Re: Security against DRAM attacks

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On Thu, Feb 21, 2008 at 06:43:50PM -0500, Michael Hampton wrote:
> The dm-crypt.c code has a provision for clearing the keys, in
> crypt_wipe_key(), but it's not clear that this code ever gets called.
> Perhaps I just haven't found where the call comes from yet.
 
The intended procedure is 

  suspend device (pauses all i/o to it)
  send wipe key message
...
  <machine suspends>
  <machine resumes>
...
  <get key again from source external to machine>
  send set key message 
  resume

Alasdair
-- 
agk@xxxxxxxxxx

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