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.cms;

import org.bouncycastle.operator.OperatorCreationException;

public interface SignerInformationVerifierProvider
{
    
Return a SignerInformationVerifierProvider suitable for the passed in SID.

Params:
  • sid – the SignerId we are trying to match for.
Throws:
Returns: a verifier if one is available, null otherwise.
/**
     * Return a SignerInformationVerifierProvider suitable for the passed in SID.
     *
     * @param sid the SignerId we are trying to match for.
     * @return  a verifier if one is available, null otherwise.
     * @throws OperatorCreationException if creation of the verifier fails when it should suceed.
     */
    public SignerInformationVerifier get(SignerId sid)
          throws OperatorCreationException;
}