def calculate(self, leftNode, rightNode):
self.leftNode = leftNode
self.rightNode = rightNode
if len(self.rightNode.hashValue) > 0:
self.hashValue = getHashValue(self.leftNode.hashValue,
self.rightNode.hashValue)
else:
self.hashValue = getHashValue(self.leftNode.hashValue, "")
def verifyScriptSig(scriptSig: str, msg: str) -> bool:
stack: deque = deque()
params: List[str] = scriptSig.split("\t")
stack.append(params[0])
popped: str = ""
for i in range(1, len(params)):
if params[i] not in opcodeList:
stack.append(params[i])
else:
if params[i] == "OP_DUP":
popped = stack.pop()
stack.append(popped)
stack.append(popped)
elif params[i] == "OP_HASH160":
popped = stack.pop()
reqHash: str = utils.getHashValue(popped, hashSize)
stack.append(reqHash)
elif params[i] == "OP_EQUALVERIFY":
first: str = stack.pop()
second: str = stack.pop()
if first != second:
return False
elif params[i] == "OP_CHECKSIG":
pubKey = RSA.importKey(stack.pop())
signature: str = stack.pop()
if not utils.verify(pubKey, msg, signature):
return False
return True
def __init__(self, txnList: List[Transaction], blockHeader: BlockHeader,
fullMerkleTree: List[MerkleTreeNode]):
self.txnList: List[Transaction] = txnList
self.blockHeader: BlockHeader = blockHeader
self.merkleTree: List[MerkleTreeNode] = fullMerkleTree
self.hash: str = utils.getHashValue(blockHeader.getRawDataToHash(),
hashSize)
def calculate(self, nodeList):
self.nodeList = nodeList
for i in nodeList:
self.hashValue += i.hashValue
self.hashValue = getHashValue(self.hashValue, hashSize)
def comparePubKeyAndScript(pubKey: str, pubKeyScript: str) -> bool:
return pubKeyScript == createPubKeyScript(
utils.getHashValue(pubKey, hashSize))
def reCalculateHash(self) -> None:
self.hash: str = utils.getHashValue(
self.blockHeader.getRawDataToHash(), hashSize)
def calculateHash(self) -> None:
rawData = self.getRawDataToHash()
self.hash = utils.getHashValue(rawData, hashSize)
def createScriptPubKey(self, publicKeyOfReceiver: str):
self.scriptPubKey = ScriptEngine.createPubKeyScript(
utils.getHashValue(publicKeyOfReceiver, hashSize))