Private PKI: a hands-on deployment guide

From foundations to a working learning environment

This guide connects the concepts in my certificate, PKI and HSM notes to a private certificate-authority setup using Step-CA.

The intended setting is a lab with separate Debian-based CA and client environments, suitable network connectivity and administrative access.

The implementation path

The guide covers CA initialization, service-account and ownership configuration, systemd integration and ACME-based certificate issuance.

The purpose is to understand the interaction between issuance, private trust and client integration, not simply to generate a certificate file.

Review boundaries

A lab setup is not automatically a production architecture. Root key protection, issuer authorization, renewal, revocation, monitoring and recovery need explicit design and testing.

See the PKI case study for architectural context and the link below for implementation details. HSM-backed integration is not claimed as part of this lab.