Ubuntu 24.04 : Signature by key uses weak algorithm

[admike82]

Hi,
when i do "sudo apt update", i have this message :

w: https://ppa.launchpadcontent.net/ondrej/php/ubuntu/dists/noble/InRelease: Signature by key 14AA40EC0831756756D7F66C4F4EA0AAE5267A6C uses weak algorithm (rsa1024)

Have a good day

[oerdnj]

#1429

[workmailrahul]

Got the same issue

[pausasilva]

Does anyone solved this problem or know how to solve it?

[kodmanyagha]

sudo nano /etc/apt/apt.conf.d/99weakkey-warning

Paste this to here:

APT::Key::Assert-Pubkey-Algo ">=rsa1024";

Source: sabnzbd/sabnzbd#2845

[pausasilva]

Thank you so much @kodmanyagha , its helpeds me a lot.

[bfontaine]

@pausasilva it does not solve the issue; it just makes the warning disappear.

[blakethepatton]

Fixed the warning on my system by removing and re-adding the ppa.

sudo add-apt-repository --remove ppa:ondrej/php
sudo add-apt-repository ppa:ondrej/php

Your ppa name may vary as you might have the nginx or apache or gearman version.

This is based on what Guruprasad (lgp171188) said over on launchpads support forum.

All the affected Launchpad PPAs have been signed with a more secure key and Launchpad now serve that key. So for fixing this issue for PPAs already added to a system, just remove and re-add them.

[abs2310]

Thanks @blakethepatton your solution helped to remove and re-add the repo.