From: Herbert Xu <herbert@gondor.apana.org.au>
To: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: "linux-crypto@vger.kernel.org" <linux-crypto@vger.kernel.org>
Subject: Re: [PATCH -stable] crypto: ccm - deal with CTR ciphers that honour iv_out
Date: Thu, 2 Feb 2017 13:13:00 +0800 [thread overview]
Message-ID: <20170202051300.GA4349@gondor.apana.org.au> (raw)
In-Reply-To: <CAKv+Gu9Em15JVQOo9civMMWOtwBR0R_a+K0P1Y-JOZJU5zPtnw@mail.gmail.com>
On Wed, Feb 01, 2017 at 08:08:09PM +0000, Ard Biesheuvel wrote:
>
> Could you please forward this patch to Linus as well? I noticed that the patch
Sure, I will do that.
> crypto: arm64/aes-blk - honour iv_out requirement in CBC and CTR modes
>
> is now in mainline, which means CCM is now broken on arm64, given that
> the iv_out requirement for CTR apparently isn't honored by *any*
> implementation, and CCM wrongly assumes that req->iv retains its value
> across the call into the CTR skcipher
Hmm, I wonder why we don't see this breakage with the generic
CTR as it seems to do exactly the same thing.
Cheers,
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
next prev parent reply other threads:[~2017-02-02 6:00 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-28 20:40 [PATCH -stable] crypto: ccm - deal with CTR ciphers that honour iv_out Ard Biesheuvel
2017-02-01 20:08 ` Ard Biesheuvel
2017-02-02 5:13 ` Herbert Xu [this message]
2017-02-02 8:01 ` Ard Biesheuvel
2017-02-02 9:53 ` Herbert Xu
2017-02-02 11:39 ` Ard Biesheuvel
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