test_RSA.py 文件源码

def _exercise_primitive(self, rsaObj):
        # Since we're using a randomly-generated key, we can't check the test
        # vector, but we can make sure encryption and decryption are inverse
        # operations.
        ciphertext = a2b_hex(self.ciphertext)

        # Test decryption
        plaintext = rsaObj.decrypt((ciphertext,))

        # Test encryption (2 arguments)
        (new_ciphertext2,) = rsaObj.encrypt(plaintext, b(""))
        self.assertEqual(b2a_hex(ciphertext), b2a_hex(new_ciphertext2))

        # Test blinded decryption
        blinding_factor = Random.new().read(len(ciphertext)-1)
        blinded_ctext = rsaObj.blind(ciphertext, blinding_factor)
        blinded_ptext = rsaObj.decrypt((blinded_ctext,))
        unblinded_plaintext = rsaObj.unblind(blinded_ptext, blinding_factor)
        self.assertEqual(b2a_hex(plaintext), b2a_hex(unblinded_plaintext))

        # Test signing (2 arguments)
        signature2 = rsaObj.sign(ciphertext, b(""))
        self.assertEqual((bytes_to_long(plaintext),), signature2)

        # Test verification
        self.assertEqual(1, rsaObj.verify(ciphertext, (bytes_to_long(plaintext),)))