[PATCH v1 2/5] lib: implement SM3 secure hash

[Heiko Schocher]

Hello Raymond,

On 01.11.25 18:11, Raymond Mao wrote:
> Hi Heiko,
> 
> On Sat, Nov 1, 2025 at 2:49 AM Heiko Schocher <hs at nabladev.com <mailto:hs at nabladev.com>> wrote:
> 
>     Implement SM3 secure hash algorithm, as specified by
>     OSCCA GM/T 0004-2012 SM3 and described
>     at https://datatracker.ietf.org/doc/html/draft-sca-cfrg-sm3-02
>     <https://datatracker.ietf.org/doc/html/draft-sca-cfrg-sm3-02>
> 
>     code is based on linux commit
>     f83a4f2a4d8c: ("Merge tag 'erofs-for-6.17-rc6-fixes' of
>     git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
>     <http://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs>")
> 
>     Signed-off-by: Heiko Schocher <hs at nabladev.com <mailto:hs at nabladev.com>>
>     ---
>     This patch drops a lot of checkpatch warnings, ignored them
>     as tried to stay as close as possible with linux code.
> 
> MbedTLS also supports SMx, can you turn on the SM3 option in MbedTLS and make it selectable between 
> lib/sm3 and MbedTLS via Kconfig? Just like what we have for other algorithms.

I must admit, I have never used MbedTLS ...

[u-boot]$ find lib/mbedtls/ -name '*sm3'
[u-boot]$

So there is no sm3 header or c file...

[u-boot]$ find lib/mbedtls/ -name 'sha*'
lib/mbedtls/sha256.c
lib/mbedtls/sha512.c
lib/mbedtls/sha1.c
lib/mbedtls/port/sha512_alt.h
lib/mbedtls/port/sha1_alt.h
lib/mbedtls/port/sha256_alt.h
lib/mbedtls/external/mbedtls/library/sha256.c
lib/mbedtls/external/mbedtls/library/sha3.c
lib/mbedtls/external/mbedtls/library/sha512.c
lib/mbedtls/external/mbedtls/library/sha1.c
[...]

But I find for sha* ... so I am unsure what you mean now, what I
should do/change?

May this can be added in a follow up patch?
Maybe you can add this part?

Thanks!

bye,
Heiko
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