def get_zkey_from_sk(self, sk: str, d: str = None) -> dict:
"""Get the shielded address from sk(spending key) and d(diversifier)."""
if len(sk) != 64:
raise BadKey("32 byte sk required")
if d and len(d) != 22:
raise BadKey("11 byte d required")
esk = self.provider.make_request("wallet/getexpandedspendingkey", {"value": sk})
ask = esk["ask"]
nsk = esk["nsk"]
ovk = esk["ovk"]
ak = self.provider.make_request("wallet/getakfromask", {"value": ask})["value"]
nk = self.provider.make_request("wallet/getnkfromnsk", {"value": nsk})["value"]
ivk = self.provider.make_request("wallet/getincomingviewingkey", {"ak": ak, "nk": nk})["ivk"]
if d is None:
d = self.provider.make_request("wallet/getdiversifier")["d"]
ret = self.provider.make_request("wallet/getzenpaymentaddress", {"ivk": ivk, "d": d})
pkD = ret["pkD"]
payment_address = ret["payment_address"]
return dict(
sk=sk, ask=ask, nsk=nsk, ovk=ovk, ak=ak, nk=nk, ivk=ivk, d=d, pkD=pkD, payment_address=payment_address,
)
def sign(self, priv_key: PrivateKey) -> "Transaction":
"""Sign the transaction with a private key."""
assert self.txid, "txID not calculated"
if self._permission is not None:
addr_of_key = priv_key.public_key.to_hex_address()
for key in self._permission["keys"]:
if key["address"] == addr_of_key:
break
else:
raise BadKey(
"provided private key is not in the permission list",
"provided {}".format(priv_key.public_key.to_base58check_address()),
"required {}".format(self._permission),
)
sig = priv_key.sign_msg_hash(bytes.fromhex(self.txid))
self._signature.append(sig.hex())
return self