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; }
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持自学编程网。
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