[v2,0/2] Check codeSigning extended key usage extension

Message

Chun-Yi Lee Nov. 5, 2020, 4:24 a.m. UTC

NIAP PP_OS certification requests that the OS shall validate the
CodeSigning extended key usage extension field for integrity
verifiction of exectable code:

    https://www.niap-ccevs.org/MMO/PP/-442-/
        FIA_X509_EXT.1.1

This patchset adds the logic for parsing the codeSigning EKU extension
field in X.509. And checking the CodeSigning EKU when verifying
signature of kernel module or kexec PE binary in PKCS#7.

v2:
Changed the help wording in the Kconfig.

Lee, Chun-Yi (2):
  X.509: Add CodeSigning extended key usage parsing
  PKCS#7: Check codeSigning EKU for kernel module and kexec pe
    verification

 certs/system_keyring.c                    |  2 +-
 crypto/asymmetric_keys/Kconfig            |  9 ++++++++
 crypto/asymmetric_keys/pkcs7_trust.c      | 37 ++++++++++++++++++++++++++++---
 crypto/asymmetric_keys/x509_cert_parser.c | 24 ++++++++++++++++++++
 include/crypto/pkcs7.h                    |  3 ++-
 include/crypto/public_key.h               |  1 +
 include/linux/oid_registry.h              |  5 +++++
 7 files changed, 76 insertions(+), 5 deletions(-)