Weak cryptographic standards removal notice
Last year we announced the deprecation of several weak cryptographic standards. Then we provided a status update toward the end of last year outlining some changes we’d made to make…
Last year we announced the deprecation of several weak cryptographic standards. Then we provided a status update toward the end of last year outlining some changes we’d made to make the transition easier for clients. We quickly approached the February 1, 2018 cutoff date we mentioned in previous posts and, as a result, pushed back our schedule by one week. On February 8, 2018 we’ll start disabling the following:
TLSv1/TLSv1.1: This applies to all HTTPS connections, including web, API, and git connections to https://github.com and https://api.github.com.diffie-hellman-group1-sha1: This applies to all SSH connections to github.comdiffie-hellman-group14-sha1: This applies to all SSH connections to github.com
We’ll disable the algorithms in two stages:
- February 8, 2018 19:00 UTC (11:00 am PST): Disable deprecated algorithms for one hour
- February 22, 2018 19:00 UTC (11:00 am PST): Permanently disable deprecated algorithms
For more details, head to the Engineering Blog.
Written by
Related posts
GitHub Universe 2026: Evolving every layer of the stack
Today, we laid out our vision for GitHub as the most comprehensive, end-to-end software delivery system in the world.
Octoverse: Commits, pushes, reach new highs in 2026 as developers build with agents
See how a record year of growth reached every industry, every field, and every kind of builder in the 2026 Octoverse report.
The next developer interface is ambient intelligence
AI, agents, voice, and physical controls are shifting software development from operating tools to expressing intent—and helping developers stay focused on building.