test_bigfile.py 文件源码

def test_sign_verify_bigfile(self):

        # Large enough to store MD5-sum and ASN.1 code for MD5
        pub_key, priv_key = rsa.newkeys((34 + 11) * 8)

        # Sign the file
        msgfile = BytesIO(b('123456Sybren'))
        signature = pkcs1.sign(msgfile, priv_key, 'MD5')

        # Check the signature
        msgfile.seek(0)
        self.assertTrue(pkcs1.verify(msgfile, signature, pub_key))

        # Alter the message, re-check
        msgfile = BytesIO(b('123456sybren'))
        self.assertRaises(pkcs1.VerificationError,
            pkcs1.verify, msgfile, signature, pub_key)