Re: [PATCH] crypto: caam - properly set IV after {en,de}crypt

[Horia Geantă]

On 6/28/2017 4:27 PM, David Gstir wrote:
> Certain cipher modes like CTS expect the IV (req->info) of
> ablkcipher_request (or equivalently req->iv of skcipher_request) to
> contain the last ciphertext block when the {en,de}crypt operation is done.
> This is currently not the case for the CAAM driver which in turn breaks
> e.g. cts(cbc(aes)) when the CAAM driver is enabled.
> 
> This patch fixes the CAAM driver to properly set the IV after the
> {en,de}crypt operation of ablkcipher finishes.
> 
> This issue was revealed by the changes in the SW CTS mode in commit
> 0605c41cc53ca ("crypto: cts - Convert to skcipher")
> 
> Cc: <stable@xxxxxxxxxxxxxxx> # 4.8+
> Signed-off-by: David Gstir <david@xxxxxxxxxxxxx>
Reviewed-by: Horia Geantă <horia.geanta@xxxxxxx>

Thanks,
Horia