mirror of
https://github.com/torvalds/linux.git
synced 2024-11-27 14:41:39 +00:00
f0894940ae
Move the key config into security/keys/Kconfig as there are going to be a lot of key-related options. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Mimi Zohar <zohar@us.ibm.com>
72 lines
2.4 KiB
Plaintext
72 lines
2.4 KiB
Plaintext
#
|
|
# Key management configuration
|
|
#
|
|
|
|
config KEYS
|
|
bool "Enable access key retention support"
|
|
help
|
|
This option provides support for retaining authentication tokens and
|
|
access keys in the kernel.
|
|
|
|
It also includes provision of methods by which such keys might be
|
|
associated with a process so that network filesystems, encryption
|
|
support and the like can find them.
|
|
|
|
Furthermore, a special type of key is available that acts as keyring:
|
|
a searchable sequence of keys. Each process is equipped with access
|
|
to five standard keyrings: UID-specific, GID-specific, session,
|
|
process and thread.
|
|
|
|
If you are unsure as to whether this is required, answer N.
|
|
|
|
config TRUSTED_KEYS
|
|
tristate "TRUSTED KEYS"
|
|
depends on KEYS && TCG_TPM
|
|
select CRYPTO
|
|
select CRYPTO_HMAC
|
|
select CRYPTO_SHA1
|
|
help
|
|
This option provides support for creating, sealing, and unsealing
|
|
keys in the kernel. Trusted keys are random number symmetric keys,
|
|
generated and RSA-sealed by the TPM. The TPM only unseals the keys,
|
|
if the boot PCRs and other criteria match. Userspace will only ever
|
|
see encrypted blobs.
|
|
|
|
If you are unsure as to whether this is required, answer N.
|
|
|
|
config ENCRYPTED_KEYS
|
|
tristate "ENCRYPTED KEYS"
|
|
depends on KEYS
|
|
select CRYPTO
|
|
select CRYPTO_HMAC
|
|
select CRYPTO_AES
|
|
select CRYPTO_CBC
|
|
select CRYPTO_SHA256
|
|
select CRYPTO_RNG
|
|
help
|
|
This option provides support for create/encrypting/decrypting keys
|
|
in the kernel. Encrypted keys are kernel generated random numbers,
|
|
which are encrypted/decrypted with a 'master' symmetric key. The
|
|
'master' key can be either a trusted-key or user-key type.
|
|
Userspace only ever sees/stores encrypted blobs.
|
|
|
|
If you are unsure as to whether this is required, answer N.
|
|
|
|
config KEYS_DEBUG_PROC_KEYS
|
|
bool "Enable the /proc/keys file by which keys may be viewed"
|
|
depends on KEYS
|
|
help
|
|
This option turns on support for the /proc/keys file - through which
|
|
can be listed all the keys on the system that are viewable by the
|
|
reading process.
|
|
|
|
The only keys included in the list are those that grant View
|
|
permission to the reading process whether or not it possesses them.
|
|
Note that LSM security checks are still performed, and may further
|
|
filter out keys that the current process is not authorised to view.
|
|
|
|
Only key attributes are listed here; key payloads are not included in
|
|
the resulting table.
|
|
|
|
If you are unsure as to whether this is required, answer N.
|