From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephan =?ISO-8859-1?Q?M=FCller?= <smueller@chronox.de>
Subject: Re: [PATCH 1/2] crypto: skcipher - noop for enc/dec with NULL data
Date: Sat, 07 Oct 2017 04:53:46 +0200
Message-ID: <2010633.8rTN3NahbQ@positron.chronox.de>
References: <3874163.dZU00zCVt8@positron.chronox.de> <3683903.fccHZfxTmM@positron.chronox.de> <20171007025117.GA29361@gondor.apana.org.au>
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To: Herbert Xu <herbert@gondor.apana.org.au>
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Am Samstag, 7. Oktober 2017, 04:51:17 CEST schrieb Herbert Xu:

Hi Herbert,

> 
> No I'm talking about the underlysing skcipher.  authenc is an
> aead, and it is legal to make a zero skcipher call.  The underlying
> skcipher should make sure that it works.
> 
> So which underlying skcipher is barfing over a zero input?

I use authenc(hmac(sha256),cbc(aes)) which in turn uses cbc-aes-aesni on my 
system.

Ciao
Stephan