Part of lp.archivepublisher
UEFI Secure Boot requires boot loader images to be signed, and we want to have signed images in the archive so that they can be used for upgrades. This cannot be done on the build daemons because they are insufficiently secure to hold signing keys, so we sign them as a custom upload instead.
| Class | SigningUploadPackError | Undocumented |
| Class | SigningUpload | Signing custom upload. |
| Class | UefiUpload | Legacy UEFI Signing custom upload. |