test_DSA.py 文件源码

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

        # Check dsaObj.[ygpqx] -> dsaObj.key.[ygpqx] 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)
        self.assertEqual(dsaObj.x, 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
        self.assertEqual(dsaObj.y, pow(dsaObj.g, dsaObj.x, dsaObj.p))     # y == g**x mod p
        self.assertEqual(1, 0 < dsaObj.x < dsaObj.q)       # 0 < x < q