Instead of allowing public keys, with certificates signed by any key on
the system trusted keyring, to be added to a trusted keyring, this patch
set further restricts the certificates to those signed by a particular key
or builtin keys on the system keyring.
This patch defines a new kernel parameter 'keys_ownerid={id: | builtin}'
to use specific key or any builtin key.
Changes to v1:
* key id matching code from asymmetric_type.c is reused in the patch
Thanks,
Dmitry
Dmitry Kasatkin (3):
KEYS: make key id matching as a dedicated function
KEYS: validate certificate trust only with selected owner key
KEYS: validate certificate trust only with builtin keys
Documentation/kernel-parameters.txt | 5 ++++
crypto/asymmetric_keys/asymmetric_keys.h | 2 ++
crypto/asymmetric_keys/asymmetric_type.c | 50 ++++++++++++++++++++------------
crypto/asymmetric_keys/x509_public_key.c | 26 +++++++++++++++--
include/linux/key.h | 1 +
kernel/system_keyring.c | 1 +
6 files changed, 64 insertions(+), 21 deletions(-)
--
1.9.1
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