The checks of the type of EVP_PKEY were from before we had the macro
evp_pkey_is_provided().
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14056)
They were calling evp_keymgmt_set_params() directly. Those calls are
changed to go through EVP_PKEY_set_params().
We take the opportunity to constify these functions. They have to
unconstify internally for the compiler to stop complaining when
placing those pointers in an OSSL_PARAM element, but that's still
better than forcing the callers to do that cast.
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14056)
