Commit f0894940 authored by David Howells's avatar David Howells
Browse files

KEYS: Move the key config into security/keys/Kconfig 



Move the key config into security/keys/Kconfig as there are going to be a lot
of key-related options.

Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
Acked-by: default avatarMimi Zohar <zohar@us.ibm.com>
parent 45de6767

security/Kconfig

+1 −67
Original line number Diff line number Diff line
@@ -4,73 +4,7 @@ 


menu "Security options"



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.

source security/keys/Kconfig



config SECURITY_DMESG_RESTRICT

	bool "Restrict unprivileged access to the kernel syslog"

security/keys/Kconfig

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Original line number Diff line number Diff line 
#

# 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.