This port contains the Smallstep step-ca certificates component

It can be used together with the Smallstep step-ca client.
step-ca is a local CA. It can be used to create your own local PKI
Infrastructure and includes things like e.g. the possibility to have your
own ACME server.

A private certificate authority (X.509 & SSH) & ACME server for secure
automated certificate management, so you can use TLS everywhere & SSO for SSH.

WWW: https://smallstep.com/certificates/