Re: [PATCH v2 02/10] crypto: AF_ALG: user space interface for cipher info
From: Herbert Xu <hidden>
Date: 2014-11-20 04:08:00
Also in:
linux-crypto, lkml
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. Cheers, -- Email: Herbert Xu [off-list ref] Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt