Debian - Repositories GPG keys

The GPG keys for Debian repositories are listed at https://ftp-master.debian.org/keys.html. Their expiration dates overlap in term of years from 1 version to the next version. These overlaps help ease the upgrade transition from 1 version to another version.

Here is how I add GPG keys in my Debian 10 Buster.

# For regular repositories.
    # Debian 9.
    wget -O - https://ftp-master.debian.org/keys/archive-key-9.asc \
        | gpg --no-default-keyring --keyring /etc/apt/trusted.gpg --import
 
    # Debian 10.
    wget -O - https://ftp-master.debian.org/keys/archive-key-10.asc \
        | gpg --no-default-keyring --keyring /etc/apt/trusted.gpg --import
 
# For repositories with security updates.
    # Debian 9.
    wget -O - https://ftp-master.debian.org/keys/archive-key-9-security.asc \
        | gpg --no-default-keyring --keyring /etc/apt/trusted.gpg --import
 
    # Debian 10.
    wget -O - https://ftp-master.debian.org/keys/archive-key-10-security.asc \
        | gpg --no-default-keyring --keyring /etc/apt/trusted.gpg --import

Debian, Debian Buster

About the author

Xuan Ngo is the founder of OpenWritings.net. He currently lives in Montreal, Canada. He loves to write about programming and open source subjects.