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Diffstat (limited to '')
| -rw-r--r-- | security/integrity/Kconfig | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/security/integrity/Kconfig b/security/integrity/Kconfig new file mode 100644 index 000000000..599429f99 --- /dev/null +++ b/security/integrity/Kconfig @@ -0,0 +1,115 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +config INTEGRITY + bool "Integrity subsystem" + depends on SECURITY + default y + help + This option enables the integrity subsystem, which is comprised + of a number of different components including the Integrity + Measurement Architecture (IMA), Extended Verification Module + (EVM), IMA-appraisal extension, digital signature verification + extension and audit measurement log support. + + Each of these components can be enabled/disabled separately. + Refer to the individual components for additional details. + +if INTEGRITY + +config INTEGRITY_SIGNATURE + bool "Digital signature verification using multiple keyrings" + default n + select KEYS + select SIGNATURE + help + This option enables digital signature verification support + using multiple keyrings. It defines separate keyrings for each + of the different use cases - evm, ima, and modules. + Different keyrings improves search performance, but also allow + to "lock" certain keyring to prevent adding new keys. + This is useful for evm and module keyrings, when keys are + usually only added from initramfs. + +config INTEGRITY_ASYMMETRIC_KEYS + bool "Enable asymmetric keys support" + depends on INTEGRITY_SIGNATURE + default n + select ASYMMETRIC_KEY_TYPE + select ASYMMETRIC_PUBLIC_KEY_SUBTYPE + select CRYPTO_RSA + select X509_CERTIFICATE_PARSER + help + This option enables digital signature verification using + asymmetric keys. + +config INTEGRITY_TRUSTED_KEYRING + bool "Require all keys on the integrity keyrings be signed" + depends on SYSTEM_TRUSTED_KEYRING + depends on INTEGRITY_ASYMMETRIC_KEYS + default y + help + This option requires that all keys added to the .ima and + .evm keyrings be signed by a key on the system trusted + keyring. + +config INTEGRITY_PLATFORM_KEYRING + bool "Provide keyring for platform/firmware trusted keys" + depends on INTEGRITY_ASYMMETRIC_KEYS + depends on SYSTEM_BLACKLIST_KEYRING + help + Provide a separate, distinct keyring for platform trusted keys, which + the kernel automatically populates during initialization from values + provided by the platform for verifying the kexec'ed kerned image + and, possibly, the initramfs signature. + +config INTEGRITY_MACHINE_KEYRING + bool "Provide a keyring to which Machine Owner Keys may be added" + depends on SECONDARY_TRUSTED_KEYRING + depends on INTEGRITY_ASYMMETRIC_KEYS + depends on SYSTEM_BLACKLIST_KEYRING + depends on LOAD_UEFI_KEYS + depends on !IMA_KEYRINGS_PERMIT_SIGNED_BY_BUILTIN_OR_SECONDARY + help + If set, provide a keyring to which Machine Owner Keys (MOK) may + be added. This keyring shall contain just MOK keys. Unlike keys + in the platform keyring, keys contained in the .machine keyring will + be trusted within the kernel. + +config LOAD_UEFI_KEYS + depends on INTEGRITY_PLATFORM_KEYRING + depends on EFI + def_bool y + +config LOAD_IPL_KEYS + depends on INTEGRITY_PLATFORM_KEYRING + depends on S390 + def_bool y + +config LOAD_PPC_KEYS + bool "Enable loading of platform and blacklisted keys for POWER" + depends on INTEGRITY_PLATFORM_KEYRING + depends on PPC_SECURE_BOOT + default y + help + Enable loading of keys to the .platform keyring and blacklisted + hashes to the .blacklist keyring for powerpc based platforms. + +config INTEGRITY_AUDIT + bool "Enables integrity auditing support " + depends on AUDIT + default y + help + In addition to enabling integrity auditing support, this + option adds a kernel parameter 'integrity_audit', which + controls the level of integrity auditing messages. + 0 - basic integrity auditing messages (default) + 1 - additional integrity auditing messages + + Additional informational integrity auditing messages would + be enabled by specifying 'integrity_audit=1' on the kernel + command line. + +source "security/integrity/ima/Kconfig" +source "security/integrity/evm/Kconfig" + +endif # if INTEGRITY |