-def sign(curve, prv, digest, rand=None, mode=2001):
+def sign(curve, prv, digest, rand=None):
:returns: signature, BE(S) || BE(R)
:rtype: bytes, 64 or 128 bytes
"""
:returns: signature, BE(S) || BE(R)
:rtype: bytes, 64 or 128 bytes
"""
-def verify(curve, pub, digest, signature, mode=2001):
+def verify(curve, pub, digest, signature):