[crypto] Support decryption of images via CMS envelopes

Add support for decrypting images containing detached encrypted data
using a cipher key obtained from a separate CMS envelope image (in DER
or PEM format).

Signed-off-by: Michael Brown <mcb30@ipxe.org>
3 files changed
tree: e1da90eda839e8a387bc44dc45e5f7c2be6d2e4f
  1. .github/
  2. contrib/
  3. src/
  4. COPYING
  5. COPYING.GPLv2
  6. COPYING.UBDL
  7. README