NixCon 2025

Hardening ssh sessions against quantum computers made easy with Nix(OS)
2025-09-06 , Aula

The possibility of sufficiently strong quantum computers is a potential threat to traditional key exchange mechanisms and some ciphers. Using strong ciphers and post quantum secure key exchange mechanisms aids in protecting ssh sessions from falling victim to “Harvest Now, Decrypt Later.” Learn how Nix(OS) can help make client and server configuration changes easier to adopt and help harden today’s ssh sessions against sufficiently strong quantum computers.

Travis has a masters degree in Computer Science from George Mason University and over 25 years of professional work experience and research experience in network and system security. He has a particular interest in system automation, distributed systems, and anonymous communications; as well as protecting anything under his purview from exploitation, harm, or loss, to include ssh sessions in transit between trusted end points.

Having observed peers vocalize angst over quantum computers and having spent time trying to understand the threat and mitigation prospects of quantum computers as it relates to ssh(d), he has identified easily adopted configuration changes for ssh and sshd leveraging Nix(OS) that can help reduce the threat of quantum computers to ssh sessions.