Do existing RSA SSH keys need to be replaced for GitHub's 2026 changes?
Not necessarily. GitHub says existing RSA keys can continue when the SSH client signs with RSA/SHA-2. The new 3072-bit minimum applies to RSA keys uploaded after Oct. 14, 2026; test the actual client and signature negotiation before replacing established keys.
Answered in
GitHub’s SSH Brownout Starts Nov. 4: Check the Client Before Replacing KeysGitHub is phasing out older SSH signatures and key exchange; distinguish RSA key files from the SHA-1 signature algorithm before changing access.
Read the full analysisOther questions this article answers
More tech questions
- Does GitHub public monitoring scan an enterprise’s private repositories?
- How does GitHub attribute a public secret to a data-residency enterprise?
- Who can use public monitoring with data residency?
- Does IBM Unified Key Orchestrator for Secure Room Operation make an organization post-quantum secure?
- What does dual control mean in secure key operations?
- Where should an organization begin a post-quantum migration?
- What does a forward-deployed engineer do on an AI project?
- Does a one-gigawatt virtual power plant generate one gigawatt of electricity?
Every answer on Crashtech is written by the editor of the article it comes from — never auto-summarised. Browse all answers or the Tech beat.