linux-kernel - Re: [PATCH] Use memzero_explicit to clear local buffers

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Message-ID: <20150104230527.GJ4806@salidar.dom.custoft.eu>
Date:	Mon, 5 Jan 2015 00:05:28 +0100
From:	Giel van Schijndel <me@...tis.eu>
To:	linux-kernel@...r.kernel.org
Cc:	Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"maintainer:X86 ARCHITECTURE..." <x86@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Steve French <sfrench@...ba.org>,
	Rahul Bedarkar <rahulbedarkar89@...il.com>,
	Thomas Pugliese <thomas.pugliese@...il.com>,
	Randy Dunlap <rdunlap@...radead.org>,
	Julia Lawall <Julia.Lawall@...6.fr>,
	"open list:CRYPTO API" <linux-crypto@...r.kernel.org>,
	"open list:CERTIFIED WIRELES..." <linux-usb@...r.kernel.org>,
	"open list:COMMON INTERNET F..." <linux-cifs@...r.kernel.org>,
	"moderated list:COMMON INTERNET F..." 
	<samba-technical@...ts.samba.org>
Subject: Re: [PATCH] Use memzero_explicit to clear local buffers

On Sun, Jan 04, 2015 at 19:05:40 +0100, Giel van Schijndel wrote:
> When leaving a function use memzero_explicit instead of memset(0) to
> clear locally allocated/owned buffers. memset(0) may be optimized away.
> 
> All of the affected buffers contain sensitive data, key material or
> derivatives of one of those two.
> ---

Forgot to:
Signed-off-by: Giel van Schijndel <me@...tis.eu>

-- 
Met vriendelijke groet,
With kind regards,
Giel van Schijndel
--
"Question: what do you call your programming methodology?
 Answer: Faith based development. You code and then pray that it works."
  -- John Spelner

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