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From: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
To: Vadim Fedorenko <vfedorenko@novek.ru>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Boris Pismenny <borisp@nvidia.com>,
	John Fastabend <john.fastabend@gmail.com>,
	Daniel Borkmann <daniel@iogearbox.net>,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] net/tls: support SM4 CCM algorithm
Date: Thu, 30 Sep 2021 11:34:33 +0800	[thread overview]
Message-ID: <1195374a-a9d4-0431-015b-60d986e29881@linux.alibaba.com> (raw)
In-Reply-To: <1761d06d-0958-7872-04de-cde6ddf8a948@novek.ru>

Hi Vadim,

On 9/29/21 5:24 AM, Vadim Fedorenko wrote:
> On 28.09.2021 07:28, Tianjia Zhang wrote:
>> The IV of CCM mode has special requirements, this patch supports CCM
>> mode of SM4 algorithm.
>>
> Have you tried to connect this implementation to application with
> user-space implementation of CCM mode? I wonder just because I have an
> issue with AES-CCM Kernel TLS implementation when it's connected to
> OpenSSL-driven server, but still have no time to fix it correctly.

I did not encounter any issue when using KTLS with AES-CCM algorithm, 
but the KTLS RX mode on the OpenSSL side does not seem to be supported.

I encountered some problems when using the SM4-CCM algorithm of KTLS. 
Follow the RFC8998 specification, the handshake has been successful, and 
the first data transmission can be successful. After that, I will 
encounter the problem of MAC verification failure, but this is issue on 
the OpenSSL side. because the problem is still being investigated, I 
have not opened the code for the time being.

Cheers,
Tianjia

  reply	other threads:[~2021-09-30  3:34 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-28  6:28 [PATCH] net/tls: support SM4 CCM algorithm Tianjia Zhang
2021-09-28 12:30 ` patchwork-bot+netdevbpf
2021-09-28 21:24 ` Vadim Fedorenko
2021-09-30  3:34   ` Tianjia Zhang [this message]
2021-09-30 22:56     ` Vadim Fedorenko
2021-10-08  3:24       ` Tianjia Zhang

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