| 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_ADD_XATTRS | |
| bool "Add additional EVM extended attributes at runtime" | |
| depends on EVM | |
| default n | |
| help | |
| Allow userland to provide additional xattrs for HMAC calculation. | |
| When this option is enabled, root can add additional xattrs to the | |
| list used by EVM by writing them into | |
| /sys/kernel/security/integrity/evm/evm_xattrs. | |
| config EVM_LOAD_X509 | |
| bool "Load an X509 certificate onto the '.evm' trusted keyring" | |
| depends on EVM && 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. |