Re: [PATCH/proposal] dm-crypt: add digest-based iv generation mode

[James Morris]

On Fri, 20 Feb 2004, Christophe Saout wrote:

> What do you think of this?
> 
> I would like to copy the tfm onto the stack so that I can
> a) compute the hmac on several CPUs at the same time without locking
> b) reuse a precomputed tfm from just after crypt_hmac_init

I think you'll run into problems on highmem boxes when the code kmaps 
pages.  IIRC, Matt Mackall has looked into this in detail.


- James
-- 
James Morris
<jmorris@xxxxxxxxxx>


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