Hiya, My question: how does one setup an EVP_PKEY for a NIST curve (e.g. p256) key pair when one has the private key in an octet string using the latest OpenSSL 3.0.0 high level APIs? I'm trying to get rid of deprecation warnings from my code for HPKE [1] when dealing with NIST curves using the new (I guess?) OSSL_PARAM_* approach. I'm failing at the moment;-) So, given an octet string from a set of test vectors (e.g. [2]) what's the proper way to setup an EVP_PKEY for that to allow one to validate the test vectors? Happy to try produce a stand-alone example for this in the next few days if one doesn't exist (I've not found one so far). Thanks, Stephen.[1] https://github.com/sftcd/happykey/blob/7d52d34c516ab58ca1433004ff82b2a6a82eea4c/hpke.c#L1263
[2] https://github.com/cfrg/draft-irtf-cfrg-hpke
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