1# 2config 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 16if INTEGRITY 17 18config 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 32config 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 45config 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 select KEYS_DEBUG_PROC_KEYS 50 default y 51 help 52 This option requires that all keys added to the .ima and 53 .evm keyrings be signed by a key on the system trusted 54 keyring. 55 56config INTEGRITY_AUDIT 57 bool "Enables integrity auditing support " 58 depends on AUDIT 59 default y 60 help 61 In addition to enabling integrity auditing support, this 62 option adds a kernel parameter 'integrity_audit', which 63 controls the level of integrity auditing messages. 64 0 - basic integrity auditing messages (default) 65 1 - additional integrity auditing messages 66 67 Additional informational integrity auditing messages would 68 be enabled by specifying 'integrity_audit=1' on the kernel 69 command line. 70 71source security/integrity/ima/Kconfig 72source security/integrity/evm/Kconfig 73 74endif # if INTEGRITY 75