Python:eccでJose alg=ES512 #Python

python-edcsa より簡単な気が。

インストール:

$ pip install ecc

Jose alg=ES512 (ECDSA using P-521 curve and SHA-512):

    class TestEcKeyEcc(unittest.TestCase):

        def test_generate(self):
            from ecc.Key import Key 

            pri = Key.generate(521)
            self.assertTrue(isinstance(pri, Key))
            self.assertTrue(pri.private())

            pub = Key.decode(pri.encode())
            self.assertTrue(isinstance(pub, Key))
            self.assertFalse(pub.private())

            msg = "hello, it's me."
            sig = pri.sign(msg, hashfunc='sha512')  # default sha256
            self.assertTrue(pub.verify(msg, sig, hashfunc='sha512'))