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ubuntudebianrepositoryadditionapt

Ubuntu Repositories on Debian

I'm was trying to add Ubuntu repository on Debian, but get an error:

Err:11 https://mirrors.ustc.edu.cn/ubuntu focal InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C

How to fix it?

Solution

  • theoretically you can import the missing GPG key to Debian but it is a bad idea.
    to import the missing keys to Debian you must go:

    sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3B4FE6ACC0B21F32 
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 871920D1991BC93C

    normally you should check out there always is the same package also in a Debian repository. Best solution is to add the right Debian repositories.