No, the PPAs don't need new keys - we just need to upgrade the digest algorithm used for signing. See the bug of which I've just marked this as a duplicate.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1558331 Title: After upgrading to apt 1.2.7 in Xenial, PPAs and most other third- party repositories become unusable with "The repository is insufficiently signed by key (weak digest)" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1558331/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs