bouncycastle provider can't find classes needed for algorithm

Question

I\'m trying to use bouncycastle to encrypt a file using a public key. I\'ve registered the provider programatically:

Security.addProvider(new BouncyCastlePro         


        

Answer 1

You have a BouncyCastle Security provider installation problem, you need to either

• Add BouncyCastle to the JRE/JDK $JAVA_HOME/jre/lib/security/java.security file as a provider (be sure that you add it to the JRE you use when running, eg. if you have multiple JRE's/JDK's installed)

eg.

security.provider.2=org.bouncycastle.jce.provider.BouncyCastleProvider

(and renumber the security providers below it - don't put it as the highest priority provider).

• or you can add BouncyCastle programmatically, as you were trying to do above, but in this case the security policy $JAVA_HOME/jre/lib/security/java.policy should be "unlimited" (you can probably download an unlimited policy file from the Java homepage).

Answer 2

You need to add javapns.jar and bcprove-jdk15on-1.47.jar file in your lib folder

import javapns.Push;

import org.apache.log4j.BasicConfigurator;

public class SendPushNotification {

  public static void main(String[] args) {

    try {

        BasicConfigurator.configure();
        Push.alert("Hello World!", "Cetificate.p12", "password", false,
                "mydeviceToken");

    } catch (Exception e) {
        System.out.println(e);
    }

   }

}

Answer 3

In my case it worked fine one time, but then later I got ClassNotFoundException when trying to use BC. I restarted Tomcat and then it worked fine.

I think if you redeploy the app, like you do often while developing, it stops working. JNI is another thing which suffers from this problem.

In our case this isn't a problem. We never redeploy on the test and production systems. I prefer shipping the jar with the app instead of having to manually copy it to the container lib directory.