def test_pack(self):
pw = "password"
jA, jB = JPAKE(pw, signerid="Alice"), JPAKE(pw, signerid="Bob")
m1A, m1B = jA.one(), jB.one()
m1Ap = jA.pack_one(m1A)
#print "m1:", len(json.dumps(m1A)), len(m1Ap)
m2A, m2B = jA.two(m1B), jB.two(jB.unpack_one(m1Ap))
m2Ap = jA.pack_two(m2A)
#print "m2:", len(json.dumps(m2A)), len(m2Ap)
kA, kB = jA.three(m2B), jB.three(jB.unpack_two(m2Ap))
self.failUnlessEqual(hexlify(kA), hexlify(kB))
self.failUnlessEqual(len(kA), len(sha256().digest()))
def test_ascii(self):
self.failUnlessRaises(SignerIDMustBeASCII,
JPAKE,
"pw",
signerid="not-ascii\xff")
jA, jB = JPAKE("pw", signerid="Alice"), JPAKE("pw", signerid="Bob")
m1A = jA.one()
m1Ap = jA.pack_one(m1A)
# now doctor m1Ap to contain non-ascii, to exercise the check in
# unpack_one. We happen to know that the signerid is stored at the
# end of the packed structure
assert m1Ap[-5:] == "Alice"
m1Ap_bad = m1Ap[:-5] + "Alic\xff"
self.failUnlessRaises(SignerIDMustBeASCII, jA.unpack_one, m1Ap_bad)
# same for message two
m2A = jA.two(jB.one())
m2Ap = jA.pack_two(m2A)
assert m2Ap[-5:] == "Alice"
m2Ap_bad = m2Ap[:-5] + "Alic\xff"
self.failUnlessRaises(SignerIDMustBeASCII, jA.unpack_two, m2Ap_bad)
