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UEFI shim loader
C C++ Other
Pull request Compare This branch is even with rhinstaller:mok.
Latest commit 0aee67a Matthew Garrett Add comments
Failed to load latest commit information.
Cryptlib Remove temp file checked in by accident
COPYRIGHT Add copyright file
MokManager.c Fix up some types
PeImage.h dos2unix PeImage.h
README Add basic documentation
dbx.S Initialize the size of vendor dbx as 0
shim.c Add comments
shim.h Switch to using db format for MokList and MokNew
signature.h Switch to using db format for MokList and MokNew


shim is a trivial EFI application that, when run, attempts to open and
execute another application. It will initially attempt to do this via the
standard EFI LoadImage() and StartImage() calls. If these fail (because secure
boot is enabled and the binary is not signed with an appropriate key, for
instance) it will then validate the binary against a built-in certificate. If
this succeeds and if the binary or signing key are not blacklisted then shim
will relocate and execute the binary.

shim will also install a protocol which permits the second-stage bootloader
to perform similar binary validation. This protocol has a GUID as described
in the shim.h header file and provides a single entry point. On 64-bit systems
this entry point expects to be called with SysV ABI rather than MSABI, and
so calls to it should not be wrapped.

To use shim, simply place a hex dump of the public certificate in cert.h
and build it with make.
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