test_DSA.py 文件源码

def _check_public_key(self, dsaObj):
        k = a2b_hex(self.k)
        m_hash = a2b_hex(self.m_hash)

        # Check capabilities
        self.assertEqual(0, dsaObj.has_private())
        self.assertEqual(1, dsaObj.can_sign())
        self.assertEqual(0, dsaObj.can_encrypt())
        self.assertEqual(0, dsaObj.can_blind())

        # Check dsaObj.[ygpq] -> dsaObj.key.[ygpq] mapping
        self.assertEqual(dsaObj.y, dsaObj.key.y)
        self.assertEqual(dsaObj.g, dsaObj.key.g)
        self.assertEqual(dsaObj.p, dsaObj.key.p)
        self.assertEqual(dsaObj.q, dsaObj.key.q)

        # Check that private parameters are all missing
        self.assertEqual(0, hasattr(dsaObj, 'x'))
        self.assertEqual(0, hasattr(dsaObj.key, 'x'))

        # Sanity check key data
        self.assertEqual(1, dsaObj.p > dsaObj.q)            # p > q
        self.assertEqual(160, size(dsaObj.q))               # size(q) == 160 bits
        self.assertEqual(0, (dsaObj.p - 1) % dsaObj.q)      # q is a divisor of p-1

        # Public-only key objects should raise an error when .sign() is called
        self.assertRaises(TypeError, dsaObj.sign, m_hash, k)

        # Check __eq__ and __ne__
        self.assertEqual(dsaObj.publickey() == dsaObj.publickey(),True) # assert_
        self.assertEqual(dsaObj.publickey() != dsaObj.publickey(),False) # failIf