def make_ed25519_condition(public_key, *, amount=1):
ed25519 = Ed25519Sha256(public_key=base58.b58decode(public_key))
return {
'amount': str(amount),
'condition': {
'details': _fulfillment_to_details(ed25519),
'uri': ed25519.condition_uri,
},
'public_keys': (public_key,),
}
def persisted_transfer_carol_car_to_dimi(carol_keypair, dimi_pubkey,
transactions_api_full_url,
persisted_carol_car_transaction):
output_txid = persisted_carol_car_transaction['id']
ed25519_dimi = Ed25519Sha256(public_key=base58.b58decode(dimi_pubkey))
transaction = {
'asset': {
'id': output_txid
},
'metadata':
None,
'operation':
'TRANSFER',
'outputs': ({
'amount': '1',
'condition': {
'details': _fulfillment_to_details(ed25519_dimi),
'uri': ed25519_dimi.condition_uri,
},
'public_keys': (dimi_pubkey, ),
}, ),
'inputs': ({
'fulfillment': None,
'fulfills': {
'output_index': 0,
'transaction_id': output_txid,
},
'owners_before': (carol_keypair.public_key, ),
}, ),
'version':
'2.0',
'id':
None,
}
serialized_transaction = json.dumps(
transaction,
sort_keys=True,
separators=(',', ':'),
ensure_ascii=False,
)
serialized_transaction = sha3_256(serialized_transaction.encode())
if transaction['inputs'][0]['fulfills']:
serialized_transaction.update('{}{}'.format(
transaction['inputs'][0]['fulfills']['transaction_id'],
transaction['inputs'][0]['fulfills']['output_index']).encode())
ed25519_carol = Ed25519Sha256(
public_key=base58.b58decode(carol_keypair.public_key))
ed25519_carol.sign(serialized_transaction.digest(),
base58.b58decode(carol_keypair.private_key))
transaction['inputs'][0]['fulfillment'] = ed25519_carol.serialize_uri()
set_transaction_id(transaction)
response = requests.post(transactions_api_full_url, json=transaction)
return response.json()