Cybersecurity
21 Sep 2026
6 min read
SSH Certificates Shift Access Trust to a Signing Authority
SSH Certificates Shift Access Trust to a Signing Authority Public-key SSH access often starts with a simple mapping: place a user’s public key in authorized_keys, keep the private key with the user, and let the server accept possession of the matching private key. The model is direct and effective, but its administrative cost rises as people and hosts multiply. Every host can become another place where access state must be added, audited, and removed.