How do I generate a signed applet to enable the applet to access local resources?

In jdk1.1, you can use the Javakey command to generate the public key, private key, certificate, and signature jar files, please refer to the details: Http://java.sun.com/security/usingJavakey.html and Java 2 The signature mechanism has been improved to allow users more flexibility to set security permissions. Java 2 provides three tools: Keytool,policytool and Jarsigner to implement a signed applet. For example, Joe writes a signature Applet:SignedApplet.java, so the process of producing a simple signed applet is as follows:

Generates the key, the key alias is Joe, the password is sign12, stored in the KeyStore joestore keytool-genkey-alias joe-keypass sign12-keystore //Will signedapplet. Class and related files are packaged into jar file jar CVF Signedappletdemo. Jar ///Generate Signed applet (JAR file) Jarsigner-keystore Joestore-signedjar Joe.jar with Keytool generated self-signed certificate Signedappletdemo.jar Joe //Export self-signed certificate from KeyStore to file keytool-export-keystore joestore -alias joe-file Joe.cer

For the recipient of the signed applet, Susan, you need to perform the following steps safely

Signed applet written by Joe:

Get Joe's certificate and read it into the KeyStore susanstore keytool-import-alias joe-file joe.cer-keystore susanstore // Run Policytool generate policy files that meet Susan's requirements Policytool //Run with Appletviewer, or install Java plugin in a browser.

For the deployment of a signed applet in the Java plugin, refer to the following Web page:

Http://java. Sun com/security/signexample12/

Note: For simplicity, the above example uses the self-signed certificate produced by Keytool. In fact, users can also use Keytool-certreq to apply for an electronic certificate to the commercial CA center.