Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\keys\trusted-keys\trusted_tpm1.c Create Date:2022-07-28 18:30:23
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:Lock a trusted key, by extending a selected PCR.* Prevents a trusted key that is sealed to PCRs from being accessed.* This uses the tpm driver's extend function.

Proto:static int pcrlock(const int pcrnum)

Type:int

Parameter:

TypeParameterName
const intpcrnum
389  If Not Check operation authority Then Return -EPERM
392  Return If tpm_pcr_extend(chip, pcrnum, digests) Then -EINVAL Else 0
Caller
NameDescribe
trusted_instantiaterusted_instantiate - create a new trusted key* Unseal an existing trusted blob or, for a new key, get a* random key, then seal and create a trusted key-type key,* adding it to the specified keyring.* On success, return 0. Otherwise return errno.
trusted_updaterusted_update - reseal an existing key with new PCR values