def issuance_test(self, sighash_ty):
tx, prev_vout, spk, sec, pub, tweak = self.create_taproot_utxo()
blind_addr = self.nodes[0].getnewaddress()
nonblind_addr = self.nodes[0].validateaddress(
blind_addr)['unconfidential']
raw_tx = self.nodes[0].createrawtransaction([], [{nonblind_addr: 1}])
raw_tx = FromHex(CTransaction(), raw_tx)
# Need to taproot outputs later because fundrawtransaction cannot estimate fees
# prev out has value 1.2 btc
in_total = tx.vout[prev_vout].nValue.getAmount()
fees = 100
raw_tx.vin.append(CTxIn(COutPoint(tx.sha256, prev_vout)))
raw_tx.vout.append(
CTxOut(nValue=CTxOutValue(in_total - fees - 10**8),
scriptPubKey=spk)) # send back to self
raw_tx.vout.append(CTxOut(nValue=CTxOutValue(fees)))
# issued_tx = raw_tx.serialize().hex()
blind_addr = self.nodes[0].getnewaddress()
issue_addr = self.nodes[0].validateaddress(
blind_addr)['unconfidential']
issued_tx = self.nodes[0].rawissueasset(
raw_tx.serialize().hex(), [{
"asset_amount": 2,
"asset_address": issue_addr,
"blind": False
}])[0]["hex"]
# blind_tx = self.nodes[0].blindrawtransaction(issued_tx) # This is a no-op
genesis_hash = uint256_from_str(
bytes.fromhex(self.nodes[0].getblockhash(0))[::-1])
issued_tx = FromHex(CTransaction(), issued_tx)
issued_tx.wit.vtxoutwit = [CTxOutWitness()] * len(issued_tx.vout)
issued_tx.wit.vtxinwit = [CTxInWitness()] * len(issued_tx.vin)
msg = TaprootSignatureHash(issued_tx, [tx.vout[prev_vout]], sighash_ty,
genesis_hash, 0)
# compute the tweak
tweak_sk = tweak_add_privkey(sec, tweak)
sig = sign_schnorr(tweak_sk, msg)
issued_tx.wit.vtxinwit[0].scriptWitness.stack = [
taproot_pad_sighash_ty(sig, sighash_ty)
]
pub_tweak = tweak_add_pubkey(pub, tweak)[0]
assert (verify_schnorr(pub_tweak, sig, msg))
# Since we add in/outputs the min feerate is no longer maintained.
self.nodes[0].sendrawtransaction(hexstring=issued_tx.serialize().hex())
self.nodes[0].generate(1)
last_blk = self.nodes[0].getblock(self.nodes[0].getbestblockhash())
issued_tx.rehash()
assert (issued_tx.hash in last_blk['tx'])
def run_test(self):
print("Testing wallet secret recovery")
self.test_wallet_recovery()
print("General Confidential tests")
# Running balances
node0 = self.nodes[0].getbalance()["bitcoin"]
assert_equal(node0,
21000000) # just making sure initialfreecoins is working
node1 = 0
node2 = 0
self.nodes[0].generate(101)
txid = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(),
node0, "", "", True)
self.nodes[0].generate(101)
self.sync_all()
assert_equal(self.nodes[0].getbalance()["bitcoin"], node0)
assert_equal(self.nodes[1].getbalance("*", 1, False, "bitcoin"), node1)
assert_equal(self.nodes[2].getbalance("*", 1, False, "bitcoin"), node2)
# Send 3 BTC from 0 to a new unconfidential address of 2 with
# the sendtoaddress call
address = self.nodes[2].getnewaddress()
unconfidential_address = self.nodes[2].validateaddress(
address)["unconfidential"]
value0 = 3
self.nodes[0].sendtoaddress(unconfidential_address, value0)
self.nodes[0].generate(101)
self.sync_all()
node0 = node0 - value0
node2 = node2 + value0
assert_equal(self.nodes[0].getbalance()["bitcoin"], node0)
assert_equal(self.nodes[1].getbalance("*", 1, False, "bitcoin"), node1)
assert_equal(self.nodes[2].getbalance()["bitcoin"], node2)
# Send 5 BTC from 0 to a new address of 2 with the sendtoaddress call
address2 = self.nodes[2].getnewaddress()
unconfidential_address2 = self.nodes[2].validateaddress(
address2)["unconfidential"]
value1 = 5
confidential_tx_id = self.nodes[0].sendtoaddress(address2, value1)
self.nodes[0].generate(101)
self.sync_all()
node0 = node0 - value1
node2 = node2 + value1
assert_equal(self.nodes[0].getbalance()["bitcoin"], node0)
assert_equal(self.nodes[1].getbalance("*", 1, False, "bitcoin"), node1)
assert_equal(self.nodes[2].getbalance()["bitcoin"], node2)
# Send 7 BTC from 0 to the unconfidential address of 2 and 11 BTC to the
# confidential address using the raw transaction interface
change_address = self.nodes[0].getnewaddress()
value2 = 7
value3 = 11
value23 = value2 + value3
unspent = self.nodes[0].listunspent(1, 9999999, [], True,
{"asset": "bitcoin"})
unspent = [i for i in unspent if i['amount'] > value23]
assert_equal(len(unspent), 1)
fee = Decimal('0.0001')
tx = self.nodes[0].createrawtransaction(
[{
"txid": unspent[0]["txid"],
"vout": unspent[0]["vout"],
"nValue": unspent[0]["amount"]
}], {
unconfidential_address: value2,
address2: value3,
change_address: unspent[0]["amount"] - value2 - value3 - fee,
"fee": fee
})
tx = self.nodes[0].blindrawtransaction(tx)
tx_signed = self.nodes[0].signrawtransactionwithwallet(tx)
raw_tx_id = self.nodes[0].sendrawtransaction(tx_signed['hex'])
self.nodes[0].generate(101)
self.sync_all()
node0 -= (value2 + value3)
node2 += value2 + value3
assert_equal(self.nodes[0].getbalance()["bitcoin"], node0)
assert_equal(self.nodes[1].getbalance("*", 1, False, "bitcoin"), node1)
assert_equal(self.nodes[2].getbalance()["bitcoin"], node2)
# Check 2's listreceivedbyaddress
received_by_address = self.nodes[2].listreceivedbyaddress(
0, False, False, "", "bitcoin")
validate_by_address = [(address2, {
"bitcoin": value1 + value3
}), (address, {
"bitcoin": value0 + value2
})]
assert_equal(
sorted([(ele['address'], ele['amount'])
for ele in received_by_address],
key=lambda t: t[0]),
sorted(validate_by_address, key=lambda t: t[0]))
# Give an auditor (node 1) a blinding key to allow her to look at
# transaction values
self.nodes[1].importaddress(address2)
received_by_address = self.nodes[1].listreceivedbyaddress(
1, False, True)
#Node sees nothing unless it understands the values
assert_equal(len(received_by_address), 0)
assert_equal(
len(self.nodes[1].listunspent(1, 9999999, [], True,
{"asset": "bitcoin"})), 0)
# Import the blinding key
blindingkey = self.nodes[2].dumpblindingkey(address2)
self.nodes[1].importblindingkey(address2, blindingkey)
# Check the auditor's gettransaction and listreceivedbyaddress
# Needs rescan to update wallet txns
conf_tx = self.nodes[1].gettransaction(confidential_tx_id, True)
assert_equal(conf_tx['amount']["bitcoin"], value1)
# Make sure wallet can now deblind part of transaction
deblinded_tx = self.nodes[1].unblindrawtransaction(
conf_tx['hex'])['hex']
for output in self.nodes[1].decoderawtransaction(deblinded_tx)["vout"]:
if "value" in output and output["scriptPubKey"]["type"] != "fee":
assert_equal(
output["scriptPubKey"]["addresses"][0],
self.nodes[1].validateaddress(address2)['unconfidential'])
found_unblinded = True
assert (found_unblinded)
assert_equal(
self.nodes[1].gettransaction(raw_tx_id, True)['amount']["bitcoin"],
value3)
list_unspent = self.nodes[1].listunspent(1, 9999999, [], True,
{"asset": "bitcoin"})
assert_equal(list_unspent[0]['amount'] + list_unspent[1]['amount'],
value1 + value3)
received_by_address = self.nodes[1].listreceivedbyaddress(
1, False, True)
assert_equal(len(received_by_address), 1)
assert_equal((received_by_address[0]['address'],
received_by_address[0]['amount']['bitcoin']),
(unconfidential_address2, value1 + value3))
# Spending a single confidential output and sending it to a
# unconfidential output is not possible with CT. Test the
# correct behavior of blindrawtransaction.
unspent = self.nodes[0].listunspent(1, 9999999, [], True,
{"asset": "bitcoin"})
unspent = [i for i in unspent if i['amount'] > value23]
assert_equal(len(unspent), 1)
tx = self.nodes[0].createrawtransaction(
[{
"txid": unspent[0]["txid"],
"vout": unspent[0]["vout"],
"nValue": unspent[0]["amount"]
}], {
unconfidential_address: unspent[0]["amount"] - fee,
"fee": fee
})
# Test that blindrawtransaction adds an OP_RETURN output to balance blinders
temptx = self.nodes[0].blindrawtransaction(tx)
decodedtx = self.nodes[0].decoderawtransaction(temptx)
assert_equal(decodedtx["vout"][-1]["scriptPubKey"]["asm"], "OP_RETURN")
assert_equal(len(decodedtx["vout"]), 3)
# Create same transaction but with a change/dummy output.
# It should pass the blinding step.
value4 = 17
change_address = self.nodes[0].getrawchangeaddress()
tx = self.nodes[0].createrawtransaction(
[{
"txid": unspent[0]["txid"],
"vout": unspent[0]["vout"],
"nValue": unspent[0]["amount"]
}], {
unconfidential_address: value4,
change_address: unspent[0]["amount"] - value4 - fee,
"fee": fee
})
tx = self.nodes[0].blindrawtransaction(tx)
tx_signed = self.nodes[0].signrawtransactionwithwallet(tx)
txid = self.nodes[0].sendrawtransaction(tx_signed['hex'])
decodedtx = self.nodes[0].decoderawtransaction(tx_signed["hex"])
self.nodes[0].generate(101)
self.sync_all()
unblindfound = False
for i in range(len(decodedtx["vout"])):
txout = self.nodes[0].gettxout(txid, i)
if txout is not None and "asset" in txout:
unblindfound = True
if unblindfound == False:
raise Exception(
"No unconfidential output detected when one should exist")
node0 -= value4
node2 += value4
assert_equal(self.nodes[0].getbalance()["bitcoin"], node0)
assert_equal(self.nodes[1].getbalance("*", 1, False, "bitcoin"), node1)
assert_equal(self.nodes[2].getbalance()["bitcoin"], node2)
# Testing wallet's ability to deblind its own outputs
addr = self.nodes[0].getnewaddress()
addr2 = self.nodes[0].getnewaddress()
# We add two to-blind outputs, fundraw adds an already-blinded change output
# If we only add one, the newly blinded will be 0-blinded because input = -output
raw = self.nodes[0].createrawtransaction([], {
addr: Decimal('1.1'),
addr2: 1
})
funded = self.nodes[0].fundrawtransaction(raw)
# fund again to make sure no blinded outputs were created (would fail)
funded = self.nodes[0].fundrawtransaction(funded["hex"])
blinded = self.nodes[0].blindrawtransaction(funded["hex"])
# blind again to make sure we know output blinders
blinded2 = self.nodes[0].blindrawtransaction(blinded)
# then sign and send
signed = self.nodes[0].signrawtransactionwithwallet(blinded2)
self.nodes[0].sendrawtransaction(signed["hex"])
# Aside: Check all outputs after fundraw are properly marked for blinding
fund_decode = self.nodes[0].decoderawtransaction(funded["hex"])
for output in fund_decode["vout"][:-1]:
assert "asset" in output
assert "value" in output
assert output["scriptPubKey"]["type"] != "fee"
assert output["commitmentnonce_fully_valid"]
assert fund_decode["vout"][-1]["scriptPubKey"]["type"] == "fee"
assert not fund_decode["vout"][-1]["commitmentnonce_fully_valid"]
# Also check that all fundraw outputs marked for blinding are blinded later
for blind_tx in [blinded, blinded2]:
blind_decode = self.nodes[0].decoderawtransaction(blind_tx)
for output in blind_decode["vout"][:-1]:
assert "asset" not in output
assert "value" not in output
assert output["scriptPubKey"]["type"] != "fee"
assert output["commitmentnonce_fully_valid"]
assert blind_decode["vout"][-1]["scriptPubKey"]["type"] == "fee"
assert "asset" in blind_decode["vout"][-1]
assert "value" in blind_decode["vout"][-1]
assert not blind_decode["vout"][-1]["commitmentnonce_fully_valid"]
# Check createblindedaddress functionality
blinded_addr = self.nodes[0].getnewaddress()
validated_addr = self.nodes[0].validateaddress(blinded_addr)
blinding_pubkey = self.nodes[0].validateaddress(
blinded_addr)["confidential_key"]
blinding_key = self.nodes[0].dumpblindingkey(blinded_addr)
assert_equal(
blinded_addr, self.nodes[1].createblindedaddress(
validated_addr["unconfidential"], blinding_pubkey))
# If a blinding key is over-ridden by a newly imported one, funds may be unaccounted for
new_addr = self.nodes[0].getnewaddress()
new_validated = self.nodes[0].validateaddress(new_addr)
self.nodes[2].sendtoaddress(new_addr, 1)
self.sync_all()
diff_blind = self.nodes[1].createblindedaddress(
new_validated["unconfidential"], blinding_pubkey)
assert_equal(
len(self.nodes[0].listunspent(0, 0,
[new_validated["unconfidential"]])),
1)
self.nodes[0].importblindingkey(diff_blind, blinding_key)
# CT values for this wallet transaction have been cached via importblindingkey
# therefore result will be same even though we change blinding keys
assert_equal(
len(self.nodes[0].listunspent(0, 0,
[new_validated["unconfidential"]])),
1)
# Confidential Assets Tests
print("Assets tests...")
# Bitcoin is the first issuance
assert_equal(self.nodes[0].listissuances()[0]["assetlabel"], "bitcoin")
assert_equal(len(self.nodes[0].listissuances()), 1)
# Unblinded issuance of asset
issued = self.nodes[0].issueasset(1, 1, False)
self.nodes[0].reissueasset(issued["asset"], 1)
# Compare resulting fields with getrawtransaction
raw_details = self.nodes[0].getrawtransaction(issued["txid"], 1)
assert_equal(
issued["entropy"],
raw_details["vin"][issued["vin"]]["issuance"]["assetEntropy"])
assert_equal(issued["asset"],
raw_details["vin"][issued["vin"]]["issuance"]["asset"])
assert_equal(issued["token"],
raw_details["vin"][issued["vin"]]["issuance"]["token"])
self.nodes[0].generate(1)
self.sync_all()
issued2 = self.nodes[0].issueasset(2, 1)
test_asset = issued2["asset"]
assert_equal(self.nodes[0].getwalletinfo()['balance'][test_asset],
Decimal(2))
assert (test_asset not in self.nodes[1].getwalletinfo()['balance'])
# Assets balance checking, note that accounts are completely ignored because
# balance queries with accounts are horrifically broken upstream
assert_equal(self.nodes[0].getbalance("*", 0, False, "bitcoin"),
self.nodes[0].getbalance("*", 0, False, "bitcoin"))
assert_equal(self.nodes[0].getwalletinfo()['balance']['bitcoin'],
self.nodes[0].getbalance("*", 0, False, "bitcoin"))
# Send some bitcoin and other assets over as well to fund wallet
addr = self.nodes[2].getnewaddress()
self.nodes[0].sendtoaddress(addr, 5)
self.nodes[0].sendmany("", {
addr: 1,
self.nodes[2].getnewaddress(): 13
}, 0, "", [], False, 1, "UNSET", {addr: test_asset})
self.sync_all()
# Should have exactly 1 in change(trusted, though not confirmed) after sending one off
assert_equal(self.nodes[0].getbalance("*", 0, False, test_asset), 1)
assert_equal(self.nodes[2].getunconfirmedbalance()[test_asset],
Decimal(1))
b_utxos = self.nodes[2].listunspent(0, 0, [], True,
{"asset": "bitcoin"})
t_utxos = self.nodes[2].listunspent(0, 0, [], True,
{"asset": test_asset})
assert_equal(len(self.nodes[2].listunspent(0, 0, [])),
len(b_utxos) + len(t_utxos))
# Now craft a blinded transaction via raw api
rawaddrs = []
for i in range(2):
rawaddrs.append(self.nodes[1].getnewaddress())
raw_assets = self.nodes[2].createrawtransaction(
[{
"txid": b_utxos[0]['txid'],
"vout": b_utxos[0]['vout'],
"nValue": b_utxos[0]['amount']
}, {
"txid": b_utxos[1]['txid'],
"vout": b_utxos[1]['vout'],
"nValue": b_utxos[1]['amount'],
"asset": b_utxos[1]['asset']
}, {
"txid": t_utxos[0]['txid'],
"vout": t_utxos[0]['vout'],
"nValue": t_utxos[0]['amount'],
"asset": t_utxos[0]['asset']
}], {
rawaddrs[1]:
Decimal(t_utxos[0]['amount']),
rawaddrs[0]:
Decimal(b_utxos[0]['amount'] + b_utxos[1]['amount'] -
Decimal("0.01")),
"fee":
Decimal("0.01")
}, 0, False, {
rawaddrs[0]: b_utxos[0]['asset'],
rawaddrs[1]: t_utxos[0]['asset'],
"fee": b_utxos[0]['asset']
})
# Sign unblinded, then blinded
signed_assets = self.nodes[2].signrawtransactionwithwallet(raw_assets)
blind_assets = self.nodes[2].blindrawtransaction(raw_assets)
signed_assets = self.nodes[2].signrawtransactionwithwallet(
blind_assets)
# And finally send
self.nodes[2].sendrawtransaction(signed_assets['hex'])
self.nodes[2].generate(101)
self.sync_all()
issuancedata = self.nodes[2].issueasset(
0, Decimal('0.00000006')) #0 of asset, 6 reissuance token
# Node 2 will send node 1 a reissuance token, both will generate assets
self.nodes[2].sendtoaddress(self.nodes[1].getnewaddress(),
Decimal('0.00000001'), "", "", False,
False, 1, "UNSET", issuancedata["token"])
# node 1 needs to know about a (re)issuance to reissue itself
self.nodes[1].importaddress(self.nodes[2].gettransaction(
issuancedata["txid"])["details"][0]["address"])
# also send some bitcoin
self.nodes[2].generate(1)
self.sync_all()
self.nodes[1].reissueasset(issuancedata["asset"], Decimal('0.05'))
self.nodes[2].reissueasset(issuancedata["asset"], Decimal('0.025'))
self.nodes[1].generate(1)
self.sync_all()
# Check for value accounting when asset issuance is null but token not, ie unblinded
# HACK: Self-send to sweep up bitcoin inputs into blinded output.
# We were hitting https://github.com/ElementsProject/elements/issues/473 for the following issuance
self.nodes[0].sendtoaddress(
self.nodes[0].getnewaddress(),
self.nodes[0].getwalletinfo()["balance"]["bitcoin"], "", "", True)
issued = self.nodes[0].issueasset(0, 1, False)
walletinfo = self.nodes[0].getwalletinfo()
assert (issued["asset"] not in walletinfo["balance"])
assert_equal(walletinfo["balance"][issued["token"]], Decimal(1))
assert (issued["asset"] not in walletinfo["unconfirmed_balance"])
assert (issued["token"] not in walletinfo["unconfirmed_balance"])
# Check for value when receiving different assets by same address.
self.nodes[0].sendtoaddress(unconfidential_address2,
Decimal('0.00000001'), "", "", False,
False, 1, "UNSET", test_asset)
self.nodes[0].sendtoaddress(unconfidential_address2,
Decimal('0.00000002'), "", "", False,
False, 1, "UNSET", test_asset)
self.nodes[0].generate(1)
self.sync_all()
received_by_address = self.nodes[1].listreceivedbyaddress(
0, False, True)
multi_asset_amount = [
x for x in received_by_address
if x['address'] == unconfidential_address2
][0]['amount']
assert_equal(multi_asset_amount['bitcoin'], value1 + value3)
assert_equal(multi_asset_amount[test_asset], Decimal('0.00000003'))
# Check blinded multisig functionality and partial blinding functionality
# Get two pubkeys
blinded_addr = self.nodes[0].getnewaddress()
pubkey = self.nodes[0].getaddressinfo(blinded_addr)["pubkey"]
blinded_addr2 = self.nodes[1].getnewaddress()
pubkey2 = self.nodes[1].getaddressinfo(blinded_addr2)["pubkey"]
pubkeys = [pubkey, pubkey2]
# Add multisig address
unconfidential_addr = self.nodes[0].addmultisigaddress(
2, pubkeys)["address"]
self.nodes[1].addmultisigaddress(2, pubkeys)
self.nodes[0].importaddress(unconfidential_addr)
self.nodes[1].importaddress(unconfidential_addr)
# Use blinding key from node 0's original getnewaddress call
blinding_pubkey = self.nodes[0].getaddressinfo(
blinded_addr)["confidential_key"]
blinding_key = self.nodes[0].dumpblindingkey(blinded_addr)
# Create blinded address from p2sh address and import corresponding privkey
blinded_multisig_addr = self.nodes[0].createblindedaddress(
unconfidential_addr, blinding_pubkey)
self.nodes[0].importblindingkey(blinded_multisig_addr, blinding_key)
# Issue new asset, to use different assets in one transaction when doing
# partial blinding. Just to make these tests a bit more elaborate :-)
issued3 = self.nodes[2].issueasset(1, 0)
self.nodes[2].generate(1)
self.sync_all()
node2_balance = self.nodes[2].getbalance()
assert (issued3['asset'] in node2_balance)
assert_equal(node2_balance[issued3['asset']], Decimal(1))
# Send asset to blinded multisig address and check that it was received
self.nodes[2].sendtoaddress(address=blinded_multisig_addr,
amount=1,
assetlabel=issued3['asset'])
self.sync_all()
# We will use this multisig UTXO in our partially-blinded transaction,
# and will also check that multisig UTXO can be successfully spent
# after the transaction is signed by node1 and node0 in succession.
unspent_asset = self.nodes[0].listunspent(0, 0, [unconfidential_addr],
True,
{"asset": issued3['asset']})
assert_equal(len(unspent_asset), 1)
assert (issued3['asset'] not in self.nodes[2].getbalance())
# Create new UTXO on node0 to be used in our partially-blinded transaction
blinded_addr = self.nodes[0].getnewaddress()
addr = self.nodes[0].validateaddress(blinded_addr)["unconfidential"]
self.nodes[0].sendtoaddress(blinded_addr, 0.1)
unspent = self.nodes[0].listunspent(0, 0, [addr])
assert_equal(len(unspent), 1)
# Create new UTXO on node1 to be used in our partially-blinded transaction
blinded_addr2 = self.nodes[1].getnewaddress()
addr2 = self.nodes[1].validateaddress(blinded_addr2)["unconfidential"]
self.nodes[1].sendtoaddress(blinded_addr2, 0.11)
unspent2 = self.nodes[1].listunspent(0, 0, [addr2])
assert_equal(len(unspent2), 1)
# The transaction will have three non-fee outputs
dst_addr = self.nodes[0].getnewaddress()
dst_addr2 = self.nodes[1].getnewaddress()
dst_addr3 = self.nodes[2].getnewaddress()
# Inputs are selected up front
inputs = [{
"txid": unspent2[0]["txid"],
"vout": unspent2[0]["vout"]
}, {
"txid": unspent[0]["txid"],
"vout": unspent[0]["vout"]
}, {
"txid": unspent_asset[0]["txid"],
"vout": unspent_asset[0]["vout"]
}]
# Create one part of the transaction to partially blind
rawtx = self.nodes[0].createrawtransaction(
inputs, {dst_addr2: Decimal("0.01")})
# Create another part of the transaction to partially blind
rawtx2 = self.nodes[0].createrawtransaction(
inputs, {
dst_addr: Decimal("0.1"),
dst_addr3: Decimal("1.0")
}, 0, False, {
dst_addr: unspent[0]['asset'],
dst_addr3: unspent_asset[0]['asset']
})
sum_i = unspent2[0]["amount"] + unspent[0]["amount"]
sum_o = 0.01 + 0.10 + 0.1
assert_equal(int(round(sum_i * COIN)), int(round(sum_o * COIN)))
# Blind the first part of the transaction - we need to supply the
# assetcommmitments for all of the inputs, for the surjectionproof
# to be valid after we combine the transactions
blindtx = self.nodes[1].blindrawtransaction(rawtx, True, [
unspent2[0]['assetcommitment'], unspent[0]['assetcommitment'],
unspent_asset[0]['assetcommitment']
])
# Combine the transactions
# Blinded, but incomplete transaction.
# 3 inputs and 1 output, but no fee output, and
# it was blinded with 3 asset commitments, that means
# the final transaction should have 3 inputs.
btx = CTransaction()
btx.deserialize(io.BytesIO(hex_str_to_bytes(blindtx)))
# Unblinded transaction, with 3 inputs and 2 outputs.
# We will add them to the other transaction to make it complete.
ubtx = CTransaction()
ubtx.deserialize(io.BytesIO(hex_str_to_bytes(rawtx2)))
# We will add outputs of unblinded transaction
# on top of inputs and outputs of the blinded, but incomplete transaction.
# We also append empty witness instances to make witness arrays match
# vin/vout arrays
btx.wit.vtxinwit.append(CTxInWitness())
btx.vout.append(ubtx.vout[0])
btx.wit.vtxoutwit.append(CTxOutWitness())
btx.wit.vtxinwit.append(CTxInWitness())
btx.vout.append(ubtx.vout[1])
btx.wit.vtxoutwit.append(CTxOutWitness())
# Add explicit fee output
btx.vout.append(
CTxOut(nValue=CTxOutValue(10000000),
nAsset=CTxOutAsset(BITCOIN_ASSET_OUT)))
btx.wit.vtxoutwit.append(CTxOutWitness())
# Input 0 is bitcoin asset (already blinded)
# Input 1 is also bitcoin asset
# Input 2 is our new asset
# Blind with wrong order of assetcommitments - such transaction should be rejected
blindtx = self.nodes[0].blindrawtransaction(
bytes_to_hex_str(btx.serialize()), True, [
unspent_asset[0]['assetcommitment'],
unspent[0]['assetcommitment'], unspent2[0]['assetcommitment']
])
stx2 = self.nodes[1].signrawtransactionwithwallet(blindtx)
stx = self.nodes[0].signrawtransactionwithwallet(stx2['hex'])
self.sync_all()
assert_raises_rpc_error(-26, "bad-txns-in-ne-out",
self.nodes[2].sendrawtransaction, stx['hex'])
# Blind with correct order of assetcommitments
blindtx = self.nodes[0].blindrawtransaction(
bytes_to_hex_str(btx.serialize()), True, [
unspent2[0]['assetcommitment'], unspent[0]['assetcommitment'],
unspent_asset[0]['assetcommitment']
])
stx2 = self.nodes[1].signrawtransactionwithwallet(blindtx)
stx = self.nodes[0].signrawtransactionwithwallet(stx2['hex'])
txid = self.nodes[2].sendrawtransaction(stx['hex'])
self.nodes[2].generate(1)
assert self.nodes[2].getrawtransaction(txid, 1)['confirmations'] == 1
self.sync_all()
# Check that the sent asset has reached its destination
unconfidential_dst_addr3 = self.nodes[2].validateaddress(
dst_addr3)["unconfidential"]
unspent_asset2 = self.nodes[2].listunspent(1, 1,
[unconfidential_dst_addr3],
True,
{"asset": issued3['asset']})
assert_equal(len(unspent_asset2), 1)
assert_equal(unspent_asset2[0]['amount'], Decimal(1))
# And that the balance was correctly updated
assert_equal(self.nodes[2].getbalance()[issued3['asset']], Decimal(1))
# Basic checks of rawblindrawtransaction functionality
blinded_addr = self.nodes[0].getnewaddress()
addr = self.nodes[0].validateaddress(blinded_addr)["unconfidential"]
self.nodes[0].sendtoaddress(blinded_addr, 1)
self.nodes[0].sendtoaddress(blinded_addr, 3)
unspent = self.nodes[0].listunspent(0, 0)
rawtx = self.nodes[0].createrawtransaction(
[{
"txid": unspent[0]["txid"],
"vout": unspent[0]["vout"]
}, {
"txid": unspent[1]["txid"],
"vout": unspent[1]["vout"]
}], {
addr:
unspent[0]["amount"] + unspent[1]["amount"] - Decimal("0.2"),
"fee": Decimal("0.2")
})
# Blinding will fail with 2 blinded inputs and 0 blinded outputs
# since it has no notion of a wallet to fill in a 0-value OP_RETURN output
try:
self.nodes[0].rawblindrawtransaction(
rawtx,
[unspent[0]["amountblinder"], unspent[1]["amountblinder"]],
[unspent[0]["amount"], unspent[1]["amount"]],
[unspent[0]["asset"], unspent[1]["asset"]],
[unspent[0]["assetblinder"], unspent[1]["assetblinder"]])
raise AssertionError(
"Shouldn't be able to blind 2 input 0 output transaction via rawblindraw"
)
except JSONRPCException:
pass
# Blinded destination added, can blind, sign and send
rawtx = self.nodes[0].createrawtransaction(
[{
"txid": unspent[0]["txid"],
"vout": unspent[0]["vout"]
}, {
"txid": unspent[1]["txid"],
"vout": unspent[1]["vout"]
}], {
blinded_addr:
unspent[0]["amount"] + unspent[1]["amount"] - Decimal("0.002"),
"fee":
Decimal("0.002")
})
signtx = self.nodes[0].signrawtransactionwithwallet(rawtx)
try:
self.nodes[0].sendrawtransaction(signtx["hex"])
raise AssertionError(
"Shouldn't be able to send unblinded tx with emplaced pubkey in output without additional argument"
)
except JSONRPCException:
pass
blindtx = self.nodes[0].rawblindrawtransaction(
rawtx, [unspent[0]["amountblinder"], unspent[1]["amountblinder"]],
[unspent[0]["amount"], unspent[1]["amount"]],
[unspent[0]["asset"], unspent[1]["asset"]],
[unspent[0]["assetblinder"], unspent[1]["assetblinder"]])
signtx = self.nodes[0].signrawtransactionwithwallet(blindtx)
txid = self.nodes[0].sendrawtransaction(signtx["hex"])
for output in self.nodes[0].decoderawtransaction(blindtx)["vout"]:
if "asset" in output and output["scriptPubKey"]["type"] != "fee":
raise AssertionError("An unblinded output exists")
# Test fundrawtransaction with multiple assets
issue = self.nodes[0].issueasset(1, 0)
assetaddr = self.nodes[0].getnewaddress()
rawtx = self.nodes[0].createrawtransaction(
[], {
assetaddr: 1,
self.nodes[0].getnewaddress(): 2
}, 0, False, {assetaddr: issue["asset"]})
funded = self.nodes[0].fundrawtransaction(rawtx)
blinded = self.nodes[0].blindrawtransaction(funded["hex"])
signed = self.nodes[0].signrawtransactionwithwallet(blinded)
txid = self.nodes[0].sendrawtransaction(signed["hex"])
# Test fundrawtransaction with multiple inputs, creating > vout.size change
rawtx = self.nodes[0].createrawtransaction(
[{
"txid": txid,
"vout": 0
}, {
"txid": txid,
"vout": 1
}], {self.nodes[0].getnewaddress(): 5})
funded = self.nodes[0].fundrawtransaction(rawtx)
blinded = self.nodes[0].blindrawtransaction(funded["hex"])
signed = self.nodes[0].signrawtransactionwithwallet(blinded)
txid = self.nodes[0].sendrawtransaction(signed["hex"])
# Test corner case where wallet appends a OP_RETURN output, yet doesn't blind it
# due to the fact that the output value is 0-value and input pedersen commitments
# self-balance. This is rare corner case, but ok.
unblinded = self.nodes[0].validateaddress(
self.nodes[0].getnewaddress())["unconfidential"]
self.nodes[0].sendtoaddress(unblinded,
self.nodes[0].getbalance()["bitcoin"], "",
"", True)
# Make tx with blinded destination and change outputs only
self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(),
self.nodes[0].getbalance()["bitcoin"] / 2)
# Send back again, this transaction should have 3 outputs, all unblinded
txid = self.nodes[0].sendtoaddress(
unblinded, self.nodes[0].getbalance()["bitcoin"], "", "", True)
outputs = self.nodes[0].getrawtransaction(txid, 1)["vout"]
assert_equal(len(outputs), 3)
assert ("value" in outputs[0] and "value" in outputs[1]
and "value" in outputs[2])
assert_equal(outputs[2]["scriptPubKey"]["type"], 'nulldata')
# Test burn argument in createrawtransaction
raw_burn1 = self.nodes[0].createrawtransaction(
[], {
self.nodes[0].getnewaddress(): 1,
"burn": 2
})
decode_burn1 = self.nodes[0].decoderawtransaction(raw_burn1)
assert_equal(len(decode_burn1["vout"]), 2)
found_pay = False
found_burn = False
for output in decode_burn1["vout"]:
if output["scriptPubKey"]["asm"] == "OP_RETURN":
found_burn = True
if output["asset"] != self.nodes[0].dumpassetlabels(
)["bitcoin"]:
raise Exception(
"Burn should have been bitcoin(policyAsset)")
if output["scriptPubKey"]["type"] == "scripthash":
found_pay = True
assert (found_pay and found_burn)
raw_burn2 = self.nodes[0].createrawtransaction(
[], {
self.nodes[0].getnewaddress(): 1,
"burn": 2
}, 101, False, {"burn": "deadbeef" * 8})
decode_burn2 = self.nodes[0].decoderawtransaction(raw_burn2)
assert_equal(len(decode_burn2["vout"]), 2)
found_pay = False
found_burn = False
for output in decode_burn2["vout"]:
if output["scriptPubKey"]["asm"] == "OP_RETURN":
found_burn = True
if output["asset"] != "deadbeef" * 8:
raise Exception("Burn should have been deadbeef")
if output["scriptPubKey"]["type"] == "scripthash":
found_pay = True
assert (found_pay and found_burn)