The 2021 signing key for apt.kitware.com, which was generated and posted several weeks ago, has now replaced the 2020 key as the primary signing key. Both the repository signature and the
kitware-archive-latest.asc file have been updated to reflect this.
As a reminder, we recommend installing the
kitware-archive-keyring package, which will keep your keys up to date as we rotate them on an annual basis.