<can we convert keys in BIGNUM format to EVP_PKEY format>

[Narayana, Sunil Kumar]

Dear Openssl team,
                While migrating from 1.0.2 to 3.0 we are stuck in replacing DH_compute_key() with its equivalent EVP_PKEY_derive()
The input we have is of type (BIGNUM  *bn_peer_publicKey / bn_privateKey). But the example showed in the man page
EVP_PKEY_derive_init ...  requires the peer_publickey/privatekey  in EVP_PKEY format. we are not finding the way to convert the BIGNUM keys to EVP_PKEY.
Please suggest the required steps to achieve the compute key functionality using the existing BIGNUM private and peer public keys


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