基于TrueLicense实现产品License验证功能

时间 2019-11-10

标签基于 truelicense 实现产品 license 验证功能繁體版

原文原文链接

受朋友所托，须要给产品加上License验证功能，进行试用期受权，在试用期事后，产品再也不可用。java

经过研究调查，能够利用Truelicense开源框架实现，下面分享一下如何利用Truelicense实现受权验证功能。服务器

在此以前先介绍一下License受权和验证的原理：app

一、首先须要生成密钥对，方法有不少，JDK中提供的KeyTool便可生成。框架

二、受权者保留私钥，使用私钥对包含受权信息（如截止日期，MAC地址等）的license进行数字签名。工具

三、公钥交给使用者（放在验证的代码中使用），用于验证license是否符合使用条件。测试

实现步骤（代码参考前贤网上案例实现，再也不赘写）：this

1、使用KeyTool生成密钥对加密

转到CMD命令行，切换到%JAVA_HOME%\jre\bin\security\ 目录（KeyTool工具通常在此目录），执行命令生成的密钥对：spa

一、首先利用KeyTool工具来生成私匙库：（-alias别名 –validity 3650表示10年有效）.net

keytool -genkey -alias privatekey -keystoreprivateKeys.store -validity 3650

二、而后把私匙库内的公匙导出到一个文件当中：

keytool -export -alias privatekey -file certfile.cer -keystore privateKeys.store

三、而后再把这个证书文件导入到公匙库：

keytool -import -alias publiccert -file certfile.cer -keystore publicCerts.store

最后生成文件privateKeys.store、publicCerts.store拷贝出来备用。

2、生成证书（该部分代码由受权者独立保管执行）

一、首先是 LicenseManagerHolder.java 类

package cn.melina.license;
import de.schlichtherle.license.LicenseManager;
import de.schlichtherle.license.LicenseParam;
 
/**
 * LicenseManagerHolder 
 * @author melina
 */
public class LicenseManagerHolder {
    
    private static LicenseManager licenseManager;
 
    public static synchronized LicenseManager getLicenseManager(LicenseParam licenseParams) {
        if (licenseManager == null) {
            licenseManager = new LicenseManager(licenseParams);
        }
        return licenseManager;
    }
}

二、而后是主要生成 license 的代码 CreateLicense.java

package cn.melina.license;
 
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Properties;
import java.util.prefs.Preferences;
import javax.security.auth.x500.X500Principal;
import de.schlichtherle.license.CipherParam;
import de.schlichtherle.license.DefaultCipherParam;
import de.schlichtherle.license.DefaultKeyStoreParam;
import de.schlichtherle.license.DefaultLicenseParam;
import de.schlichtherle.license.KeyStoreParam;
import de.schlichtherle.license.LicenseContent;
import de.schlichtherle.license.LicenseParam;
import de.schlichtherle.license.LicenseManager;
 
/**
 * CreateLicense
 * @author melina
 */
public class CreateLicense {
    //common param
    private static String PRIVATEALIAS = "";
    private static String KEYPWD = "";
    private static String STOREPWD = "";
    private static String SUBJECT = "";
    private static String licPath = "";
    private static String priPath = "";
    //license content
    private static String issuedTime = "";
    private static String notBefore = "";
    private static String notAfter = "";
    private static String consumerType = "";
    private static int consumerAmount = 0;
    private static String info = "";
    // 为了方便直接用的API里的例子
    // X500Princal是一个证书文件的固有格式，详见API
    private final static X500Principal DEFAULTHOLDERANDISSUER = new X500Principal(
            "CN=Duke、OU=JavaSoft、O=Sun Microsystems、C=US");
    
    public void setParam(String propertiesPath) {
        // 获取参数
        Properties prop = new Properties();
        InputStream in = getClass().getResourceAsStream(propertiesPath);
        try {
            prop.load(in);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        PRIVATEALIAS = prop.getProperty("PRIVATEALIAS");
        KEYPWD = prop.getProperty("KEYPWD");
        STOREPWD = prop.getProperty("STOREPWD");
        SUBJECT = prop.getProperty("SUBJECT");
        KEYPWD = prop.getProperty("KEYPWD");
        licPath = prop.getProperty("licPath");
        priPath = prop.getProperty("priPath");
        //license content
        issuedTime = prop.getProperty("issuedTime");
        notBefore = prop.getProperty("notBefore");
        notAfter = prop.getProperty("notAfter");
        consumerType = prop.getProperty("consumerType");
        consumerAmount = Integer.valueOf(prop.getProperty("consumerAmount"));
        info = prop.getProperty("info");
        
    }
 
    public boolean create() {        
        try {
            /************** 证书发布者端执行 ******************/
            LicenseManager licenseManager = LicenseManagerHolder
                    .getLicenseManager(initLicenseParams0());
            licenseManager.store((createLicenseContent()), new File(licPath));    
        } catch (Exception e) {
            e.printStackTrace();
            System.out.println("客户端证书生成失败!");
            return false;
        }
        System.out.println("服务器端生成证书成功!");
        return true;
    }
 
    // 返回生成证书时须要的参数
    private static LicenseParam initLicenseParams0() {
        Preferences preference = Preferences
                .userNodeForPackage(CreateLicense.class);
        // 设置对证书内容加密的对称密码
        CipherParam cipherParam = new DefaultCipherParam(STOREPWD);
        // 参数1,2从哪一个Class.getResource()得到密钥库;参数3密钥库的别名;参数4密钥库存储密码;参数5密钥库密码
        KeyStoreParam privateStoreParam = new DefaultKeyStoreParam(
                CreateLicense.class, priPath, PRIVATEALIAS, STOREPWD, KEYPWD);
        LicenseParam licenseParams = new DefaultLicenseParam(SUBJECT,
                preference, privateStoreParam, cipherParam);
        return licenseParams;
    }
 
    // 从外部表单拿到证书的内容
        public final static LicenseContent createLicenseContent() {
            DateFormat format = new SimpleDateFormat("yyyy-MM-dd");
            LicenseContent content = null;
            content = new LicenseContent();
            content.setSubject(SUBJECT);
            content.setHolder(DEFAULTHOLDERANDISSUER);
            content.setIssuer(DEFAULTHOLDERANDISSUER);
            try {
                content.setIssued(format.parse(issuedTime));
                content.setNotBefore(format.parse(notBefore));
                content.setNotAfter(format.parse(notAfter));
            } catch (ParseException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            content.setConsumerType(consumerType);
            content.setConsumerAmount(consumerAmount);
            content.setInfo(info);
            // 扩展
            content.setExtra(new Object());
            return content;
        }
}

三、测试程序 licenseCreateTest.java

package cn.melina.license;
import cn.melina.license.CreateLicense;
public class licenseCreateTest {
    public static void main(String[] args){
        CreateLicense cLicense = new CreateLicense();
        //获取参数
        cLicense.setParam("./param.properties");
        //生成证书
        cLicense.create();
    }
}

四、生成时使用到的 param.properties 文件以下

##########common parameters###########
#alias
PRIVATEALIAS=privatekey
#key(该密码生成密钥对的密码，须要妥善保管，不能让使用者知道)
KEYPWD=bigdata123456
#STOREPWD(该密码是在使用keytool生成密钥对时设置的密钥库的访问密码)
STOREPWD=abc123456
#SUBJECT
SUBJECT=bigdata
#licPath
licPath=bigdata.lic
#priPath
priPath=privateKeys.store
##########license content###########
#issuedTime
issuedTime=2014-04-01
#notBeforeTime
notBefore=2014-04-01
#notAfterTime
notAfter=2014-05-01
#consumerType
consumerType=user
#ConsumerAmount
consumerAmount=1
#info
info=this is a license

根据properties文件能够看出，这里只简单设置了使用时间的限制，固然能够自定义添加更多限制。该文件中表示受权者拥有私钥，而且知道生成密钥对的密码。而且设置license的内容。

3、验证证书（使用证书）（该部分代码结合须要受权的程序一块儿使用）

一、首先 LicenseManagerHolder.java 类，同上。

二、而后是主要验证 license 的代码 VerifyLicense.java

package cn.melina.license;
 
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
import java.util.prefs.Preferences;
 
import de.schlichtherle.license.CipherParam;
import de.schlichtherle.license.DefaultCipherParam;
import de.schlichtherle.license.DefaultKeyStoreParam;
import de.schlichtherle.license.DefaultLicenseParam;
import de.schlichtherle.license.KeyStoreParam;
import de.schlichtherle.license.LicenseParam;
import de.schlichtherle.license.LicenseManager;
 
/**
 * VerifyLicense
 * @author melina
 */
public class VerifyLicense {
    //common param
    private static String PUBLICALIAS = "";
    private static String STOREPWD = "";
    private static String SUBJECT = "";
    private static String licPath = "";
    private static String pubPath = "";
    
    public void setParam(String propertiesPath) {
        // 获取参数
        Properties prop = new Properties();
        InputStream in = getClass().getResourceAsStream(propertiesPath);
        try {
            prop.load(in);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        PUBLICALIAS = prop.getProperty("PUBLICALIAS");
        STOREPWD = prop.getProperty("STOREPWD");
        SUBJECT = prop.getProperty("SUBJECT");
        licPath = prop.getProperty("licPath");
        pubPath = prop.getProperty("pubPath");
    }
 
    public boolean verify() {        
        /************** 证书使用者端执行 ******************/
 
        LicenseManager licenseManager = LicenseManagerHolder
                .getLicenseManager(initLicenseParams());
        // 安装证书
        try {
            licenseManager.install(new File(licPath));
            System.out.println("客户端安装证书成功!");
        } catch (Exception e) {
            e.printStackTrace();
            System.out.println("客户端证书安装失败!");
            return false;
        }
        // 验证证书
        try {
            licenseManager.verify();
            System.out.println("客户端验证证书成功!");
        } catch (Exception e) {
            e.printStackTrace();
            System.out.println("客户端证书验证失效!");
            return false;
        }
        return true;
    }
 
    // 返回验证证书须要的参数
    private static LicenseParam initLicenseParams() {
        Preferences preference = Preferences
                .userNodeForPackage(VerifyLicense.class);
        CipherParam cipherParam = new DefaultCipherParam(STOREPWD);
 
        KeyStoreParam privateStoreParam = new DefaultKeyStoreParam(
                VerifyLicense.class, pubPath, PUBLICALIAS, STOREPWD, null);
        LicenseParam licenseParams = new DefaultLicenseParam(SUBJECT,
                preference, privateStoreParam, cipherParam);
        return licenseParams;
    }
}

三、验证测试程序 licenseVerifyTest.java

package cn.melina.license;
 
public class licenseVerifyTest {
    public static void main(String[] args){
        VerifyLicense vLicense = new VerifyLicense();
        //获取参数
        vLicense.setParam("./param.properties");
        //验证证书
        vLicense.verify();
    }
}

四、验证时使用到的Properties文件

##########common parameters###########
#alias
PUBLICALIAS=publiccert
#STOREPWD(该密码是在使用keytool生成密钥对时设置的密钥库的访问密码)
STOREPWD=abc123456
#SUBJECT
SUBJECT=bigdata
#licPath
licPath=bigdata.lic
#pubPath
pubPath=publicCerts.store

根据该验证的properties能够看出，使用者只拥有公钥，没有私钥，而且也只知道访问密钥库的密码，而不能知道生成密钥对的密码。

4、参考资料

truelicense官网

https://sourceforge.net/projects/truelicense/

luckymelina专栏

https://blog.csdn.net/luckymelina/article/details/22870665

老张专栏（支持绑定MAC地址）

https://blog.csdn.net/jingshuaizh/article/details/44461289

做者：朝雨忆轻尘
出处：https://www.cnblogs.com/xifengxiaoma/ 版权全部，欢迎转载，转载请注明原文做者及出处。