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+config EVM
+ boolean "EVM support"
+ depends on SECURITY && KEYS && (TRUSTED_KEYS=y || TRUSTED_KEYS=n)
+ select CRYPTO_HMAC
+ select CRYPTO_MD5
+ 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.