linux-kernel - Re: [PATCH v3 1/3] ima: use ahash API for file hash calculation

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Date:	Thu, 10 Jul 2014 13:31:25 +0200
From:	Marek Vasut <marex@...x.de>
To:	Dmitry Kasatkin <d.kasatkin@...sung.com>
Cc:	Dmitry Kasatkin <dmitry.kasatkin@...il.com>,
	Mimi Zohar <zohar@...ux.vnet.ibm.com>,
	linux-ima-devel@...ts.sourceforge.net,
	"linux-security-module" <linux-security-module@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-crypto" <linux-crypto@...r.kernel.org>
Subject: Re: [PATCH v3 1/3] ima: use ahash API for file hash calculation

On Thursday, July 10, 2014 at 01:18:41 PM, Dmitry Kasatkin wrote:
[...]
> > All right, that was my understanding of the entire discussion -- an
> > accelerator dying mid-way and what will IMA do about that.
> > 
> >> But as we fallback to early allocated shash, which is not USB yet,
> >> then there is no problem.
> >> ahash itself does not bring any other additional problem than shash
> >> itself. They are compiled builtin together.
> > 
> > Sure, I understood that. But what will happen if the ahash accelerator
> > stops working mid-flight, will IMA also go bonkers or is there some
> > graceful stop?
> 
> shash fallback will be used.

Ah, thank you for clearing this!

Best regards,
Marek Vasut
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