[PATCH 0/2] tpm: use SM3 instead of SM3_256
Tianjia Zhang
tianjia.zhang at linux.alibaba.com
Mon Oct 11 07:02:24 UTC 2021
Hi James,
On 10/9/21 9:29 PM, James Bottomley wrote:
> On Sat, 2021-10-09 at 21:08 +0800, Tianjia Zhang wrote:
>> According to https://tools.ietf.org/id/draft-oscca-cfrg-sm3-01.html,
>> SM3 always produces a 256-bit hash value and there are no plans for
>> other length development, so there is no ambiguity in the name of
>> sm3.
>
> For the TPM we're following the TPM Library specification
>
> https://trustedcomputinggroup.org/resource/tpm-library-specification/
>
> Which is very clear: the algorithm name is TPM_ALG_SM3_256
>
> We're using sm3 as our exposed name because that's what linux crypto
> uses, so there should be no problem in what the end user sees, but
> changing to non standard TPM definitions is only going to cause
> confusion at the kernel level.
>
> James
>
Thanks for your attention. This is really tricky. I will contact
trustedcomputinggroup first and give some suggestions, It would be best
if a more standard algorithm name can be used from the source of the
specification.
I think the macro definition of the crypto directory can remove this
suffix first, that is, apply patch 1. What's your opinion?
Best regards,
Tianjia
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