Peter Jones of Red Hat has an interesting post on Linux, UEFI, Secure Boot, and Linux shim maintenance.
If you use Linux and it’s UEFI Secure Boot shim, you may want to read this.
http://blog.uncooperative.org/blog/2015/11/02/shim-info/
http://blog.uncooperative.org/shim-info-2015-11-02.txt.asc