Re: [PATCH v3 2/2] fscrypt: Add SM4 XTS/CTS symmetric algorithm support

[Tianjia Zhang]

Hi Bagas,

On 11/28/22 9:33 PM, Bagas Sanjaya wrote:
> On 11/25/22 19:16, Tianjia Zhang wrote:
> > SM4 is a symmetric algorithm widely used in China, and is even mandatory
> > in many scenarios. We need to provide these users with the ability to
> > encrypt files or disks using SM4-XTS, and many other algorithms that use
> > SM2/3/4 algorithms or their combined algorithm scenarios, these features
> > are demanded by many users, this patch enables to use SM4-XTS mode to
> > encrypt file content, and use SM4-CBC-CTS to encrypt filename.
>
> Similar reply as [1]. That is, better say:
>
> ```
> Add support for XTS and CTS mode variant of SM4 algorithm, in similar
> fashion to SM2 and SM3. The former is used to encrypt file contents, while
> the latter (SM4-CBC-CTS) is used to encrypt filenames.
> ```
>
> Thanks.
>
> [1]: https://lore.kernel.org/linux-doc/42624542-6ccb-26a5-db98-d7944972246e@xxxxxxxxx/

Thanks for your reply, it is very valuable for me, I will update it in
the next patch.

Cheers,
Tianjia