(@url{https://tools.ietf.org/html/rfc7091.html, RFC 7091})
public key signature function
@item various 34.10 curve parameters included
+@item Coordinates conversion from twisted Edwards to Weierstrass
+ form and vice versa
@item VKO GOST R 34.10-2001 key agreement function
(@url{https://tools.ietf.org/html/rfc4357.html, RFC 4357})
@item VKO GOST R 34.10-2012 key agreement function
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