diff options
| author | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2013-06-07 14:16:38 +0400 |
|---|---|---|
| committer | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2013-10-27 05:32:46 +0400 |
| commit | 5278aa52f35003ddafda80b0243b3693f935b134 (patch) | |
| tree | ca904308ffb6482612ab6f74ee7480c8e4fcf18c /security/integrity | |
| parent | a71dc65d30a472409f05d247f4eab91b14acf2f5 (diff) | |
| download | linux-5278aa52f35003ddafda80b0243b3693f935b134.tar.xz | |
ima: add audit log support for larger hashes
Different files might be signed based on different hash algorithms.
This patch prefixes the audit log measurement hash with the hash
algorithm.
Changelog:
- use generic HASH_ALGO defintions
- use ':' as delimiter between the hash algorithm and the digest
(Roberto Sassu)
- always include the hash algorithm used when audit-logging a measurement
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Roberto Sassu <roberto.sassu@polito.it>
Signed-off-by: Peter Moody <pmoody@google.com>
Diffstat (limited to 'security/integrity')
| -rw-r--r-- | security/integrity/ima/ima_api.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/security/integrity/ima/ima_api.c b/security/integrity/ima/ima_api.c index baa348179527..5fcc80695d87 100644 --- a/security/integrity/ima/ima_api.c +++ b/security/integrity/ima/ima_api.c @@ -270,6 +270,8 @@ void ima_audit_measurement(struct integrity_iint_cache *iint, { struct audit_buffer *ab; char hash[(iint->ima_hash->length * 2) + 1]; + const char *algo_name = hash_algo_name[iint->ima_hash->algo]; + char algo_hash[sizeof(hash) + strlen(algo_name) + 2]; int i; if (iint->flags & IMA_AUDITED) @@ -287,7 +289,8 @@ void ima_audit_measurement(struct integrity_iint_cache *iint, audit_log_format(ab, "file="); audit_log_untrustedstring(ab, filename); audit_log_format(ab, " hash="); - audit_log_untrustedstring(ab, hash); + snprintf(algo_hash, sizeof(algo_hash), "%s:%s", algo_name, hash); + audit_log_untrustedstring(ab, algo_hash); audit_log_task_info(ab, current); audit_log_end(ab); |