>>> from pygost.gost3410 import CURVES
>>> curve = CURVES["id-tc26-gost-3410-12-512-paramSetA"]
>>> from os import urandom
>>> from pygost.gost3410 import CURVES
>>> curve = CURVES["id-tc26-gost-3410-12-512-paramSetA"]
>>> from os import urandom
>>> from pygost.gost3410 import prv_unmarshal
>>> prv = prv_unmarshal(prv_raw)
>>> from pygost.gost3410 import public_key
>>> from pygost.gost3410 import prv_unmarshal
>>> prv = prv_unmarshal(prv_raw)
>>> from pygost.gost3410 import public_key
>>> from pygost.gost3410 import pub_marshal
>>> from pygost.utils import hexenc
>>> print "Public key is:", hexenc(pub_marshal(pub))
>>> from pygost.gost3410 import pub_marshal
>>> from pygost.utils import hexenc
>>> print "Public key is:", hexenc(pub_marshal(pub))
->>> verify(curve, pub, dgst, signature, mode=2012)
+>>> verify(curve, pub, dgst, signature)