kernel/security/integrity/evm/Kconfig, branch linux-4.1.y

kconfig: use bool instead of boolean for type definition attributes

2015-01-07T12:08:04Z

Support for keyword 'boolean' will be dropped later on. No functional change. Reference: http://lkml.kernel.org/r/cover.1418003065.git.cj@linux.com Signed-off-by: Christoph Jaeger Signed-off-by: Michal Marek

integrity: base integrity subsystem kconfig options on integrity

2014-09-09T14:28:56Z

The integrity subsystem has lots of options and takes more than half of the security menu. This patch consolidates the options under "integrity", which are hidden if not enabled. This change does not affect existing configurations. Re-configuration is not needed. Changes v4: - no need to change "integrity subsystem" to menuconfig as options are hidden, when not enabled. (Mimi) - add INTEGRITY Kconfig help description Changes v3: - dependency to INTEGRITY removed when behind 'if INTEGRITY' Changes v2: - previous patch moved integrity out of the 'security' menu. This version keeps integrity as a security option (Mimi). Signed-off-by: Dmitry Kasatkin Signed-off-by: Mimi Zohar

evm: provide option to protect additional SMACK xattrs

2014-06-12T21:58:06Z

Newer versions of SMACK introduced following security xattrs: SMACK64EXEC, SMACK64TRANSMUTE and SMACK64MMAP. To protect these xattrs, this patch includes them in the HMAC calculation. However, for backwards compatibility with existing labeled filesystems, including these xattrs needs to be configurable. Changelog: - Add SMACK dependency on new option (Mimi) Signed-off-by: Dmitry Kasatkin Signed-off-by: Mimi Zohar

evm: replace HMAC version with attribute mask

2014-06-12T21:58:06Z

Using HMAC version limits the posibility to arbitrarily add new attributes such as SMACK64EXEC to the hmac calculation. This patch replaces hmac version with attribute mask. Desired attributes can be enabled with configuration parameter. It allows to build kernels which works with previously labeled filesystems. Currently supported attribute is 'fsuuid' which is equivalent of the former version 2. Signed-off-by: Dmitry Kasatkin Signed-off-by: Mimi Zohar

evm: enable key retention service automatically

2014-03-07T17:15:49Z

If keys are not enabled, EVM is not visible in the configuration menu. It may be difficult to figure out what to do unless you really know. Other subsystems as NFS, CIFS select keys automatically. This patch does the same. This patch also removes '(TRUSTED_KEYS=y || TRUSTED_KEYS=n)' dependency, which is unnecessary. EVM does not depend on trusted keys, but on encrypted keys. evm.h provides compile time dependency. Signed-off-by: Dmitry Kasatkin Signed-off-by: Mimi Zohar

evm: EVM does not use MD5

2014-03-07T17:15:47Z

EVM does not use MD5 HMAC. Selection of CRYPTO_MD5 can be safely removed. Signed-off-by: Dmitry Kasatkin Signed-off-by: Mimi Zohar

evm: add file system uuid to EVM hmac

2013-02-06T15:40:28Z

EVM uses the same key for all file systems to calculate the HMAC, making it possible to paste inodes from one file system on to another one, without EVM being able to detect it. To prevent such an attack, it is necessary to make the EVM HMAC file system specific. This patch uses the file system UUID, a file system unique identifier, to bind the EVM HMAC to the file system. The value inode->i_sb->s_uuid is used for the HMAC hash calculation, instead of using it for deriving the file system specific key. Initializing the key for every inode HMAC calculation is a bit more expensive operation than adding the uuid to the HMAC hash. Changing the HMAC calculation method or adding additional info to the calculation, requires existing EVM labeled file systems to be relabeled. This patch adds a Kconfig HMAC version option for backwards compatability. Changelog v1: - squash "hmac version setting" Changelog v0: - add missing Kconfig depends (Mimi) Signed-off-by: Dmitry Kasatkin Signed-off-by: Mimi Zohar

evm: remove TCG_TPM dependency

2011-09-14T19:24:49Z

All tristates selected by EVM(boolean) are forced to be builtin, except in the TCG_TPM(tristate) dependency case. Arnaud Lacombe summarizes the Kconfig bug as, "So it would seem direct dependency state influence the state of reverse dependencies.." For a detailed explanation, refer to Arnaud Lacombe's posting http://lkml.org/lkml/2011/8/23/498. With the "encrypted-keys: remove trusted-keys dependency" patch, EVM can now be built without a dependency on TCG_TPM. The trusted-keys dependency requires trusted-keys to either be builtin or not selected. This dependency will prevent the boolean/tristate mismatch from occuring. Reported-by: Stephen Rothwell , Randy Dunlap Signed-off-by: Mimi Zohar

evm: add Kconfig TCG_TPM dependency

2011-08-18T02:58:12Z

Although the EVM encrypted-key should be encrypted/decrypted using a trusted-key, a user-defined key could be used instead. When using a user- defined key, a TCG_TPM dependency should not be required. Unfortunately, the encrypted-key code needs to be refactored a bit in order to remove this dependency. This patch adds the TCG_TPM dependency. Reported-by: Stephen Rothwell , Randy Dunlap Signed-off-by: Mimi Zohar Signed-off-by: James Morris

EVM: ensure trusted and encypted key symbols are available to EVM

2011-08-09T01:33:36Z

Select trusted and encrypted keys if EVM is selected, to ensure the requisite symbols are available. Otherwise, these can be selected as modules while EVM is static, leading to a kernel build failure. Signed-off-by: James Morris