linux-kernel - Re: [PATCH] crypto: AEAD: add check for presence of auth tag

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Message-ID: <20150105105540.GA25665@gondor.apana.org.au>
Date:	Mon, 5 Jan 2015 21:55:40 +1100
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Stephan Mueller <smueller@...onox.de>
Cc:	'LKML' <linux-kernel@...r.kernel.org>, linux-crypto@...r.kernel.org
Subject: Re: [PATCH] crypto: AEAD: add check for presence of auth tag

On Mon, Jan 05, 2015 at 11:53:38AM +0100, Stephan Mueller wrote:
>
> Could you please check: I am unable to find the function.

It's in crypto/authenc.c.

> Note, there is no size parameter provided in crypto_aead_decrypt. To obtain 
> the size, I would need to walk the scatterlists, no?

The cryptlen is supposed to contain the entire input apart from the
AD, including the authentication tag if one is present.

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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