security/integrity/Kconfig

   1 #
   2 config INTEGRITY
   3         bool "Integrity subsystem"
   4         depends on SECURITY
   5         default y
   6         help
   7           This option enables the integrity subsystem, which is comprised
   8           of a number of different components including the Integrity
   9           Measurement Architecture (IMA), Extended Verification Module
  10           (EVM), IMA-appraisal extension, digital signature verification
  11           extension and audit measurement log support.
  12
  13           Each of these components can be enabled/disabled separately.
  14           Refer to the individual components for additional details.
  15
  16 if INTEGRITY
  17
  18 config INTEGRITY_SIGNATURE
  19         bool "Digital signature verification using multiple keyrings"
  20         depends on KEYS
  21         default n
  22         select SIGNATURE
  23         help
  24           This option enables digital signature verification support
  25           using multiple keyrings. It defines separate keyrings for each
  26           of the different use cases - evm, ima, and modules.
  27           Different keyrings improves search performance, but also allow
  28           to "lock" certain keyring to prevent adding new keys.
  29           This is useful for evm and module keyrings, when keys are
  30           usually only added from initramfs.
  31
  32 config INTEGRITY_ASYMMETRIC_KEYS
  33         bool "Enable asymmetric keys support"
  34         depends on INTEGRITY_SIGNATURE
  35         default n
  36         select ASYMMETRIC_KEY_TYPE
  37         select ASYMMETRIC_PUBLIC_KEY_SUBTYPE
  38         select PUBLIC_KEY_ALGO_RSA
  39         select CRYPTO_RSA
  40         select X509_CERTIFICATE_PARSER
  41         help
  42           This option enables digital signature verification using
  43           asymmetric keys.
  44
  45 config INTEGRITY_TRUSTED_KEYRING
  46         bool "Require all keys on the integrity keyrings be signed"
  47         depends on SYSTEM_TRUSTED_KEYRING
  48         depends on INTEGRITY_ASYMMETRIC_KEYS
  49         default y
  50         help
  51            This option requires that all keys added to the .ima and
  52            .evm keyrings be signed by a key on the system trusted
  53            keyring.
  54
  55 config INTEGRITY_AUDIT
  56         bool "Enables integrity auditing support "
  57         depends on AUDIT
  58         default y
  59         help
  60           In addition to enabling integrity auditing support, this
  61           option adds a kernel parameter 'integrity_audit', which
  62           controls the level of integrity auditing messages.
  63           0 - basic integrity auditing messages (default)
  64           1 - additional integrity auditing messages
  65
  66           Additional informational integrity auditing messages would
  67           be enabled by specifying 'integrity_audit=1' on the kernel
  68           command line.
  69
  70 source security/integrity/ima/Kconfig
  71 source security/integrity/evm/Kconfig
  72
  73 endif   # if INTEGRITY