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authorMimi Zohar <zohar@linux.vnet.ibm.com>2013-03-11 20:29:47 -0400
committerMimi Zohar <zohar@linux.vnet.ibm.com>2013-10-25 17:17:00 -0400
commit140d802240a4ba3351494b4ab199964b96f87493 (patch)
tree0fa711063f82e868ef589165e89e7b2298b60025 /security/integrity/ima/ima_crypto.c
parenta35c3fb6490cc1d3446e4781693408100113c4fb (diff)
downloadlinux-140d802240a4ba3351494b4ab199964b96f87493.tar.gz
ima: differentiate between template hash and file data hash sizes
The TPM v1.2 limits the template hash size to 20 bytes. This patch differentiates between the template hash size, as defined in the ima_template_entry, and the file data hash size, as defined in the ima_template_data. Subsequent patches add support for different file data hash algorithms. Change log: - hash digest definition in ima_store_template() should be TPM_DIGEST_SIZE Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Diffstat (limited to 'security/integrity/ima/ima_crypto.c')
-rw-r--r--security/integrity/ima/ima_crypto.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/security/integrity/ima/ima_crypto.c b/security/integrity/ima/ima_crypto.c
index 2fd178651467..872c6698067c 100644
--- a/security/integrity/ima/ima_crypto.c
+++ b/security/integrity/ima/ima_crypto.c
@@ -155,7 +155,7 @@ static void __init ima_pcrread(int idx, u8 *pcr)
*/
int __init ima_calc_boot_aggregate(char *digest)
{
- u8 pcr_i[IMA_DIGEST_SIZE];
+ u8 pcr_i[TPM_DIGEST_SIZE];
int rc, i;
struct {
struct shash_desc shash;
@@ -173,7 +173,7 @@ int __init ima_calc_boot_aggregate(char *digest)
for (i = TPM_PCR0; i < TPM_PCR8; i++) {
ima_pcrread(i, pcr_i);
/* now accumulate with current aggregate */
- rc = crypto_shash_update(&desc.shash, pcr_i, IMA_DIGEST_SIZE);
+ rc = crypto_shash_update(&desc.shash, pcr_i, TPM_DIGEST_SIZE);
}
if (!rc)
crypto_shash_final(&desc.shash, digest);