ossl_cmp_ctx_get0_newPubkey
rkey = ossl_cmp_ctx_get0_newPubkey(ctx);
EVP_PKEY *ossl_cmp_ctx_get0_newPubkey(const OSSL_CMP_CTX *ctx);
EVP_PKEY *rkey = ossl_cmp_ctx_get0_newPubkey(ctx);