linux-kernel - Re: [PATCH v2 2/2] fscrypt: Add SM4 XTS/CTS symmetric algorithm support

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Message-ID: <Y30hjJq1Vwl4k1dJ@sol.localdomain>
Date:   Tue, 22 Nov 2022 11:22:52 -0800
From:   Eric Biggers <ebiggers@...nel.org>
To:     Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
Cc:     "Theodore Y. Ts o" <tytso@....edu>,
        Jaegeuk Kim <jaegeuk@...nel.org>,
        Jonathan Corbet <corbet@....net>, Jens Axboe <axboe@...nel.dk>,
        Ard Biesheuvel <ardb@...nel.org>,
        linux-fscrypt@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-block@...r.kernel.org
Subject: Re: [PATCH v2 2/2] fscrypt: Add SM4 XTS/CTS symmetric algorithm
 support

On Tue, Nov 22, 2022 at 03:06:32PM +0800, Tianjia Zhang wrote:
> SM4 is a symmetric algorithm widely used in China, this patch enables
> to use SM4-XTS mode to encrypt file content, and use SM4-CBC-CTS to
> encrypt filename.
> 
> Signed-off-by: Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>

There is still no explanation here about why you believe this algorithm is
useful to support in fscrypt.

- Eric