def test_params(self):
opps = 1500000
# memory limited
self.failUnlessEqual(pick_params(MiB, 1.0, opps), (1024,8,45))
self.failUnlessEqual(pick_params(MiB, 2.0, opps), (1024,8,91))
self.failUnlessEqual(pick_params(MiB, 3.0, opps), (1024,8,137))
self.failUnlessEqual(pick_params(MiB, 4.0, opps), (1024,8,183))
self.failUnlessEqual(pick_params(100*MiB, 3.0, opps), (65536,8,2))
# cpu limited
self.failUnlessEqual(pick_params(100*MiB, 1.0, opps), (32768,8,1))
self.failUnlessEqual(pick_params(100*MiB, 2.0, opps), (65536,8,1))
# and check that it can measure the CPU time itself
N,r,p = pick_params(MiB, 1.0)
self.failUnlessEqual(r, 8) # this one is hard-coded
memory = 128*N*r
self.failUnless(memory <= MiB, (memory, MiB))
class Oops(Exception):
pass
KW1 = "[email protected]:1"
KW2 = "[email protected]:2"
KW3 = "[email protected]:3"
MB = 1000*1000
def netstring(s):
return "%d:%s." % (len(s), s)
def plus(*strings):
return "".join([netstring(s) for s in strings])
c1 = 10000
c2 = 10000
N,r,p = pick_params(maxmem=100*MB, maxtime=1.0)
print N,r,p
dkLen = 256/8
email = "*****@*****.**"
password = "******"
if False:
Tstart = time.time()
A = PBKDF2(password=password, salt=plus(KW1, email), c=c1, dkLen=dkLen)
Ta = time.time()
print "time[A]:", Ta-Tstart
B = scrypt(password=A, salt=plus(KW2, email), N=N,r=r,p=p, dkLen=256/8)
Tb = time.time()
print "time[B]:", Tb-Ta
C = PBKDF2(password=plus(password,B), salt=plus(KW3, email), c=c2, dkLen=3*dkLen)