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Springboot如何实现Web系统License授权认证

code2roc 人气:1

在我们做系统级框架的时候,我们要一定程度上考虑系统的使用版权,不能随便一个人拿去在任何环境都能用,所以我们需要给我们系统做一个授权认证机制,只有上传了我们下发的lic文件并验证通过,才能正常使用,下面就开始一步一步实现这个功能

1.生成机器码

我们首先要做的就是对软件部署的环境的唯一性进行限制,这里使用的是macadderss,当然你也可以换成cpu序列编号,并无太大影响,先上代码

private static String getMac() {
    try {
      Enumeration<NetworkInterface> el = NetworkInterface
          .getNetworkInterfaces();
      while (el.hasMoreElements()) {
        byte[] mac = el.nextElement().getHardwareAddress();
        if (mac == null)
          continue;
        String hexstr = bytesToHexString(mac);
        return getSplitString(hexstr, "-", 2).toUpperCase();
      }
    } catch (Exception exception) {
      exception.printStackTrace();
    }
    return null;
  } 
 
public static String getMachineCode() throws Exception{
    Set<String> result = new HashSet<>();
    String mac = getMac();
    result.add(mac);
    Properties props = System.getProperties();
    String javaVersion = props.getProperty("java.version");
    result.add(javaVersion);
    String javaVMVersion = props.getProperty("java.vm.version");
    result.add(javaVMVersion);
    String osVersion = props.getProperty("os.version");
    result.add(osVersion);
    String code = Encrpt.GetMD5Code(result.toString());
    return getSplitString(code, "-", 4);
 
  }

这里进行的操作是取出机器码,与java版本,jvm,操作系统参数进行混合,并进行MD5操作

2.进行lic文件的生成

这是我生成证书与进行授权证书的界面,可以看到授权证书主要包含三个要素,机器码,是否永久有效标识,证书时效,我们会将这些数据写入文本中并进行加密处理,看下生成证书的代码

public static void getLicense(String isNoTimeLimit, String licenseLimit, String machineCode, String licensePath, String priavateKeyPath) throws Exception{
    String[] liccontent = {
        "LICENSEID=yanpeng19940119@gmail.com",
        "LICENSENAME=YBLOG使用证书",
        MessageFormat.format("LICENSETYPE={0}",isNoTimeLimit),
        MessageFormat.format("EXPIREDAY={0}",licenseLimit), //日期采用yyyy-MM-dd日期格式
        MessageFormat.format("MACHINECODE={0}",machineCode),
        ""
    };
 
    //将lic内容进行混合签名并写入内容
    StringBuilder sign = new StringBuilder();
    for(String item:liccontent){
      sign.append(item+"yblog");
    }
    liccontent[5] = MessageFormat.format("LICENSESIGN={0}",Encrpt.GetMD5Code(sign.toString()));
    FileUtil.createFileAndWriteLines(licensePath,liccontent);
    //将写入的内容整体加密替换
    String filecontent =FileUtil.readFileToString(licensePath);
    String encrptfilecontent = Encrpt.EncriptWRSA_Pri(filecontent,priavateKeyPath);
    File file = new File(licensePath);
    file.delete();
    FileUtil.createFile(licensePath,encrptfilecontent);
  }

这里我们是将一些信息与特定标识进行拼接然后加密,使用的是RSA加密,我们使用私钥加密公钥解密,保证验证的开放性与生成证书的私密性,密钥可以使用java自带的keytool工具进行生成,

教程地址:http://note.youdao.com/noteshare?id=09e2bfc902b21a335a4505f7946a45c9

在lic文件最后我们加上一个LICENSESIGN参数,对其他信息进行一次加密,防止信息被篡改,生成文件后再对文本进行整体加密

这里生成密钥的长度为2048而非1024,所以解密块长度为256,这里需要注意下,公钥加密方法为,为了方便大家,这里提供下具体加密代码

private static final int MAX_ENCRYPT_BLOCK = 117;
private static final int MAX_DECRYPT_BLOCK=256; 
public static String EncriptWRSA_Pri(String data,String path) throws Exception{
    String encryptData ="";
 
    FileInputStream in = new FileInputStream(path);
    KeyStore ks = KeyStore.getInstance("JKS");// JKS: Java KeyStoreJKS,可以有多种类型
    ks.load(in, "123".toCharArray());
    in.close();
 
    String alias = "yblogkey"; // 记录的别名
    String pswd = "123"; // 记录的访问密码
    java.security.cert.Certificate cert = ks.getCertificate(alias);
    //获取私钥
    PrivateKey privateKey = (PrivateKey) ks.getKey(alias, pswd.toCharArray());
    //私钥加密
    Cipher cipher = Cipher.getInstance("rsa");
    SecureRandom random = new SecureRandom();
    cipher.init(Cipher.ENCRYPT_MODE, privateKey, random);
 
    try {
      // Cipher cipher = Cipher.getInstance("RSA");
      //  cipher.init(Cipher.ENCRYPT_MODE, publicKey);
      int length = data.getBytes().length;
      int offset = 0;
      byte[] cache;
      ByteArrayOutputStream outStream = new ByteArrayOutputStream();
      int i = 0;
      while(length - offset > 0){
        if(length - offset > MAX_ENCRYPT_BLOCK){
          cache = cipher.doFinal(data.getBytes(), offset, MAX_ENCRYPT_BLOCK);
        }else{
          cache = cipher.doFinal(data.getBytes(), offset, length - offset);
        }
        outStream.write(cache, 0, cache.length);
        i++;
        offset = i * MAX_ENCRYPT_BLOCK;
      }
      return encode.encode(outStream.toByteArray());
    } catch (IllegalBlockSizeException e) {
      e.printStackTrace();
    } catch (BadPaddingException e) {
      e.printStackTrace();
    }
    return encryptData;
  }
 
 public static String DecriptWithRSA_Pub(String data,String path) throws Exception{
    X509Certificate x509Certificate = (X509Certificate) getCertificate(path);
    // 获得公钥
    PublicKey publicKey = x509Certificate.getPublicKey();
 
    Cipher cipher = Cipher.getInstance("rsa");
    SecureRandom random = new SecureRandom();
 
    byte[] bEncrypt = decoder.decodeBuffer(data);
    //公钥解密
    cipher.init(Cipher.DECRYPT_MODE, publicKey, random);
    String decryptData = "";
    // byte[] plainData = cipher.doFinal(bEncrypt);
    // System.out.println("11111:"+new String(plainData));
    int inputLen = bEncrypt.length;
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    int offSet = 0;
    byte[] cache;
    int i = 0;
    // 对数据分段解密
    while (inputLen - offSet > 0) {
      if (inputLen - offSet > MAX_DECRYPT_BLOCK) {
        cache = cipher.doFinal(bEncrypt, offSet, MAX_DECRYPT_BLOCK);
      } else {
        cache = cipher.doFinal(bEncrypt, offSet, inputLen - offSet);
      }
      out.write(cache, 0, cache.length);
      i++;
      offSet = i * MAX_DECRYPT_BLOCK;
    }
    byte[] decryptedData = out.toByteArray();
    out.close();
    return new String(decryptedData);
  }

3.验证lic

我们会在系统中注册一个拦截器,未通过系统授权认证会自动跳转到lic文件上传界面,springboot接收文件与常规java有一些不同,使用的MultipartFile对象,会获取到上传文件的数组,进行操作,看下保存上传lic文件代码

@RequestMapping(value="/login/licenseauth",method= RequestMethod.POST)
  @ResponseBody
  public Map<Object,Object> licenseauth(MultipartHttpServletRequest multiReq){
    Map<Object,Object> map = new HashMap<Object,Object>();
    try {
      String savePath = ResourceUtils.getURL("src/main/resources/static/lic").getPath();
      MultipartFile file = multiReq.getFile("file");
      String filename = file.getOriginalFilename();
      File uploadfile = new File(savePath + "\\" + filename);
      if (!uploadfile.exists()){
        //获取item中的上传文件的输入流
        InputStream in = file.getInputStream();
        //创建一个文件输出流
        FileOutputStream out = new FileOutputStream(savePath + "\\" + filename);
        //创建一个缓冲区
        byte buffer[] = new byte[1024];
        //判断输入流中的数据是否已经读完的标识
        int len = 0;
        //循环将输入流读入到缓冲区当中,(len=in.read(buffer))>0就表示in里面还有数据
        while((len=in.read(buffer))>0){
          //使用FileOutputStream输出流将缓冲区的数据写入到指定的目录(savePath + "\\" + filename)当中
          out.write(buffer, 0, len);
        }
        //关闭输入流
        in.close();
        //关闭输出流
        out.close();
      }
      map.put("executestatus","1");
 
    }catch (Exception e){
      e.printStackTrace();
      map.put("executestatus","0");
    }
 
    return map;
  }

有了上传文件,我们就可以通过系统内置的公钥对lic文件的机器码,授权时间进行验证,确定是否能正常访问系统

public static boolean authLicense() throws Exception{
    boolean isauth = false;
    String pubkpath = ResourceUtils.getURL("src/main/resources/static/lic/").getPath()+"yblog.crt";
    String licpath = ResourceUtils.getURL("src/main/resources/static/lic/").getPath();
    File lic = new File(licpath);
    String[] filelist = lic.list();
    if (filelist.length>0){
      for (int i = 0; i < filelist.length; i++) {
        if (filelist[i].contains(".lic")){
          File readfile = new File(licpath + filelist[i]);
          if (readfile.isFile()) {
            String liccontent = FileUtil.readFileToString(readfile);
            String decriptliccontent = Encrpt.DecriptWithRSA_Pub(liccontent,pubkpath);
            HashMap<String, String> props = genDataFromArrayByte(decriptliccontent.getBytes());
            String licenseid = props.get("LICENSEID");
            String licensename= props.get("LICENSENAME");
            String licensetype = props.get("LICENSETYPE");
            String liclimit = props.get("EXPIREDAY");
            String machinecode = props.get("MACHINECODE");
            String lincensesign = props.get("LICENSESIGN");
            //验证签名
            String allinfogroup = "LICENSEID="+licenseid+"yblog"+"LICENSENAME="+licensename+"yblog"+
                "LICENSETYPE="+licensetype+"yblog"+"EXPIREDAY="+liclimit+"yblog"+"MACHINECODE="+machinecode+"yblogyblog";
            if (lincensesign.equals(Encrpt.GetMD5Code(allinfogroup))){
              //验证机器码
              if (getMachineCode().equals(machinecode)){
                SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");
                Date bt=new Date();
                Date et=sdf.parse(liclimit);
                //验证时间
                if(bt.compareTo(et)<=0){
                  isauth = true;
                  System.out.println("注册文件:"+filelist[i]+",已通过验证");
                  break;
                }else{
                  System.out.println("证书过期");
                }
              }else{
                System.out.println("机器码不一致");
              }
            }else{
              System.out.println("签名不一致");
            }
          }
        }
      }
    }else{
      System.out.println("未上传证书");
    }
    return isauth;
  }

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