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* adjusted to neweest transaction package * adjusted to new planetmint-cryptoconditions imports * added Changelog and increased version Signed-off-by: Jürgen Eckel <juergen@riddleandcode.com>
177 lines
5.7 KiB
Python
177 lines
5.7 KiB
Python
import json
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import base58
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from hashlib import sha3_256
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from zenroom import zencode_exec
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from planetmint_cryptoconditions.types.zenroom import ZenroomSha256
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from transactions.common.crypto import generate_key_pair
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from ipld import multihash, marshal
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CONDITION_SCRIPT = """Scenario 'ecdh': create the signature of an object
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Given I have the 'keyring'
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Given that I have a 'string dictionary' named 'houses'
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When I create the signature of 'houses'
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Then print the 'signature'"""
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FULFILL_SCRIPT = """Scenario 'ecdh': Bob verifies the signature from Alice
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Given I have a 'ecdh public key' from 'Alice'
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Given that I have a 'string dictionary' named 'houses'
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Given I have a 'signature' named 'signature'
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When I verify the 'houses' has a signature in 'signature' by 'Alice'
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Then print the string 'ok'"""
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SK_TO_PK = """Scenario 'ecdh': Create the keypair
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Given that I am known as '{}'
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Given I have the 'keyring'
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When I create the ecdh public key
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When I create the bitcoin address
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Then print my 'ecdh public key'
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Then print my 'bitcoin address'"""
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GENERATE_KEYPAIR = """Scenario 'ecdh': Create the keypair
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Given that I am known as 'Pippo'
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When I create the ecdh key
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When I create the bitcoin key
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Then print keyring"""
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INITIAL_STATE = {"also": "more data"}
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SCRIPT_INPUT = {
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"houses": [
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{
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"name": "Harry",
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"team": "Gryffindor",
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},
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{
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"name": "Draco",
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"team": "Slytherin",
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},
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],
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}
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metadata = {"units": 300, "type": "KG"}
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def test_zenroom_signing():
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biolabs = generate_key_pair()
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version = "3.0"
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alice = json.loads(zencode_exec(GENERATE_KEYPAIR).output)["keyring"]
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bob = json.loads(zencode_exec(GENERATE_KEYPAIR).output)["keyring"]
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zen_public_keys = json.loads(zencode_exec(SK_TO_PK.format("Alice"), keys=json.dumps({"keyring": alice})).output)
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zen_public_keys.update(json.loads(zencode_exec(SK_TO_PK.format("Bob"), keys=json.dumps({"keyring": bob})).output))
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zenroomscpt = ZenroomSha256(script=FULFILL_SCRIPT, data=INITIAL_STATE, keys=zen_public_keys)
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print(f"zenroom is: {zenroomscpt.script}")
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# CRYPTO-CONDITIONS: generate the condition uri
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condition_uri_zen = zenroomscpt.condition.serialize_uri()
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print(f"\nzenroom condition URI: {condition_uri_zen}")
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# CRYPTO-CONDITIONS: construct an unsigned fulfillment dictionary
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unsigned_fulfillment_dict_zen = {
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"type": zenroomscpt.TYPE_NAME,
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"public_key": base58.b58encode(biolabs.public_key).decode(),
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}
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output = {
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"amount": "10",
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"condition": {
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"details": unsigned_fulfillment_dict_zen,
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"uri": condition_uri_zen,
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},
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"public_keys": [
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biolabs.public_key,
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],
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}
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input_ = {
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"fulfillment": None,
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"fulfills": None,
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"owners_before": [
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biolabs.public_key,
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],
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}
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script_ = {
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"code": {"type": "zenroom", "raw": "test_string", "parameters": [{"obj": "1"}, {"obj": "2"}]},
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"state": "dd8bbd234f9869cab4cc0b84aa660e9b5ef0664559b8375804ee8dce75b10576",
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"input": SCRIPT_INPUT,
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"output": ["ok"],
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"policies": {},
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}
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metadata = {"result": {"output": ["ok"]}}
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token_creation_tx = {
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"operation": "CREATE",
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"assets": [{"data": multihash(marshal({"test": "my asset"}))}],
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"metadata": multihash(marshal(metadata)),
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"script": script_,
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"outputs": [
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output,
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],
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"inputs": [
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input_,
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],
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"version": version,
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"id": None,
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}
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# JSON: serialize the transaction-without-id to a json formatted string
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tx = json.dumps(
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token_creation_tx,
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sort_keys=True,
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separators=(",", ":"),
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ensure_ascii=False,
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)
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script_ = json.dumps(script_)
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# major workflow:
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# we store the fulfill script in the transaction/message (zenroom-sha)
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# the condition script is used to fulfill the transaction and create the signature
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#
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# the server should ick the fulfill script and recreate the zenroom-sha and verify the signature
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signed_input = zenroomscpt.sign(script_, CONDITION_SCRIPT, alice)
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input_signed = json.loads(signed_input)
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input_signed["input"]["signature"] = input_signed["output"]["signature"]
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del input_signed["output"]["signature"]
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del input_signed["output"]["logs"]
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input_signed["output"] = ["ok"] # define expected output that is to be compared
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input_msg = json.dumps(input_signed)
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assert zenroomscpt.validate(message=input_msg)
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tx = json.loads(tx)
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fulfillment_uri_zen = zenroomscpt.serialize_uri()
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tx["script"] = input_signed
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tx["inputs"][0]["fulfillment"] = fulfillment_uri_zen
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tx["id"] = None
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json_str_tx = json.dumps(tx, sort_keys=True, skipkeys=False, separators=(",", ":"))
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# SHA3: hash the serialized id-less transaction to generate the id
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shared_creation_txid = sha3_256(json_str_tx.encode()).hexdigest()
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tx["id"] = shared_creation_txid
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from transactions.common.transaction import Transaction
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from planetmint.lib import Planetmint
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from transactions.common.exceptions import (
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SchemaValidationError,
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ValidationError,
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)
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try:
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print(f"TX\n{tx}")
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tx_obj = Transaction.from_dict(tx, False)
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except SchemaValidationError as e:
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print(e)
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assert ()
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except ValidationError as e:
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print(e)
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assert ()
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planet = Planetmint()
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try:
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planet.validate_transaction(tx_obj)
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except ValidationError as e:
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print("Invalid transaction ({}): {}".format(type(e).__name__, e))
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assert ()
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print(f"VALIDATED : {tx_obj}")
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assert (tx_obj == False) is False
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