Hacker News

points by a-squirrel-comm 4 days ago | 0 comments

It looks like today there was maintenance scheduled to deprecate support for certain categories of SSH keys: https://github.blog/changelog/2026-09-22-security-improvemen...

> November 4, 2026: We’ll have a brownout of the removal of the ssh-rsa signature type (i.e., RSA keys using SHA-1) and the diffie-hellman-group-exchange-sha256 key exchange algorithm.

I guess something went sideways.

[–] qtqtqt 4 days ago

How to check if one's SSH keys are still compatible?

[–] dist-epoch 4 days ago

if any of your SSH key files are bigger than 500 bytes, you should rotate them

[–] mschuster91 4 days ago

EC keys should be much smaller... this is only valid for id_rsa SSH keys

[–] anamexis 4 days ago

That’s the point.

[–] matja 4 days ago

Even mldsa44-ed25519?

[–] SkiFire13 4 days ago

Bigger or smaller?

[–] igleria 4 days ago

hey how much do I owe you for this INCREDIBLY important information? This is not sarcasm btw.

[–] a-squirrel-comm 4 days ago

nothing :) hope they'll release a statement soon, this is was an assumption on my side, it might be totally wrong. I had intermittent issues with basic git pull/push ops locally so I went to dig a bit. ps: if you do have money to spare, consider donating to the EFF (https://www.eff.org) though B)

[–] DanielHB 4 days ago

hah I was wondering why I was getting invalid key errors from github

[–] igleria 4 days ago

thanks a bunch! will do.

[–] pksunkara 3 days ago

If this is truly the cause of the outage, then the incident looks like a result of GitHub's own vibecoding instead of the increase in usage.

Disclaimer: I am building a code forge myself

[–] shawabawa3 3 days ago

That's not a disclaimer it's just an ad