netdev - Re: IPSec hmac(sha256) truncation bits length

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Message-ID: <CAH=tA9FD2z2LAPU51yuhvM8-K_Ep6h09uk3+ZEk0kCROp7ahug@mail.gmail.com>
Date:	Wed, 4 Mar 2015 20:56:58 +0200
From:	Nicolae Rosia <nicolae.rosia@...il.com>
To:	Kim Phillips <kim.phillips@...escale.com>,
	Andreas Steffen <andreas.steffen@...ongswan.org>
Cc:	"linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	netdev@...r.kernel.org
Subject: Re: IPSec hmac(sha256) truncation bits length

Thank you, Andreas and Kim.

Best regards,
Nicolae Rosia

On Wed, Mar 4, 2015 at 8:38 PM, Kim Phillips <kim.phillips@...escale.com> wrote:
> On Wed, 4 Mar 2015 20:28:26 +0200
> Nicolae Rosia <nicolae.rosia@...il.com> wrote:
>
>> On Wed, Mar 4, 2015 at 7:13 PM, Nicolae Rosia <nicolae.rosia@...il.com> wrote:
>> > I'm trying to understand why icv_truncbits is set to 96 for
>> > hmac(sha256) in xfrm_algo.c because
>> > RFC4868 [1] says that the truncation length for HMAC-SHA256 should be 128.
>
> See http://comments.gmane.org/gmane.linux.kernel.cryptoapi/6767
>
> Kim
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