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From: Christoph Hellwig <hch@lst.de>
To: Hannes Reinecke <hare@suse.de>
Cc: Christoph Hellwig <hch@lst.de>, Hannes Reinecke <hare@kernel.org>,
	Keith Busch <kbusch@kernel.org>, Sagi Grimberg <sagi@grimberg.me>,
	linux-nvme@lists.infradead.org
Subject: Re: [PATCH 04/10] nvme: add nvme_auth_derive_tls_psk()
Date: Tue, 4 Feb 2025 06:23:34 +0100	[thread overview]
Message-ID: <20250204052334.GA28669@lst.de> (raw)
In-Reply-To: <9382676e-6f77-42c0-816d-fd7ac9e8572f@suse.de>

On Mon, Feb 03, 2025 at 02:37:59PM +0100, Hannes Reinecke wrote:
> On 1/28/25 09:58, Christoph Hellwig wrote:
>>> +	info_len = strlen(psk_digest) + strlen(psk_prefix) + 5;
>>
>> Where does the magic 5 come from?
>>
> Two bytes for the HASH ID, two bytes for the length field from
> HKDF-Expand-Label, and one byte for the space separator.

Well, that's information that needs to go here.  If at all possible
using a struct, but otherwise at least using a documented constant.



  reply	other threads:[~2025-02-04  5:23 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-01-22 16:58 [PATCHv14 00/10] nvme: implement secure concatenation Hannes Reinecke
2025-01-22 16:58 ` [PATCH 01/10] crypto,fs: Separate out hkdf_extract() and hkdf_expand() Hannes Reinecke
2025-01-22 16:58 ` [PATCH 02/10] nvme: add nvme_auth_generate_psk() Hannes Reinecke
2025-01-28  8:53   ` Christoph Hellwig
2025-01-28 15:26     ` Hannes Reinecke
2025-01-22 16:58 ` [PATCH 03/10] nvme: add nvme_auth_generate_digest() Hannes Reinecke
2025-01-28  8:56   ` Christoph Hellwig
2025-01-22 16:58 ` [PATCH 04/10] nvme: add nvme_auth_derive_tls_psk() Hannes Reinecke
2025-01-28  8:58   ` Christoph Hellwig
2025-02-03 13:37     ` Hannes Reinecke
2025-02-04  5:23       ` Christoph Hellwig [this message]
2025-01-22 16:58 ` [PATCH 05/10] nvme-keyring: add nvme_tls_psk_refresh() Hannes Reinecke
2025-01-28  9:00   ` Christoph Hellwig
2025-02-03 13:55     ` Hannes Reinecke
2025-01-22 16:58 ` [PATCH 06/10] nvme: always include <linux/key.h> Hannes Reinecke
2025-01-28  9:01   ` Christoph Hellwig
2025-02-03 13:55     ` Hannes Reinecke
2025-01-22 16:58 ` [PATCH 07/10] nvme-tcp: request secure channel concatenation Hannes Reinecke
2025-01-28  9:11   ` Christoph Hellwig
2025-01-28 15:33     ` Hannes Reinecke
2025-02-03 14:06     ` Hannes Reinecke
2025-01-22 16:58 ` [PATCH 08/10] nvme-fabrics: reset admin connection for secure concatenation Hannes Reinecke
2025-01-22 16:58 ` [PATCH 09/10] nvmet-tcp: support secure channel concatenation Hannes Reinecke
2025-01-28  9:15   ` Christoph Hellwig
2025-02-03 14:20     ` Hannes Reinecke
2025-01-22 16:58 ` [PATCH 10/10] nvmet: add tls_concat and tls_key debugfs entries Hannes Reinecke
2025-01-23 22:13 ` [PATCHv14 00/10] nvme: implement secure concatenation Sagi Grimberg
  -- strict thread matches above, loose matches on Subject: below --
2025-02-24 12:38 [PATCHv15 " Hannes Reinecke
2025-02-24 12:38 ` [PATCH 04/10] nvme: add nvme_auth_derive_tls_psk() Hannes Reinecke
2024-12-03 11:02 [PATCHv13 00/10] nvme: implement secure concatenation Hannes Reinecke
2024-12-03 11:02 ` [PATCH 04/10] nvme: add nvme_auth_derive_tls_psk() Hannes Reinecke
2024-12-02 14:29 [PATCHv12 00/10] nvme: implement secure concatenation Hannes Reinecke
2024-12-02 14:29 ` [PATCH 04/10] nvme: add nvme_auth_derive_tls_psk() Hannes Reinecke
2024-12-02 17:04   ` Maurizio Lombardi
2024-12-03 10:27     ` Hannes Reinecke

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