Linux Foundation UEFI Secure Boot System for Open Source(linuxfoundation.org)
linuxfoundation.org
Linux Foundation UEFI Secure Boot System for Open Source
http://www.linuxfoundation.org/news-media/blogs/browse/2012/10/linux-foundation-uefi-secure-boot-system-open-source
Some discussion on lwn.net here: http://lwn.net/Articles/519244/
It seems very similar to the SuSE solution, except that it uses the UEFI key store rather than its own separate key store. The main downside is that if you want a key for loader.efi added (so you don't have to say "yes, I really want to run this" each time you boot), you have to put UEFI into setup mode and the interface for doing so depends on the motherboard. So SuSE's is nicer from a UI standpoint but it puts keys in two locations, while this one is uglier from a UI standpoint but it keeps all keys within a single UEFI store.