def address_from_digest(digest: Digest) -> Address:
"""
Generates an address from a private key digest.
"""
address_trits: List[int] = [0] * (Address.LEN * TRITS_PER_TRYTE)
sponge = Kerl()
sponge.absorb(digest.as_trits())
sponge.squeeze(address_trits)
return Address.from_trits(
trits=address_trits,
key_index=digest.key_index,
security_level=digest.security_level,
)
def add_digest(self, digest: Digest) -> None:
"""
Absorbs a digest into the sponge.
.. important::
Keep track of the order that digests are added!
To spend inputs from a multisig address, you must provide
the private keys in the same order!
References:
- https://github.com/iotaledger/wiki/blob/master/multisigs.md#spending-inputs
"""
if self._address:
raise ValueError(
'Cannot add digests once an address is extracted.')
self._sponge.absorb(digest.as_trits())
self._digests.append(digest)
