Use: $ apt-key adv --keyserver ha.pool.sks-keyservers.net --recv-keys B188E2B695BD4743
It was discussed on this list last month... https://bird.network.cz/pipermail/bird-users/2020-February/014246.html On 3/5/20 12:13 PM, Petr Boltík wrote: > Hi, please check pubkey for your debian repository. No valid pubkey > found. Regards Petr > > Debian 10.3 > installation from https://bird.network.cz/?download&tdir=debian/ > > apt-key add - ..... OK > ~# apt update > Err:2 http://bird.network.cz/debian buster InRelease > The following signatures couldn't be verified because the public key > is not available: NO_PUBKEY B188E2B695BD4743 > Reading package lists... Done > W: GPG error: http://bird.network.cz/debian buster InRelease: The > following signatures couldn't be verified because the public key is not > available: NO_PUBKEY B188E2B695BD4743 > E: The repository 'http://bird.network.cz/debian buster InRelease' is > not signed.