def test_deterministic_signatures(self, sk, msg, sig):
"""
See RFC6979 for explanation
https://tools.ietf.org/html/rfc6979#section-3.2
"""
key = Key(sk)
signature = key.sign(msg)
self.assertEqual(sig, signature)
def sign(self, key):
if isinstance(key, str):
key = Key(key)
if not isinstance(key, Key):
raise ValueError('Base58 encoded secret key or Key instance required.')
self._data['signature'] = key.sign(self.unsigned_bytes(), generic=True)
return self._data['signature']
def test_sign_and_verify(self, sk, msg):
key = Key(sk)
sig = key.sign(msg)
key.verify(sig, msg)
self.assertRaises(ValueError, key.verify, sig, b'fake')