This flag defines if Online Certificate Status must be checked
for revoked certificates. Using this parameter requires
LWP::UserAgent and HTTP::Request
Perl modules.
Here are the requirements for using OCSP
parameters:
OpenSSL 1.0.0 or later
Net::SSLeay 1.59 or later. Net::SSLeay 1.82 or later is
recommended.
If you use TLS_OCSPStapling,
Net::SSLeay 1.82 or later is required.