Re: [PATCH v9 4/4] crypto: Add Allwinner Security System crypto accelerator

Hi Herbert,

On Mon, 18 May 2015 08:41:21 +0800
Herbert Xu [off-list ref] wrote:

On Sun, May 17, 2015 at 12:48:11PM +0200, Boris Brezillon wrote:

quoted

Yep, but then they shouldn't be declared with CRYPTO_ALG_ASYNC and as an

                                                                  not ^

quoted

ablkcipher algorithm (*Asynchronous* Block Cipher), right ?

Right.  They can still use ablkcipher but should clear the ASYNC
bit.

Okay, just to be sure, what does "Asynchronous" mean in ablkcipher or
ahash ?
Is it related to the fact that crypto operations can be done in
multiple steps (e.g.: one set_key + several encrypt chunk operations),
or is this something else ?

Best Regards,

Boris

-- 
Boris Brezillon, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com