def test_seed_to_xprv(self):
# Transform seed to xprv object
seed = unhexlify('000102030405060708090a0b0c0d0e0f')
xprv = BIP32.get_xprv_from_seed(seed)
# Load xprv object to pycoin wallet
xprv1 = pywallet.Wallet(chain_code=xprv.chain_code,
secret_exponent_bytes=xprv.private_key,
parent_fingerprint=struct.pack('I', xprv.fingerprint),
depth=xprv.depth,
child_number=xprv.child_num,
is_private=True,
is_test=False)
# Load the same seed to pycoin wallet directly
xprv2 = pywallet.Wallet.from_master_secret(seed)
# ...and compare them
self.assertEqual(xprv1.wallet_key(as_private=True), xprv2.wallet_key(as_private=True))
def test_signing(self):
seed = unhexlify('c882685a2859016f26ea3b95d3d06929') # tools.generate_seed(tools.STRENGTH_LOW, '')
data = 'nazdar bazar'
hsh = sha256(data).digest()
# Generate secexp
xprv = BIP32.get_xprv_from_seed(seed)
bip32 = BIP32(xprv)
# Get signing key and sign some data
signing = bip32._get_master_private_key()
signature = signing.sign_digest_deterministic(hsh, sha256)
# Transform secexp into master public key
master_public_key = bip32.get_master_public_key()
# Load verifying class from master public key
verifying = VerifyingKey.from_string(unhexlify(master_public_key), SECP256k1)
# Check that signature is valid using master public key
self.assertTrue(verifying.verify(signature, data, sha256))
