JAVA DESKeySpec 加密的实现

public static String DesEncrypt(String jobNum,String keys)
{
    try {
        byte[] key = keys.getBytes();
        // 初始化向量
        IvParameterSpec iv = new IvParameterSpec(key);
        DESKeySpec desKey = new DESKeySpec(key);
        // 创建一个密匙工厂，然后用它把DESKeySpec转换成securekey
        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/CBC/PKCS5Padding");
        // 用密匙初始化Cipher对象
        cipher.init(Cipher.ENCRYPT_MODE, securekey, iv);
        // 现在，获取数据并加密
        // 正式执行加密操作
        byte[] tt=jobNum.getBytes(StandardCharsets.UTF_8);
        byte[] tq= cipher.doFinal(tt);
        return parseByte2HexStr(tq);
    } catch (Throwable e) {
        e.printStackTrace();
    }
    return null;
}
/**
 * 将二进制转换成16进制
 *
 * @param buf
 * @return
 */
public static String parseByte2HexStr(byte buf[]) {
    StringBuffer sb = new StringBuffer();
    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();
}
public static byte[] convertHexString(String ss)
{
    byte digest[] = new byte[ss.length() / 2];
    for(int i = 0; i < digest.length; i++)
    {
        String byteString = ss.substring(2 * i, 2 * i + 2);
        int byteValue = Integer.parseInt(byteString, 16);
        digest[i] = (byte)byteValue;
    }
    return digest;
}