Messages in this thread | | | From | Pali Rohár <> | Subject | [PATCH v2 0/3] dm-crypt: Adds support for wiping key when doing suspend/hibernation | Date | Sun, 21 Jun 2015 13:20:31 +0200 |
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This patch series increase security of suspend and hibernate actions. It allows user to safely wipe crypto keys before suspend and hibernate actions starts without race conditions on userspace process with heavy I/O.
To automatically wipe cryto key for <device> before hibernate action call: $ dmsetup message <device> 0 key wipe_on_hibernation
To automatically wipe cryto key for <device> before suspend action call: $ dmsetup message <device> 0 key wipe_on_suspend
To disable automatic wipe call retain_on_suspend/retain_on_hibernation.
Pali Rohár (3): PM suspend/hibernate: Call notifier after freezing processes dm: Export function dm_suspend_md() dm-crypt: Adds support for wiping key when doing suspend/hibernation
drivers/md/dm-crypt.c | 126 +++++++++++++++++++++++++++++++++++++++++++--- drivers/md/dm.c | 6 +++ drivers/md/dm.h | 5 ++ include/linux/suspend.h | 2 + kernel/power/hibernate.c | 2 + kernel/power/suspend.c | 4 +- 6 files changed, 136 insertions(+), 9 deletions(-)
-- 1.7.9.5
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