Testing Java Cryptography Extension (JCE) is installed

If JCE is already installed, you should see on that the jar files ‘local_policy.jar’ and ‘US_export_policy.jar’ are on $JAVA_HOME/jre/lib/security/

But, we can test it:

import javax.crypto.Cipher;
import java.security.*;
import javax.crypto.*;

class TestJCE {
 public static void main(String[] args) {
 boolean JCESupported = false;
 try {
    KeyGenerator kgen = KeyGenerator.getInstance("AES", "SunJCE");
    JCESupported = true;
 } catch (NoSuchAlgorithmException e) {
    JCESupported = false;
 } catch (NoSuchProviderException e) {
    JCESupported = false;
    System.out.println("JCE Supported=" + JCESupported);

To compile (assuming file name is TestJCE.java):

$ javac TestJCE.java

Previous command will create TestJCE.class output file.

To Interpreting and Running the program:

$ java TestJCE


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s