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.est.jcajce;


import java.net.Socket;


Channel Binding Provider provides a method of extracting the
ChannelBinding that can be customised specifically for the provider.
Presently JSSE does not support RFC 5920.


See https://bugs.openjdk.java.net/browse/JDK-6491070

/**
 * Channel Binding Provider provides a method of extracting the
 * ChannelBinding that can be customised specifically for the provider.
 * Presently JSSE does not support RFC 5920.
 * <p>
 * See https://bugs.openjdk.java.net/browse/JDK-6491070
 */
public interface ChannelBindingProvider
{
    boolean canAccessChannelBinding(Socket sock);

    byte[] getChannelBinding(Socket sock, String binding);
}