openssl ext sm2 compatibility

Description

The following code:

<?php
$public_key = openssl_pkey_get_public(file_get_contents('sm2pubkey.pem'));
$d1 = openssl_pkey_get_details($public_key);
var_dump($d1);

Resulted in this output:

  ["dh"]=>
  array(1) {
    ["p"]=> 
  }
  ["type"]=>
  int(2)

But I expected this output instead:

  ["ec"]=>
  array(5) {
    ["curve_name"]=>
    string(9) "sm2"
    ["curve_oid"]=>
    ["x"]=> 
    ["y"]=> 
    ["d"]=> 
  }
  ["type"]=> int(3)

my openssl ext info

OpenSSL support => enabled
OpenSSL Library Version => OpenSSL 3.0.2 15 Mar 2022
OpenSSL Header Version => OpenSSL 3.0.2 15 Mar 2022
Openssl default config => /usr/lib/ssl/openssl.cnf

Directive => Local Value => Master Value
openssl.cafile => no value => no value
openssl.capath => no value => no value

the sm2pubkey.pem generate command
openssl ecparam -name SM2 -genkey -noout -out sm2-key.pem
openssl ec -in sm2-key.pem -pubout -out sm2pubkey.pem

PHP Version

8.1.2

Operating System

Ubuntu 22.04.1 LTS

Reproduce the report with PHP 8.1.2, OpenSSL 3.0.2, and the provided openssl ecparam and openssl ec commands. Start from the openssl_pkey_get_public() and openssl_pkey_get_details() entry points, then compare the returned structure with the expected SM2 EC details. Done means SM2 public keys are reported as EC keys with the expected curve information.