個參數爲使用的KEY
            cipher.init(mode, keySpec);// 初始化
            byte[] result = cipher.doFinal(content);
            if (encrypt) {
                //將二進制轉換成16進制
                return parseByte2HexStr(result);
            } else {
                return new String(result, defaultCharset);
            }
        } catch (Exception e) {
           log.error("AES 密文處理異常", e);
        }
        return null;
    }
    /**
     * 將二進制轉換成16進制
     *
     * @param buf
     * @return
     */
    public static String parseByte2HexStr(byte buf[]) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < buf.length; i++) {
            String hex = Integer.toHexString(buf[i] & 0xFF);
            if (hex.length() == 1) {
                hex = '0' + hex;
            }
            sb.append(hex.toUpperCase());
        }
        return sb.toString();
    }
    /**
     * 將16進制轉換爲二進制
     *
     * @param hexStr
     * @return
     */
    public static byte[] parseHexStr2Byte(String hexStr) {
        if (hexStr.length() < 1) {
            return null;
        }
        byte[] result = new byte[hexStr.length() / 2];
        for (int i = 0; i < hexStr.length() / 2; i++) {
            int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16);
            int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2), 16);
            result[i] = (byte) (high * 16 + low);
        }
        return result;
    }
    public static void main(String[] args) throws Exception {

        String decrypt = AESUtil.encrypt("119852292879", BusinessTypeConstant.SECRET_KEY);
        System.out.println(decrypt);

       String str =  AESUtil.decrypt("6F47907853576C750915B9A50455285D",BusinessTypeConstant.SECRET_KEY);
        System.out.println(str);
//     KeyPairGenerator generator = KeyPairGenerator.getInstance("RSA");
//        generator.initialize(512, new SecureRandom());
//     KeyPair pair = generator.generateKeyPair();
//        PublicKey pubKey = pair.getPublic();
//        PrivateKey privKey = pair.getPrivate();
//
//     byte[] pk = pubKey.getEncoded();
//        byte[] privk = privKey.getEncoded();
//
//        String strpk = new String(Base64.encodeBase64(pk));
//     System.out.println("=====================生成公鑰祕鑰："+strpk);
//
//     String strppk = new String(Base64.encodeBase64(privk));
//     System.out.println("=====================生成私鑰祕鑰："+strppk);
//     //*******************************************************************************************************************
//        String content = "{'repairPhone':'18547854787','customPhone':'12365478965','captchav':'58m7'}";
//        System.out.println("加密前：" + content);
//        System.out.println("加密密鑰和解密密鑰：" + KEY);
//        String encrypt = encrypt(content, KEY);
//        System.out.println("加密後：" + encrypt);
//        String decrypt = decrypt(encrypt, KEY);
//        System.out.println("解密後：" + decrypt);
    }  
}