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README
Apache-2.0

ClassFinal

介绍

ClassFinal是一款java class文件安全加密工具,支持直接加密jar包或war包,无需修改任何项目代码,兼容spring-framework;可避免源码泄漏或字节码被反编译。 此工具是在前辈(gitee/Mr.K)的项目基础上做的改进升级,无意侵权,如有侵权请联系'lcm742320521@163.com'删除

源Gitee: https://gitee.com/roseboy/classfinal
现Gitee: https://gitee.com/lcm742320521/class-final

项目模块说明

  • classfinal-core: ClassFinal的核心模块,几乎所有加密的代码都在这里;
  • classfinal-fatjar: ClassFinal打包成独立运行的jar包;
  • classfinal-maven-plugin: ClassFinal加密的maven插件;

功能特性

  • 无需修改原项目代码,只要把编译好的jar/war包用本工具加密即可。
  • 运行加密项目时,无需修改tomcat,spring等源代码。
  • 支持普通jar包、springboot jar包以及普通java web项目编译的war包。
  • 支持spring framework、swagger等需要在启动过程中扫描注解或生成字节码的框架。
  • 支持maven插件,添加插件后在打包过程中自动加密。
  • 支持加密WEB-INF/lib或BOOT-INF/lib下的依赖jar包。
  • 支持绑定机器,项目加密后只能在特定机器运行。
  • 支持加密springboot的配置文件。
  • 支持 solon jar包加密(只支持solon-maven-plugin打包方式的加密)。

环境依赖

JDK 1.8 +

使用说明

下载

点此下载

加密

执行以下命令

java -jar classfinal-fatjar.jar -file yourpaoject.jar -libjars a.jar,b.jar -packages com.yourpackage,com.yourpackage2 -exclude com.yourpackage.Main -pwd 123456 -Y
参数说明
-file        加密的jar/war完整路径
-packages    加密的包名(可为空,多个用","分割。注意包名应包含所有要加密的class文件的包名,包括libjars中的)
-libjars     jar/war包lib下要加密jar文件名(可为空,多个用","分割)
-cfgfiles    需要加密的配置文件,一般是classes目录下的yml或properties文件(可为空,多个用","分割)
-exclude     排除的类名(可为空,多个用","分割)
-classpath   外部依赖的jar目录,例如/tomcat/lib(可为空,多个用","分割)
-pwd         加密密码,如果是#号,则使用无密码模式加密
-code        机器码,在绑定的机器生成,加密后只可在此机器上运行
-Y           无需确认,不加此参数会提示确认以上信息

结果: 生成 yourpaoject-encrypted.jar,这个就是加密后的jar文件;加密后的文件不可直接执行,需要配置javaagent。

注: 以上示例是直接用参数执行,也可以直接执行 java -jar classfinal-fatjar.jar按照步骤提示输入信息完成加密。

maven插件方式

在要加密的项目pom.xml中加入以下插件配置,目前最新版本是:1.4.1。

<plugin>
    <!-- https://gitee.com/lcm742320521/class-final -->
    <groupId>com.gitee.lcm742320521</groupId>
    <artifactId>classfinal-maven-plugin</artifactId>
    <version>1.4.1</version>
    <configuration>
        <libjars>a.jar,b.jar</libjars>
        <packages>com.yourpackage,com.yourpackage2</packages>
        <cfgfiles>*.yml</cfgfiles>
        <excludes>org.spring</excludes>
        <password>#</password><!--加密打包之后pom.xml会被删除,不用担心在jar包里找到此密码-->
    </configuration>
    <executions>
        <execution>
            <phase>package</phase>
            <goals>
                <goal>classFinal</goal>
            </goals>
        </execution>
    </executions>
</plugin>

运行mvn package时会在target下自动加密生成yourpaoject-encrypted.jar。

maven插件的参数名称与直接运行的参数相同,请参考上节的参数说明。

无密码模式

加密时-pwd参数设为#,启动时可不用输入密码; 如果是war包,启动时指定参数 -nopwd,跳过输密码过程。

机器绑定

机器绑定只允许加密的项目在特定的机器上运行;

在需要绑定的机器上执行以下命令,生成机器码

java -jar classfinal-fatjar.jar -C

加密时用-code指定机器码。机器绑定可同时支持机器码+密码的方式加密。

启动加密后的jar

加密后的项目需要设置javaagent来启动,项目在启动过程中解密class,完全内存解密,不留下任何解密后的文件。

解密功能已经自动加入到 yourpaoject-encrypted.jar中,所以启动时-javaagent与-jar相同,不需要额外的jar包。

启动jar项目执行以下命令:

java -javaagent:yourpaoject-encrypted.jar='-pwd 0000000' -jar yourpaoject-encrypted.jar

//参数说明
// -pwd      加密项目的密码  
// -pwdname  环境变量中密码的名字

或者不加pwd参数直接启动,启动后在控制台里输入密码,推荐使用这种方式:

java -javaagent:yourpaoject-encrypted.jar -jar yourpaoject-encrypted.jar

使用nohup命令启动时,如果系统支持gui,会弹出输入密码的界面,如果是纯命令行下,不支持gui,则需要在同级目录下的classfinal.txt或yourpaoject-encrypted.classfinal.txt中写入密码,项目读取到密码后会清空此文件。

密码读取顺序已经改为:参数获取密码||环境变量获取密码||密码文件获取密码||控制台输入密码||GUI输入密码||退出

tomcat下运行加密后的war

将加密后的war放在tomcat/webapps下, tomcat/bin/catalina 增加以下配置:

//linux下 catalina.sh
CATALINA_OPTS="$CATALINA_OPTS -javaagent:classfinal-fatjar.jar='-pwd 0000000'";
export CATALINA_OPTS;

//win下catalina.bat
set JAVA_OPTS="-javaagent:classfinal-fatjar.jar='-pwd 000000'"

//参数说明 
// -pwd      加密项目的密码  
// -nopwd    无密码加密时启动加上此参数,跳过输密码过程
// -pwdname  环境变量中密码的名字

本工具使用AES算法加密class文件,密码是保证不被破解的关键,请保存好密码,请勿泄漏。

密码一旦忘记,项目不可启动且无法恢复,请牢记密码。

本工具加密后,原始的class文件并不会完全被加密,只是方法体被清空,保留方法参数、注解等信息,这是为了兼容spring,swagger等扫描注解的框架; 方法体被清空后,反编译者只能看到方法名和注解,看不到方法的具体内容;当class被classloader加载时,真正的方法体会被解密注入。

为了保证项目在运行时的安全,启动jvm时请加参数: -XX:+DisableAttachMechanism 。

版本说明

  • v1.4.1 适配 Java8、11、17、21 等LTS版本
  • v1.4.0 适配加密Solon项目
  • v1.3.0 bug修复
  • v1.2.9 适配加密微服务项目
  • v1.2.1 bug修复
  • v1.2.0 packages、libjars、cfgfiles、exclude 参数增加通配符功能
  • v1.1.7 支持加密springboot的配置文件;增加环境变量中读取密码
  • v1.1.6 增加机器绑定功能
  • v1.1.5 增加无密码加密方式,启动无需输密码,但是并不安全
  • v1.1.4 纯命令行下运行jar时,从配置文件中读取密码,读取后清空文件
  • v1.1.3 加入输入密码的弹框
  • v1.1.2 修复windows下加密后不能启动的问题
  • v1.1.1 启动jar时在控制台输入密码,无需将密码放在参数中
  • v1.1.0 加密jar包时将解密代码加入加密后的jar包,无需使用多余的jar文件
  • v1.0.0 第一个正式版发布

协议声明

Apache-2.0

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