linux-kernel - Re: [PATCH v2 2/3] accel/amdpk: add driver for AMD PKI accelerator

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: <5f49d271-fdf3-3b52-664a-3f576bc3c61e@amd.com>
Date: Thu, 17 Apr 2025 21:02:15 +0530
From: "Gupta, Nipun" <nipun.gupta@....com>
To: Herbert Xu <herbert@...dor.apana.org.au>
Cc: Krzysztof Kozlowski <krzk@...nel.org>, davem@...emloft.net,
 dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, krzk+dt@...nel.org,
 gregkh@...uxfoundation.org, robh@...nel.org, conor+dt@...nel.org,
 ogabbay@...nel.org, maarten.lankhorst@...ux.intel.com, mripard@...nel.org,
 tzimmermann@...e.de, airlied@...il.com, simona@...ll.ch,
 derek.kiernan@....com, dragan.cvetic@....com, arnd@...db.de,
 praveen.jain@....com, harpreet.anand@....com, nikhil.agarwal@....com,
 srivatsa@...il.mit.edu, code@...icks.com, ptsm@...ux.microsoft.com,
 linux-crypto@...r.kernel.org, David Howells <dhowells@...hat.com>,
 Lukas Wunner <lukas@...ner.de>, Ignat Korchagin <ignat@...udflare.com>,
 keyrings@...r.kernel.org
Subject: Re: [PATCH v2 2/3] accel/amdpk: add driver for AMD PKI accelerator



On 12-04-2025 06:53, Herbert Xu wrote:
> On Fri, Apr 11, 2025 at 11:50:54PM +0530, Gupta, Nipun wrote:
>>
>> AFAIU after looking into it, the keyring subsystem is not to perform the
>> data operations, but for managing keys for these operations. Kindly correct
>> me if I am wrong here.
> 
> Have a look at
> 
> security/keys/keyctl_pkey.c

Thanks for pointing out to the C file, but as these these system calls 
can support only synchronous operations, precludes their use for 
asynchronous operations. In the TLS handshakes, where multiple 
connections occur simultaneously, asynchronous operations are 
beneficial. OpenSSL ASYNC support can very well utilizes the 
asynchronous operations while establishing multiple TLS connections.

Thanks,
Nipun