qif 1.2.1

Quantitative Information Flow library

libqif

Install

pip install qif

• Needs python >= 3.6 and a sandybridge or later CPU
• On linux pip >= 19 is needed (make sure to pip install -U pip)

A sample program

from qif import *

def compute_bayes(C):
	pi = probab.uniform(C.shape[0])

	print("Channel:\n", C)
	print("Prior:\n", pi)

	print("Bayes vulnerability", measure.bayes_vuln.posterior(pi, C))
	print("Bayes mult-capacity", measure.bayes_vuln.mult_capacity(C))

compute_bayes(channel.randu(5))

# same, but using rational arithmetic
qif.set_default_type(qif.rat)

C = np.array([
	[rat(1,2), rat(1,4), rat(1,4)],
	[rat(1,6), rat(3,6), rat(2,6)],
	[rat(1,2), rat(1,2), rat(0)],
])
compute_bayes(C)

Documentation

A list of methods provided by qif is available here.

Use libqif with C++

See the installation instructions.