Migrating the Launchpad Keyservers from SKS to Hockeypuck
Ubuntu and Launchpad use OpenPGP keys heavily. Each source package is signed with the uploader’s key, and binary and source package downloads from Ubuntu’s primary archives and from users’ Personal Package Archives (PPAs) are indirectly signed by the publisher process with per-archive keys of its own. Access to Launchpad’s bug-manipulation interface is also controlled by OpenPGP. As a result, Launchpad needs a reliable key-storage and synchronization mechanism.