http://www.bouncycastle.org/java.html: The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.5 to JDK 1.8. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.
  • The Legion of the Bouncy Castle Inc. 
package org.bouncycastle.cert.jcajce;

import java.io.IOException;
import java.security.cert.CertificateEncodingException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;

import org.bouncycastle.cert.X509CertificateHolder;
import org.bouncycastle.util.CollectionStore;


Class for storing Certificates for later lookup.


The class will convert X509Certificate objects into X509CertificateHolder objects.



/**
 * Class for storing Certificates for later lookup.
 * <p>
 * The class will convert X509Certificate objects into X509CertificateHolder objects.
 * </p>
 */
public class JcaCertStore
    extends CollectionStore
{
    
Basic constructor.

Params:
  • collection – - initial contents for the store, this is copied.
/**
     * Basic constructor.
     *
     * @param collection - initial contents for the store, this is copied.
     */
    public JcaCertStore(Collection collection)
        throws CertificateEncodingException
    {
        super(convertCerts(collection));
    }

    private static Collection convertCerts(Collection collection)
        throws CertificateEncodingException
    {
        List list = new ArrayList(collection.size());

        for (Iterator it = collection.iterator(); it.hasNext();)
        {
            Object o = it.next();

            if (o instanceof X509Certificate)
            {
                X509Certificate cert = (X509Certificate)o;

                try
                {
                    list.add(new X509CertificateHolder(cert.getEncoded()));
                }
                catch (IOException e)
                {
                    throw new CertificateEncodingException("unable to read encoding: " + e.getMessage());
                }
            }
            else
            {
                list.add((X509CertificateHolder)o);
            }
        }

        return list;
    }
}