In addition to however OpenSSL does it, you can see how it’s done here: https://metacpan.org/release/Crypt-Perl/source/lib/Crypt/Perl/X509/Extension/ct_precert_scts.pm https://metacpan.org/release/Crypt-Perl/source/lib/Crypt/Perl/X509/Extension/ct_precert_poison.pm -F > On Jan 10, 2021, at 12:21 PM, Richard Simard <richard.simard@xxxxxxxxxxxxx> wrote: > > I would like to know if among you, if anyone would have a good example in order to integrate a Certificates Transparency list into my certificates. > > Tank You! > Richard Simard >