Signing Code and Granting It Permissions

Steps for the Code Signer

Download and Try the Sample Application

Create a JAR File Containing the Class File

Sign the JAR File

Export the Public Key Certificate

Steps for the Code Receiver

Observe the Restricted Application

Import the Certificate as a Trusted Certificate

Set Up a Policy File to Grant the Required Permission

Start Policy Tool

Specify the Keystore

Add a Policy Entry with a SignedBy Alias

Save the Policy File

See the Policy File Effects

Trail: Security Features in Java SE
Lesson: Signing Code and Granting It Permissions
Section: Steps for the Code Signer

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Create a JAR File Containing the Class File

Next, create a JAR file containing the Count.class file. Type the following in your command window:

jar cvf Count.jar Count.class

This creates a JAR file, Count.jar, and places the Count.class file inside it.

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