[PATCH 0/2] tpm: use SM3 instead of SM3_256
James Bottomley
jejb at linux.ibm.com
Sat Oct 9 13:29:52 UTC 2021
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
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