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;


TLSUniqueProvider implementation of this can provide the TLS unique value.

/**
 * TLSUniqueProvider implementation of this can provide the TLS unique value.
 */
public interface TLSUniqueProvider
{
    
Return true if a TLS unique value should be available.

Returns:true if a TLS unique should be available, false otherwise.
/**
     * Return true if a TLS unique value should be available.
     *
     * @return true if a TLS unique should be available, false otherwise.
     */
    boolean isTLSUniqueAvailable();

    
Return the TLS unique value.

Returns:a TLS unique value.
/**
     * Return the TLS unique value.
     *
     * @return a TLS unique value.
     */
    byte[] getTLSUnique();
}