prv = prv_unmarshal(prv_raw)
curve = CURVES["id-tc26-gost-3410-12-512-paramSetA"]
pub_raw = pub_marshal(public_key(curve, prv), mode=2012)
prv = prv_unmarshal(prv_raw)
curve = CURVES["id-tc26-gost-3410-12-512-paramSetA"]
pub_raw = pub_marshal(public_key(curve, prv), mode=2012)