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| author | Roberto Sassu <roberto.sassu@huawei.com> | 2020-03-25 11:54:24 +0100 |
|---|---|---|
| committer | Mimi Zohar <zohar@linux.ibm.com> | 2020-04-20 04:03:39 +0200 |
| commit | 2592677c0486e64a08e0b930a7dfa6fbf77e6fc1 (patch) | |
| tree | c4cd48197855b2fea5f3c1e0ee86edf6a759d84c /security/integrity/ima/ima.h | |
| parent | ima: Calculate and extend PCR with digests in ima_template_entry (diff) | |
| download | linux-2592677c0486e64a08e0b930a7dfa6fbf77e6fc1.tar.xz linux-2592677c0486e64a08e0b930a7dfa6fbf77e6fc1.zip | |
ima: Use ima_hash_algo for collision detection in the measurement list
Before calculating a digest for each PCR bank, collisions were detected
with a SHA1 digest. This patch includes ima_hash_algo among the algorithms
used to calculate the template digest and checks collisions on that digest.
The position in the measurement entry array of the template digest
calculated with the IMA default hash algorithm is stored in the
ima_hash_algo_idx global variable and is determined at IMA initialization
time.
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Diffstat (limited to 'security/integrity/ima/ima.h')
| -rw-r--r-- | security/integrity/ima/ima.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/security/integrity/ima/ima.h b/security/integrity/ima/ima.h index 2a7ed68e6414..467dfdbea25c 100644 --- a/security/integrity/ima/ima.h +++ b/security/integrity/ima/ima.h @@ -53,6 +53,7 @@ extern int ima_policy_flag; /* set during initialization */ extern int ima_hash_algo; extern int ima_sha1_idx __ro_after_init; +extern int ima_hash_algo_idx __ro_after_init; extern int ima_extra_slots __ro_after_init; extern int ima_appraise; extern struct tpm_chip *ima_tpm_chip; |