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f4dc37785e
Require all keys added to the EVM keyring be signed by an existing trusted key on the system trusted keyring. This patch also switches IMA to use integrity_init_keyring(). Changes in v3: * Added 'init_keyring' config based variable to skip initializing keyring instead of using __integrity_init_keyring() wrapper. * Added dependency back to CONFIG_IMA_TRUSTED_KEYRING Changes in v2: * Replace CONFIG_EVM_TRUSTED_KEYRING with IMA and EVM common CONFIG_INTEGRITY_TRUSTED_KEYRING configuration option * Deprecate CONFIG_IMA_TRUSTED_KEYRING but keep it for config file compatibility. (Mimi Zohar) Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@huawei.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
74 lines
2.3 KiB
Plaintext
74 lines
2.3 KiB
Plaintext
#
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config INTEGRITY
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bool "Integrity subsystem"
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depends on SECURITY
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default y
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help
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This option enables the integrity subsystem, which is comprised
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of a number of different components including the Integrity
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Measurement Architecture (IMA), Extended Verification Module
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(EVM), IMA-appraisal extension, digital signature verification
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extension and audit measurement log support.
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Each of these components can be enabled/disabled separately.
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Refer to the individual components for additional details.
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if INTEGRITY
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config INTEGRITY_SIGNATURE
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bool "Digital signature verification using multiple keyrings"
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depends on KEYS
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default n
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select SIGNATURE
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help
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This option enables digital signature verification support
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using multiple keyrings. It defines separate keyrings for each
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of the different use cases - evm, ima, and modules.
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Different keyrings improves search performance, but also allow
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to "lock" certain keyring to prevent adding new keys.
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This is useful for evm and module keyrings, when keys are
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usually only added from initramfs.
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config INTEGRITY_ASYMMETRIC_KEYS
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bool "Enable asymmetric keys support"
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depends on INTEGRITY_SIGNATURE
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default n
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select ASYMMETRIC_KEY_TYPE
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select ASYMMETRIC_PUBLIC_KEY_SUBTYPE
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select PUBLIC_KEY_ALGO_RSA
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select X509_CERTIFICATE_PARSER
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help
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This option enables digital signature verification using
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asymmetric keys.
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config INTEGRITY_TRUSTED_KEYRING
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bool "Require all keys on the integrity keyrings be signed"
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depends on SYSTEM_TRUSTED_KEYRING
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depends on INTEGRITY_ASYMMETRIC_KEYS
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select KEYS_DEBUG_PROC_KEYS
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default y
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help
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This option requires that all keys added to the .ima and
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.evm keyrings be signed by a key on the system trusted
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keyring.
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config INTEGRITY_AUDIT
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bool "Enables integrity auditing support "
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depends on AUDIT
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default y
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help
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In addition to enabling integrity auditing support, this
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option adds a kernel parameter 'integrity_audit', which
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controls the level of integrity auditing messages.
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0 - basic integrity auditing messages (default)
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1 - additional integrity auditing messages
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Additional informational integrity auditing messages would
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be enabled by specifying 'integrity_audit=1' on the kernel
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command line.
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source security/integrity/ima/Kconfig
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source security/integrity/evm/Kconfig
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endif # if INTEGRITY
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