[Bug]: SM3 HMAC fails when using the EVP_DigestSign APIs because wolfSSL_HmacCopy doesn't consider SM3

[colmenero]

Contact Details

colmenero@rti.com

Version

5.8.2

Description

I'm using wolfSSL in combination with wolfSM and computing an SM3 HMAC fails because wolfSSL_HmacCopy doesn't consider SM3. See relevant code here.

Note that wolfSSL_EVP_DigestInit does consider SM3. So I think this is a bug.

Reproduction steps

I'm attaching a simple program, built statically, where you can reproduce the exact behavior.

hmac_sm3_wolfssl.zip

Relevant log output

No relevant output. `EVP_DigestSignFinal` Simply fails.

[embhorn]

Hello @colmenero

Thanks for contacting wolfSSL Support. We have not integrated the SM component into the EVP stack yet. We would be interested in hearing more about your project and adding this to our feature list for future development.

Could you please send an email to support@wolfssl.com to get that process started?

Thanks,
@embhorn - wolfSSL Support