linux-kernel - Re: [PATCH v2 2/2] crypto: caam - strip input without changing crypto request

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <VI1PR04MB4445FB86FB1FF3EA412241E48C090@VI1PR04MB4445.eurprd04.prod.outlook.com>
Date:   Wed, 15 May 2019 14:00:38 +0000
From:   Iuliana Prodan <iuliana.prodan@....com>
To:     Horia Geanta <horia.geanta@....com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Aymen Sghaier <aymen.sghaier@....com>
CC:     "David S. Miller" <davem@...emloft.net>,
        "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>
Subject: Re: [PATCH v2 2/2] crypto: caam - strip input without changing crypto
 request

On 5/15/2019 3:59 PM, Horia Geanta wrote:
> On 5/15/2019 2:25 PM, Iuliana Prodan wrote:
>> For rsa/pkcs1pad(rsa-caam, sha256), CAAM expects an input of modulus size.
> Only for sha256?
No, is not just sha256. Is a combination of rsa-caam and a hash 
algorithm. I'll send a new version to fix the commit message.
> 
>> For this we strip the leading zeros in case the size is more than modulus.
>> This commit avoids modifying the crypto request while striping zeros from
>                                                          ^^^ stripping
> 
> Horia
>