def decodeGameKey(gk):
decoded = ByteArray(b58decode(gk))
addrID = decoded.pop(2)
if addrID not in AddrIDs.values():
exit("invalid address ID %s" + repr(addrID))
netByte = decoded.pop(1)[0]
if netByte not in NetBytes.values():
exit("invalid net byte" + repr(netByte))
net = nets.mainnet if netByte == 1 else nets.testnet if netByte == 2 else nets.simnet
doubleHash = decoded.pop(32)
signingKey = crypto.privKeyFromBytes(decoded) # The remaining 32 bytes
# Rebuilt the script. See fund.py
redeemScript = ByteArray(opcode.OP_SHA256)
redeemScript += txscript.addData(doubleHash)
redeemScript += opcode.OP_EQUALVERIFY
redeemScript += txscript.addData(signingKey.pub.serializeCompressed())
redeemScript += opcode.OP_CHECKSIG
challengeAddr = AddressScriptHash.fromScript(redeemScript, net)
return net, signingKey, doubleHash, redeemScript, challengeAddr
def btcDecode(b, pver):
"""
btcDecode decodes r using the Decred protocol encoding into the
receiver. This is part of the Message interface implementation.
See deserialize for decoding transactions stored to disk, such as in a
database, as opposed to decoding transactions from the wire.
"""
# The serialized encoding of the version includes the real transaction
# version in the lower 16 bits and the transaction serialization type
# in the upper 16 bits.
b = ByteArray(b)
ver = b.pop(4).unLittle().int()
tx = MsgTx.new()
tx.version = ver & 0xFFFF
tx.serType = ver >> 16
# Serialize the transactions depending on their serialization
# types.
if tx.serType == wire.TxSerializeNoWitness:
b, _ = tx.decodePrefix(b, pver)
elif tx.serType == wire.TxSerializeOnlyWitness:
b, _ = tx.decodeWitness(b, pver, False)
elif tx.serType == wire.TxSerializeFull:
b, _ = tx.decodePrefix(b, pver)
b, _ = tx.decodeWitness(b, pver, True)
else:
raise NotImplementedError(
"MsgTx.BtcDecode: unsupported transaction type")
return tx