Re: [PATCH] zero disk pages used by swsusp on resume

[Andreas Steinmetz <ast@domdv.de>]

[reformatted]

Pavel Machek wrote:
> Hi! What about doing it right? Encrypt it with symmetric cypher
> and store key in suspend header. That way key is removed automagically
> while fixing signatures. No need to clear anythink.

Good idea. I'll have a look though it will take a while (busy with my job).

> OTOH we may want to dm-crypt whole swap partition.

This would leave the problem that the in-kernel data would be accessible
on the swap device after resume.

> You could still store key in header... --p

Which is the good idea from step one above.

> 
> -- pavel. Sent from  mobile phone. Sorry for poor formatting.

The only remark I do have here is that swsusp would then depend on
crypto so the swsusp encryption should be a config option.
-- 
Andreas Steinmetz                       SPAMmers use robotrap@domdv.de