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.keystore;

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

public class PKCS12
{
    private static final String PREFIX = "org.bouncycastle.jcajce.provider.keystore" + ".pkcs12.";

    public static class Mappings
        extends AsymmetricAlgorithmProvider
    {
        public Mappings()
        {
        }
        
        public void configure(ConfigurableProvider provider)
        {
            provider.addAlgorithm("KeyStore.PKCS12", PREFIX + "PKCS12KeyStoreSpi$BCPKCS12KeyStore");
            provider.addAlgorithm("KeyStore.BCPKCS12", PREFIX + "PKCS12KeyStoreSpi$BCPKCS12KeyStore");
            provider.addAlgorithm("KeyStore.PKCS12-DEF", PREFIX + "PKCS12KeyStoreSpi$DefPKCS12KeyStore");

            provider.addAlgorithm("KeyStore.PKCS12-3DES-40RC2", PREFIX + "PKCS12KeyStoreSpi$BCPKCS12KeyStore");
            provider.addAlgorithm("KeyStore.PKCS12-3DES-3DES", PREFIX + "PKCS12KeyStoreSpi$BCPKCS12KeyStore3DES");
    
            provider.addAlgorithm("KeyStore.PKCS12-DEF-3DES-40RC2", PREFIX + "PKCS12KeyStoreSpi$DefPKCS12KeyStore");
            provider.addAlgorithm("KeyStore.PKCS12-DEF-3DES-3DES", PREFIX + "PKCS12KeyStoreSpi$DefPKCS12KeyStore3DES");
        }
    }
}