Example 34.10-2012 keypair generation, signing and verifying:
@verbatim
->>> from pygost.gost3410 import CURVE_PARAMS
->>> from pygost.gost3410 import GOST3410Curve
->>> curve = GOST3410Curve(*CURVE_PARAMS["id-tc26-gost-3410-12-512-paramSetA"])
+>>> from pygost.gost3410 import CURVES
+>>> curve = CURVES["id-tc26-gost-3410-12-512-paramSetA"]
>>> from os import urandom
>>> prv_raw = urandom(32)
>>> from pygost.gost3410 import prv_unmarshal