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

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  Re: [PATCH] crypto: caam - properly set IV after {en,de}crypt Herbert Xu <herbert@gondor.apana.org.au> - 2017-07-12 13:00 +0200

#1685693 — Re: [PATCH] crypto: caam - properly set IV after {en,de}crypt

On Wed, Jun 28, 2017 at 03:27:10PM +0200, 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@vger.kernel.org> # 4.8+
> Signed-off-by: David Gstir <david@sigma-star.at>

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

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