[RFC PATCH v5 0/4] ima: extending secure boot certificate chain of trust

[Mimi Zohar <zohar@linux.vnet.ibm.com>]

The original patches extended the secure boot signature chain of trust
to IMA-appraisal, by allowing only certificates signed by a 'trusted'
key on the system_trusted_keyring to be added to the IMA keyring.

Instead of allowing public keys, with certificates signed by any
key on the system trusted keyring, to be added to a trusted
keyring, the last patch in this patch set further restricts the
certificates to those signed by a particular key on the system keyring.
(This is a total rewrite of the previous version.)

All comments have been addressed aside from the issue of requiring
procfs for loading a key on the ima keyring.

Mimi

Mimi Zohar (4):
  KEYS: special dot prefixed keyring name bug fix
  KEYS: verify a certificate is signed by a 'trusted' key
  ima: define '.ima' as a builtin 'trusted' keyring
  KEYS: define an owner trusted keyring

 Documentation/kernel-parameters.txt      |  5 ++
 crypto/asymmetric_keys/x509_public_key.c | 86 +++++++++++++++++++++++++++++++-
 include/keys/owner_keyring.h             | 27 ++++++++++
 include/keys/system_keyring.h            | 10 +++-
 init/Kconfig                             | 10 ++++
 kernel/Makefile                          |  1 +
 kernel/owner_keyring.c                   | 85 +++++++++++++++++++++++++++++++
 security/integrity/digsig.c              | 26 ++++++++++
 security/integrity/ima/Kconfig           |  8 +++
 security/integrity/ima/ima_main.c        | 12 ++++-
 security/integrity/integrity.h           |  5 ++
 security/keys/keyctl.c                   |  6 ++-
 12 files changed, 275 insertions(+), 6 deletions(-)
 create mode 100644 include/keys/owner_keyring.h
 create mode 100644 kernel/owner_keyring.c

-- 
1.8.1.4