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config EVM
bool "EVM support"
select KEYS
select ENCRYPTED_KEYS
select CRYPTO_HMAC
select CRYPTO_SHA1
default n
help
EVM protects a file's security extended attributes against
integrity attacks.
If you are unsure how to answer this question, answer N.
config EVM_ATTR_FSUUID
bool "FSUUID (version 2)"
default y
depends on EVM
help
Include filesystem UUID for HMAC calculation.
Default value is 'selected', which is former version 2.
if 'not selected', it is former version 1
WARNING: changing the HMAC calculation method or adding
additional info to the calculation, requires existing EVM
labeled file systems to be relabeled.
config EVM_EXTRA_SMACK_XATTRS
bool "Additional SMACK xattrs"
depends on EVM && SECURITY_SMACK
default n
help
Include additional SMACK xattrs for HMAC calculation.
In addition to the original security xattrs (eg. security.selinux,
security.SMACK64, security.capability, and security.ima) included
in the HMAC calculation, enabling this option includes newly defined
Smack xattrs: security.SMACK64EXEC, security.SMACK64TRANSMUTE and
security.SMACK64MMAP.
WARNING: changing the HMAC calculation method or adding
additional info to the calculation, requires existing EVM
labeled file systems to be relabeled.
config EVM_LOAD_X509
bool "Load an X509 certificate onto the '.evm' trusted keyring"
depends on INTEGRITY_TRUSTED_KEYRING
default n
help
Load an X509 certificate onto the '.evm' trusted keyring.
This option enables X509 certificate loading from the kernel
onto the '.evm' trusted keyring. A public key can be used to
verify EVM integrity starting from the 'init' process.
config EVM_X509_PATH
string "EVM X509 certificate path"
depends on EVM_LOAD_X509
default "/etc/keys/x509_evm.der"
help
This option defines X509 certificate path.
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