Protect Java Library

Protect Java Library with GUI Tool

Go to the Protector4J folder, execute p4j-ui[.exe], you will see the following user interface.

For macOS users, simply double-click on Protector4J.app like a regular Mac application.

Login

If you have already purchased the license, please click on the login button in the upper right corner and input your user information. If you do not have a license, you can still try out this tool.

The Java library protection feature requires the Enterprise edition.

Selection Application Type

Click on the "Java Library" button on the application type page

Select the jar/war file that needs to be encrypted

Select the jar/war files you want to encrypt, you can select one or multiple files

Specify the method to encrypt

On this page you can select the method to encrypt

You can select the classes and methods that need protection from the structure directory on the right, or you can manually enter the items that need protection in the following format.

# Protect a method
# Class name.method name&method signature
Hello.hello&()V
# Protect all methods under the class
# Directly input the class name
Hello

You can enter the content to be excluded in the Items to exclude using the same format.

Protect Java Library with CLI Tool

Configuration file

CLI tool need to specify a task file as a parameter.

Go to the protector4j/task-templates folder, find java-lib-task.yml, copy and modify one.

# The jar files that need to be encrypted
jarFiles: []

# Protect a method: MethodName&MethodSignature, like io.test.Hello.hello&()V
# Protect all methods in a Class: ClassName, like io.test.Hello
itemsToProtect: []

# Exclude items that are not encrypted in the same format as itemsToProtect.
itemsToExclude: []


# The output folder
outputFolder: ''

# Create a new and unique folder for the application, the folder name is like p4j-<taskId>
createNewFolder: true

Excute encryption task

Go to the Protector4J folder and execute the following command.

Linux or macOS

For macOS users, you can find the CLI tool at /Applictions/Protector4J.app/Contents/protector4j-mac.

./p4j -t java-lib -f path-of-task-file -u email -p password

Windows

p4j -t java-lib -f path-of-task-file -u email -p password

You can execute p4j --help to view the detailed parameters.