def get_random_num(bits):
"""
Draw a random number of given bitlength.
>>> x = get_random_num(6)
>>> x < 2**6
True
"""
order = Bn(2).pow(bits)
return order.random()
for gid in curves:
G = EcGroup(gid)
gx = G.order().random() * G.generator()
rnd = [G.order().random() for _ in range(100)]
t0 = time.clock()
for r in rnd:
dud = r * gx
t1 = time.clock()
repreats = 1000
t = []
for x in [2, 200]:
o = Bn(2) ** x
tests = [o.random() for _ in range(repreats)]
tx = time.clock()
for y in tests:
dud = y * gx
t += [time.clock() - tx]
# print(x, t[-1] / repreats)
if abs(t[0] - t[-1]) < 5.0 / 100:
const = "CONST"
else:
const = "NOCONST"
timings += [((t1-t0)*1000.0/100.0, gid, const)]
timings = sorted(timings)
