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Peter Jones 6b4255de12 vendor_cert_size's size in the binary should be 4, not -4.
The thing about subtraction is that the minuend needs to be before the
subtrahend in the text.

Signed-off-by: Peter Jones <pjones@redhat.com>
2013-06-10 17:35:33 -04:00
Cryptlib Make sure all the Makefiles use the same arguments for mmx/sse/ms_abi. 2013-06-10 16:38:05 -04:00
cert.S vendor_cert_size's size in the binary should be 4, not -4. 2013-06-10 17:35:33 -04:00
COPYRIGHT Add copyright file 2012-07-09 11:03:12 -04:00
dbx.S vendor_cert_size's size in the binary should be 4, not -4. 2013-06-10 17:35:33 -04:00
fallback.c Fix some minor type errors. 2013-05-15 13:37:15 -04:00
make-certs Sign MokManager with a locally-generated key 2012-11-26 13:43:50 -05:00
Makefile Remove FALLBACK_OBJS during clean as well. 2013-06-10 17:34:55 -04:00
MokManager.c Make sure the menu shows when the callback fails 2013-01-03 12:20:30 +08:00
MokVars.txt Add documentation of the Mok variables 2012-10-30 16:14:02 -04:00
netboot.c EFI_PXE_BASE_CODE_DHCPV6_PACKET is in gnu-efi-3.0t 2013-05-31 15:34:11 -04:00
netboot.h Add draft version of Neil's netboot code 2012-10-12 20:14:14 -04:00
PeImage.h dos2unix PeImage.h 2012-09-06 12:01:43 -04:00
README Add basic documentation 2012-07-28 00:42:43 -04:00
shim.c Use the correct define on Open. 2013-05-15 13:38:44 -04:00
shim.h Switch to using db format for MokList and MokNew 2012-10-12 19:55:20 -04:00
signature.h Switch to using db format for MokList and MokNew 2012-10-12 19:55:20 -04:00
TODO Update TODO 2012-07-09 10:39:14 -04:00
ucs2.h Add StrCSpn() 2013-04-30 09:46:22 -04:00

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.