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. 
package org.bouncycastle.crypto.tls;

import java.io.IOException;


A temporary class to wrap old CertificateVerifyer stuff for new TlsAuthentication

Deprecated:
/**
 * A temporary class to wrap old CertificateVerifyer stuff for new TlsAuthentication
 * 
 * @deprecated
 */
public class LegacyTlsAuthentication implements TlsAuthentication
{
    protected CertificateVerifyer verifyer;

    public LegacyTlsAuthentication(CertificateVerifyer verifyer)
    {
        this.verifyer = verifyer;
    }

    public void notifyServerCertificate(Certificate serverCertificate) throws IOException
    {
        if (!this.verifyer.isValid(serverCertificate.getCerts()))
        {
            throw new TlsFatalAlert(AlertDescription.user_canceled);
        }
    }

    public TlsCredentials getClientCredentials(CertificateRequest certificateRequest)
        throws IOException
    {
        return null;
    }
}