OpenSSH 8.8 RSA encryption stopped working

Heiko Tietze heiko.tietze at
Thu Sep 30 14:27:24 UTC 2021

After updating Arch Linux these days I run into the issue that Gerrit refused my 
patches. That's caused by OpenSSH update to 8.8 where RSA-SSH encryption was 
disabled [1]. There are two solutions:

a) "ssh-keygen -t ed25519" and upload this key to Gerrit [2]
b) allow the deprecated cypher in the ~/.ssh/config per
    "PubkeyAcceptedKeyTypes +ssh-rsa"

The second method works until Debian stops supporting RSA.



Dr. Heiko Tietze, UX-Designer and UX-Mentor
Tel: +49 30 5557992-63 | Mail: heiko.tietze at
The Document Foundation, Kurfürstendamm 188, 10707 Berlin, DE
Gemeinnützige rechtsfähige Stiftung des bürgerlichen Rechts
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