| 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. |
| |
