Re: [PATCH v2 02/10] crypto: AF_ALG: user space interface for cipher info

From: Herbert Xu
Date: Wed Nov 19 2014 - 23:08:05 EST

On Thu, Nov 20, 2014 at 05:03:24AM +0100, Stephan Mueller wrote:
> crypto_user cannot be applied to the currently active cipher that one has open
> with AF_ALG. For getting information, one has to call crypto_user with the
> cra_driver_name of a cipher. (Why is that limitation, btw (see crypto_report
> and the use of cru_driver_name?)

It doesn't matter because every implementation must supply exactly
the same parameters as the reference implementation or it's buggy.
IOW block size, IV size, supported key sizes etc. are intrinsic
properties of the algorithm and not the implementation.

Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
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