diff options
Diffstat (limited to 'security/integrity/ima/ima_crypto.c')
| -rw-r--r-- | security/integrity/ima/ima_crypto.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/security/integrity/ima/ima_crypto.c b/security/integrity/ima/ima_crypto.c index e2be2524a372..22be23f13b3d 100644 --- a/security/integrity/ima/ima_crypto.c +++ b/security/integrity/ima/ima_crypto.c @@ -184,16 +184,17 @@ static void __init ima_pcrread(int idx, u8 *pcr) /* * Calculate the boot aggregate hash */ -int __init ima_calc_boot_aggregate(char *digest) +static int __init ima_calc_boot_aggregate_tfm(char *digest, + struct crypto_shash *tfm) { u8 pcr_i[TPM_DIGEST_SIZE]; int rc, i; struct { struct shash_desc shash; - char ctx[crypto_shash_descsize(ima_shash_tfm)]; + char ctx[crypto_shash_descsize(tfm)]; } desc; - desc.shash.tfm = ima_shash_tfm; + desc.shash.tfm = tfm; desc.shash.flags = 0; rc = crypto_shash_init(&desc.shash); @@ -210,3 +211,20 @@ int __init ima_calc_boot_aggregate(char *digest) crypto_shash_final(&desc.shash, digest); return rc; } + +int __init ima_calc_boot_aggregate(struct ima_digest_data *hash) +{ + struct crypto_shash *tfm; + int rc; + + tfm = ima_alloc_tfm(hash->algo); + if (IS_ERR(tfm)) + return PTR_ERR(tfm); + + hash->length = crypto_shash_digestsize(tfm); + rc = ima_calc_boot_aggregate_tfm(hash->digest, tfm); + + ima_free_tfm(tfm); + + return rc; +} |