java 下的 AES javax.crypto包 加密解密算法示例

Java Aes-CBC加密，用JAVA原生的lib做的加密解密示例，这里需要注意的是，加密的结果需要转换一下格式

//    private static String sKey="123456";private static final byte[] INIT_VECTOR = { 0x31, 0x37, 0x36, 0x35,                                                 0x34, 0x33, 0x32, 0x31,                                                 0x38, 0x27, 0x36, 0x35,                                                 0x33, 0x23, 0x32, 0x33 };    public static String encrypt(String sSrc, String sKey) throws Exception {        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");        byte[] raw = sKey.getBytes();        SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");        IvParameterSpec iv = new IvParameterSpec(INIT_VECTOR);        cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);        byte[] encrypted = cipher.doFinal(sSrc.getBytes());        return byteToHexString(encrypted);}    public static String decrypt(String sSrc, String sKey) throws Exception {        try {            byte[] raw = sKey.getBytes();            SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");            IvParameterSpec iv = new IvParameterSpec(INIT_VECTOR);            cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);            byte[] encrypted1 = hexToBytes(sSrc);            byte[] original = cipher.doFinal(encrypted1);            return new String(hexToBytes(byteToHexString(original)));        } catch (Exception ex) {            return null;        }}    public static String byteToHexString(byte[] bytes) {          StringBuffer sb = new StringBuffer(bytes.length);          String sTemp;          for (int i = 0; i < bytes.length; i++) {              sTemp = Integer.toHexString(0xFF & bytes[i]);              if (sTemp.length() < 2)                  sb.append(0);              sb.append(sTemp.toLowerCase());          }          return sb.toString();      }      public static byte[] hexToBytes(String s) {s = s.toUpperCase();int len = s.length() / 2;int ii = 0;byte[] bs = new byte[len];char c;int h;for (int i = 0; i < len; i++) {c = s.charAt(ii++);if (c <= '9') {h = c - '0';} else {h = c - 'A' + 10;}h <<= 4;c = s.charAt(ii++);if (c <= '9') {h |= c - '0';} else {h |= c - 'A' + 10;}bs[i] = (byte) h;}return bs;}