http://www.bouncycastle.org/java.html: The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.8.
  • The Legion of the Bouncy Castle Inc. 
package org.bouncycastle.jcajce.provider.asymmetric;

import org.bouncycastle.jcajce.provider.config.ConfigurableProvider;
import org.bouncycastle.jcajce.provider.util.AsymmetricAlgorithmProvider;


For some reason the class path project thinks that such a KeyFactory will exist.

/**
 * For some reason the class path project thinks that such a KeyFactory will exist.
 */
public class X509
{
    public static class Mappings
        extends AsymmetricAlgorithmProvider
    {
        public Mappings()
        {

        }

        public void configure(ConfigurableProvider provider)
        {
            provider.addAlgorithm("KeyFactory.X.509", "org.bouncycastle.jcajce.provider.asymmetric.x509.KeyFactory");
            provider.addAlgorithm("Alg.Alias.KeyFactory.X509", "X.509");

            //
            // certificate factories.
            //
            provider.addAlgorithm("CertificateFactory.X.509", "org.bouncycastle.jcajce.provider.asymmetric.x509.CertificateFactory");
            provider.addAlgorithm("Alg.Alias.CertificateFactory.X509", "X.509");
        }
    }
}