[efi] Support extracting certificates from EFI signature list images

Add support for the EFI signature list image format (as produced by
tools such as efisecdb).

The parsing code does not require any EFI boot services functions and
so may be enabled even in non-EFI builds.  We default to enabling it
only for EFI builds.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
8 files changed
tree: 1dd16c4220845edc689f6cff30d279ec6fbf8827
  1. .github/
  2. contrib/
  3. src/
  4. COPYING
  5. COPYING.GPLv2
  6. COPYING.UBDL
  7. README