GOST_KEY_get0_public_key
pub_key = GOST_KEY_get0_public_key(ec);
const EC_POINT *pub_key = GOST_KEY_get0_public_key(pkey);
ka = GOST_KEY_get0_public_key(ea);
kb = GOST_KEY_get0_public_key(eb);
pub_key = GOST_KEY_get0_public_key(ec);
pubkey = GOST_KEY_get0_public_key(pkey->pkey.gost);
const EC_POINT * GOST_KEY_get0_public_key(const GOST_KEY * key);