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[PATCH] erase variable data on user unset
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From: |
Robert Millan |
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Subject: |
[PATCH] erase variable data on user unset |
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Date: |
Sun, 10 Feb 2008 21:47:38 +0100 |
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User-agent: |
Mutt/1.5.13 (2006-08-11) |
On Sun, Feb 10, 2008 at 03:00:31PM -0500, Isaac Dupree wrote:
> Robert Millan wrote:
> >On Sun, Feb 10, 2008 at 01:00:50PM -0500, Isaac Dupree wrote:
> >>anyway if a hash is used that takes (by design) around one second on the
> >>machine (e.g. sha256 repeated thousands? millions? of times), then I
> >>suppose the time taken to erase the memory used by GRUB would be trivial
> >>in comparison, assuming(rightly or wrongly) a good implementation...
> >
> >The problem is not time, it's just to find the right way to do it.
>
> yeah. probably involves thinking about GRUB's allocation and
> deallocation mechanisms, which I don't know anything about and don't
> have time to investigate :-/
This should address your concern. As to why I propose to put this in unset
command rather than kernel, since GRUB itself doesn't have any mechanisms
where a variable would contain sensible information, I think it's better to
protect user variables only.
--
Robert Millan
<GPLv2> I know my rights; I want my phone call!
<DRM> What use is a phone call… if you are unable to speak?
(as seen on /.)
unset.diff
Description: Text Data
- [PATCH] read --echo=[yes|no|wildcard], Robert Millan, 2008/02/10
- Re: [PATCH] read --echo=[yes|no|wildcard], Isaac Dupree, 2008/02/10
- Re: [PATCH] read --echo=[yes|no|wildcard], Robert Millan, 2008/02/10
- Re: [PATCH] read --echo=[yes|no|wildcard], Isaac Dupree, 2008/02/10
- Re: [PATCH] read --echo=[yes|no|wildcard], Robert Millan, 2008/02/10
- Re: [PATCH] read --echo=[yes|no|wildcard], Isaac Dupree, 2008/02/10
- Re: [PATCH] read --echo=[yes|no|wildcard], Robert Millan, 2008/02/10
- Re: [PATCH] read --echo=[yes|no|wildcard], Isaac Dupree, 2008/02/10
- [PATCH] erase variable data on user unset,
Robert Millan <=
- Re: [PATCH] erase variable data on user unset, Robert Millan, 2008/02/10
- Re: [PATCH] erase variable data on user unset, Isaac Dupree, 2008/02/10
- Re: [PATCH] erase variable data on user unset, Isaac Dupree, 2008/02/10
- Re: [PATCH] erase variable data on user unset, Robert Millan, 2008/02/10
Re: [PATCH] read --echo=[yes|no|wildcard], Yoshinori K. Okuji, 2008/02/10