config EVM boolean "EVM support" depends on SECURITY && KEYS && (TRUSTED_KEYS=y || TRUSTED_KEYS=n) select CRYPTO_HMAC select CRYPTO_SHA1 select ENCRYPTED_KEYS 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_HMAC_VERSION int "EVM HMAC version" depends on EVM default 2 help This options adds EVM HMAC version support. 1 - original version 2 - add per filesystem unique identifier (UUID) (default) WARNING: changing the HMAC calculation method or adding additional info to the calculation, requires existing EVM labeled file systems to be relabeled.