Final answer:
Elton should use the Online Certificate Status Protocol (OCSP) for real-time lookup of a digital certificate's status, as it provides prompt and efficient certificate verification.
Step-by-step explanation:
If Elton needs his application to perform a real-time lookup of a digital certificate's status, he would use the Online Certificate Status Protocol (OCSP). OCSP allows applications to query a certificate authority (CA) in real time to get the revocation status of a specific digital certificate without having to download a full Certificate Revocation List (CRL). OCSP is a more efficient alternative, particularly for systems where timely and frequent status checks are necessary.
Elton would use the Online Certificate Status Protocol (OCSP) to perform a real-time lookup of a digital certificate's status.
OCSP is a protocol that allows applications to determine if a certificate has been revoked by checking its status with the Certificate Authority (CA) in real-time.
Using OCSP, Elton's application can check the validity of digital certificates without relying on outdated Certificate Revocation Lists (CRLs) which may not be up-to-date.