Messages in this thread Patch in this message | | | From | Lakshmi Ramasubramanian <> | Subject | [PATCH v4 01/10] IMA: Defined an IMA hook to measure keys on key create or update | Date | Wed, 6 Nov 2019 11:01:07 -0800 |
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Asymmetric keys used for verifying file signatures or certificates are currently not included in the IMA measurement list.
This patch defines a new IMA hook namely ima_post_key_create_or_update() to measure asymmetric keys.
Signed-off-by: Lakshmi Ramasubramanian <nramas@linux.microsoft.com> --- security/integrity/ima/ima_main.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c index d7e987baf127..a0e233afe876 100644 --- a/security/integrity/ima/ima_main.c +++ b/security/integrity/ima/ima_main.c @@ -721,6 +721,22 @@ void ima_kexec_cmdline(const void *buf, int size) KEXEC_CMDLINE, 0); } +/** + * ima_post_key_create_or_update - measure asymmetric keys + * @keyring: keyring to which the key is linked to + * @key: created or updated key + * @flags: key flags + * @create: flag indicating whether the key was created or updated + * + * Keys can only be measured, not appraised. + */ +void ima_post_key_create_or_update(struct key *keyring, struct key *key, + unsigned long flags, bool create) +{ + if ((keyring != NULL) && (key != NULL)) + return; +} + static int __init init_ima(void) { int error; -- 2.17.1
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