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

[James Morris]

On Mon, 23 Feb 2004, Jean-Luc Cooke wrote:

> The analogy of:
> 
> for (i=0; i<len; i++)
>   omac_encrypt(tfm, dst[i], src[i], nbytes);
> 
> Will not work with OMAC since it creates a MAC and not a ciphertext stream
> like the other modes.
> 
> for (i=0; i<len; i++)
>   omac_encrypt(tfm, dst[0], src[i], nbytes);
> /*                      ^ see here!           */
> memcpy(mac, dest, ...); /* store the mac */
> 
> Is more appropriate.  James - is this possible?

What exactly are you trying to do?


- James
-- 
James Morris
<jmorris@xxxxxxxxxx>


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