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Peter Jones 0dcd5a8e90 Validate computed hash bases/hash sizes more thoroughly. 
I screwed one of these up when working on 750584c, and it's a real pain
to figure out, so that means we should be validating them.

Signed-off-by: Peter Jones <pjones@redhat.com>
2014-09-21 16:25:20 -04:00
Cryptlib Update openssl to 0.9.8zb 2014-08-19 14:20:23 -04:00
include Make sure we don't try to load a binary from a different arch. 2014-08-27 16:40:57 -04:00
lib Factor out x86-isms and add cross compile support 2014-08-12 10:54:05 -04:00
.gitignore Add ident-like blobs to shim.efi for version checking. 2013-10-03 11:11:09 -04:00
cert.S Add support for 32-bit ARM 2014-08-12 10:54:05 -04:00
COPYRIGHT Add copyright file 2012-07-09 11:03:12 -04:00
crypt_blowfish.c MokManager: support blowfish-based crypt() hash 2013-09-26 11:58:01 -04:00
crypt_blowfish.h MokManager: support blowfish-based crypt() hash 2013-09-26 11:58:01 -04:00
elf_aarch64_efi.lds Add support for 64-bit ARM (AArch64) 2014-08-12 10:54:05 -04:00
elf_arm_efi.lds Fix typo from Ard's old tree 32-bit ARM patch. 2014-08-27 11:49:39 -04:00
elf_ia32_efi.lds Move embedded certificates to their own section. 2013-06-10 17:35:33 -04:00
elf_ia64_efi.lds Move embedded certificates to their own section. 2013-06-10 17:35:33 -04:00
elf_x86_64_efi.lds Move embedded certificates to their own section. 2013-06-10 17:35:33 -04:00
fallback.c [fallback] Try to boot the first boot option anyway 2014-05-13 13:30:07 -04:00
make-certs Sign MokManager with a locally-generated key 2012-11-26 13:43:50 -05:00
Makefile Add support for 32-bit ARM 2014-08-12 10:54:05 -04:00
MokManager.c MokManager: handle the error status from ReadKeyStroke 2014-06-25 10:02:18 -04:00
MokVars.txt Add support for disabling db for verification 2013-10-02 11:29:34 -04:00
netboot.c Factor out x86-isms and add cross compile support 2014-08-12 10:54:05 -04:00
netboot.h netboot.h: fix build error on 32-bit systems 2013-11-12 10:25:40 -05:00
PasswordCrypt.c additional bounds-checking on section sizes 2014-04-11 14:41:22 -04:00
PasswordCrypt.h MokManager: support Tradition DES hash 2013-09-26 11:58:01 -04:00
README Replace build instructions in README with something not completely wrong. 2014-07-21 16:15:07 -04:00
replacements.c Don't name something exit(). 2014-08-27 16:40:57 -04:00
replacements.h Allow fallback to use the system's LoadImage/StartImage . 2014-02-14 17:48:01 -05:00
shim.c Validate computed hash bases/hash sizes more thoroughly. 2014-09-21 16:25:20 -04:00
shim.h Make SHIM_LOCK_GUID a first-class object with a symbol. 2013-09-23 10:40:49 -04:00
testplan.txt Add a failure case to the test plan and fix an ordering error. 2014-02-14 17:48:01 -05:00
TODO Update for Josh's changes. 2013-10-02 13:33:52 -04:00
ucs2.h Add StrCSpn() 2013-04-30 09:46:22 -04:00
version.c.in Add ident-like blobs to shim.efi for version checking. 2013-10-03 11:11:09 -04:00
version.h Add ident-like blobs to shim.efi for version checking. 2013-10-03 11:11:09 -04:00

README 

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 DER-encoded public certificate in a file such as
pub.cer and build with "make VENDOR_CERT_FILE=pub.cer".