diff options
Diffstat (limited to 'security/integrity/Kconfig')
| -rw-r--r-- | security/integrity/Kconfig | 82 |
1 files changed, 68 insertions, 14 deletions
diff --git a/security/integrity/Kconfig b/security/integrity/Kconfig index 2ea4ec9991d5..916d4f2bfc44 100644 --- a/security/integrity/Kconfig +++ b/security/integrity/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only # config INTEGRITY bool "Integrity subsystem" @@ -17,8 +18,8 @@ if INTEGRITY config INTEGRITY_SIGNATURE bool "Digital signature verification using multiple keyrings" - depends on KEYS default n + select KEYS select SIGNATURE help This option enables digital signature verification support @@ -33,10 +34,11 @@ 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 + select ASYMMETRIC_KEY_TYPE + select ASYMMETRIC_PUBLIC_KEY_SUBTYPE + select CRYPTO + select CRYPTO_RSA + select X509_CERTIFICATE_PARSER help This option enables digital signature verification using asymmetric keys. @@ -52,15 +54,67 @@ config INTEGRITY_TRUSTED_KEYRING keyring. config INTEGRITY_PLATFORM_KEYRING - bool "Provide keyring for platform/firmware trusted keys" - depends on INTEGRITY_ASYMMETRIC_KEYS - depends on SYSTEM_BLACKLIST_KEYRING - depends on EFI - 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. + 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 || LOAD_PPC_KEYS + 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 INTEGRITY_CA_MACHINE_KEYRING + bool "Enforce Machine Keyring CA Restrictions" + depends on INTEGRITY_MACHINE_KEYRING + default n + help + The .machine keyring can be configured to enforce CA restriction + on any key added to it. By default no restrictions are in place + and all Machine Owner Keys (MOK) are added to the machine keyring. + If enabled only CA keys are added to the machine keyring, all + other MOK keys load into the platform keyring. + +config INTEGRITY_CA_MACHINE_KEYRING_MAX + bool "Only CA keys without DigitialSignature usage set" + depends on INTEGRITY_CA_MACHINE_KEYRING + default n + help + When selected, only load CA keys are loaded into the machine + keyring that contain the CA bit set along with the keyCertSign + Usage field. Keys containing the digitialSignature Usage field + will not be loaded. The remaining MOK keys are loaded into the + .platform keyring. + +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 " |