Hi Arno , thanks for the reply. What if I trick the system to have block size of say 128 instead of the default 16 for my AES driver? Do you know what the side effect could be?
Thanks!
On Apr 20, 2012 6:23 PM, "Arno Wagner" <arno@xxxxxxxxxxx> wrote:
I think you cannot. As long as the block-size for the IV scheme
is 512 bytes, you are stuck with encrypting 512 bytes at a time,
as they have their own IV.
Arno
On Fri, Apr 20, 2012 at 05:28:54PM +0800, Rodel Miguel wrote:
> Hi,
>
> I am implementing a hardware encryption driver but I am having some
> performance issues. One of the areas of performance improvement that I am
> thinking is to increase the number of bytes (unsigned int nbytes) that my
> block cipher driver's encrypt/decrypt function gets; from 512 to 4096
> bytes. My hardware can be maximized to 4kbytes. Do you have any
> suggestions how I can maximize the en/decrypt performance by getting more
> than 512 bytes of data every time the block cipher's encrypt/decrypt is
> called?
>
> Thank you very much for your help!
>
> Kind Regards,
> Rodel
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--
Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno@xxxxxxxxxxx
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with doubt and indecision. -- Bertrand Russell
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