def verifyAuction(self):
# Ask repository for blockchain
messageToRep = Get_Blockchain_CR_Request()
# Get Auction Type
print('Enter the auction ID: ')
auc_id = input()
try:
a = int(auc_id)
except:
print('Invalid auction id')
return
messageToRep.setAuctionId(auc_id)
# Send to repository
res = self.sendMessageRepository(messageToRep.strToByteArray())
messageFromRep = Get_Blockchain_CR_Response()
# Unpack Response
try:
messageFromRep.unpack(res)
except:
print('Malformed message from Repository')
return
# Verify message signature
if not messageFromRep.verify_signature(REPOSITORY_PUBLIC_KEY):
print(
'Oops, repository signature failed. Someone modified the packet'
)
return
# Check Status of Message
if 'error' in messageFromRep.getStatus():
print('Error listing auctions: ' +
messageFromRep.getStatus()['error'])
return
# Verify blockchain
print('Received blockchain of auction from repository')
blockchain = Blockchain.load_dict_blockchain(
messageFromRep.getBlockchain())
if not blockchain.verify_integrity():
print("Blockchain is not correct BIG OOPS")
print("Contact the police")
print('Blockchain is indeed correct')
# Ask Manager for keys
messageToManager = Get_Keys_Auction_CM_Request()
messageToManager.setAuctionId(messageToRep.getAuctionId())
slot = self.getCard()
if not slot:
return
messageToManager.sign_message_CC(int(slot))
# Send to manager
res = self.sendMessageManager(messageToManager.strToByteArray())
messageFromManager = Get_Keys_Auction_CM_Response()
# Unpack Response
try:
messageFromManager.unpack(res)
except:
print('Malformed message from Manager')
return
# Verify message signature
if not messageFromManager.verify_signature(MANAGER_PUBLIC_KEY):
print(
'Oops, manager signature failed. Someone modified the packet')
return
# Check Status of Message
if 'error' in messageFromManager.getStatus():
print('Error listing auctions: ' +
messageFromManager.getStatus()['error'])
return
# Decrypt all auction information
auction = Auction.unwrapAuction(blockchain)
auction.isClosed()
# Get Keys
if auction.getAuctionType() != auction_type['BLIND']:
identityKey = bytes.fromhex(messageFromManager.getIdentityKeys())
if auction.getAuctionType() != auction_type['ENGLISH']:
blindKeys = pickle.loads(
bytes.fromhex(messageFromManager.getBlindKeys()))
# Print it
print('Auction Info')
print(auction.getAuction())
print('Bids Decrypted')
for bid in auction.getBids():
# Get identity and decode
identity = bid.getIdentity()
if auction.getAuctionType() == auction_type['BLIND']:
identity = bytes.fromhex(identity)
else:
identity = decrypt_symmetric(identityKey,
bytes.fromhex(identity))
certInBid = certTools.load_certificate(identity)
# Search for entry saved in manager for the key to decrypt value by comparing cert
if auction.getAuctionType() != auction_type['ENGLISH']:
entryBlind = ''
for entry in blindKeys:
certTemp = certTools.load_certificate(entry['identity'])
if certTemp.fingerprint(
hashes.SHA256()) == certInBid.fingerprint(
hashes.SHA256()):
entryBlind = entry
valueData = decrypt_symmetric(
entryBlind['keyBlindBid'],
bytes.fromhex(bid.getValue())).decode('utf-8')
try:
value = int(valueData)
if value == entryBlind['value']:
print('BID made by ' +
certTools.getNameInCert(certInBid) +
' with value ' + str(value))
except:
pass
else:
print('BID made by ' + certTools.getNameInCert(certInBid) +
' with value ' + bid.getValue())
return
def checkBlindClaimed(self, data):
messageToSend = Check_Blind_Auction_Outcome_Claimed_CM_Response()
message = Check_Blind_Auction_Outcome_Claimed_CM_Request()
# Check message formatting
try:
message.unpack(data)
except:
messageToSend.setStatus({'error': 'Message badly formatted'})
return messageToSend
# Check Signature
try:
cert = certTools.load_certificate(
bytes.fromhex(message.getCertificate()))
except:
messageToSend.setStatus(
{'error': 'Not a certificate in certificate field'})
return messageToSend
if not message.verify_signature(cert.public_key()):
messageToSend.setStatus({'error': 'Invalid signature'})
return messageToSend
# Check Certificate (chain)
if not certTools.verifyCertificateChainServerSide(cert):
messageToSend.setStatus({'error': 'Invalid certificate'})
return messageToSend
# DO INTERNAL STUFF
if not self.blindKeys[message.getAuctionId()]:
messageToSend.setStatus(
{'error': 'No one claimed this auction :('})
return messageToSend
# GET BLOCKCHAIN
messageToRep = Get_Blockchain_MR_Request()
messageToRep.setAuctionId(message.getAuctionId())
messageToRep.sign_message(self.private_key)
res = self.sendMessageRepository(messageToRep.strToByteArray())
messageFromRep = Get_Blockchain_MR_Response()
# Check message formatting
try:
messageFromRep.unpack(res)
except:
messageToSend.setStatus(
{'error': 'Message from Repository badly formatted'})
return messageToSend
# Check Status of Message
if 'error' in messageFromRep.getStatus():
messageToSend.setStatus({'error': 'Auction non existent'})
return messageToSend
# Load Blockchain into auction
blockchain = Blockchain.load_dict_blockchain(
messageFromRep.getBlockchain())
if not blockchain.verify_integrity():
messageToSend.setStatus({'error': 'Blockchain is invalid'})
return messageToSend
auction = Auction.unwrapAuction(blockchain)
auction.isClosed()
if auction.getAuctionType() == auction_type['ENGLISH']:
messageToSend.setStatus({'error': 'Auction is english'})
return messageToSend
highest_value = 0
winner_id = ''
me = False
for bid in auction.getBids():
# Get identity and decode
identity = bid.getIdentity()
if auction.getAuctionType() == auction_type['BLIND']:
identity = bytes.fromhex(identity)
else:
identity = decrypt_symmetric(
self.getKeyOfAuction(auction.getAuctionId()),
bytes.fromhex(identity))
certInBid = certTools.load_certificate(identity)
# Search for entry saved in manager for the key to decrypt value by comparing cert
entryBlind = ''
for entry in self.blindKeys[message.getAuctionId()]:
certTemp = certTools.load_certificate(entry['identity'])
if certTemp.fingerprint(
hashes.SHA256()) == certInBid.fingerprint(
hashes.SHA256()):
entryBlind = entry
break
if entryBlind:
valueData = decrypt_symmetric(
entryBlind['keyBlindBid'],
bytes.fromhex(bid.getValue())).decode('utf-8')
try:
value = int(valueData)
if value > highest_value:
highest_value = value
winner_id = certInBid
except:
pass
if cert.fingerprint(hashes.SHA256()) == winner_id.fingerprint(
hashes.SHA256()):
me = True
# Encrypt winnerID and winnervalue
# Get key
key = bytes.fromhex(
decrypt_assymetric(self.private_key,
bytes.fromhex(message.getSymKey())))
winnerID = {'me': me, 'ID': certTools.getNameInCert(winner_id)}
winnerID_encrypted = encrypt_symmetric(
key,
json.dumps(winnerID).encode('utf-8'), message.getAlgorithm(),
message.getMode())
messageToSend.setWinnerID(winnerID_encrypted.hex())
winnerValue = {'value': highest_value}
winnerValue_encrypted = encrypt_symmetric(
key,
json.dumps(winnerValue).encode('utf-8'), message.getAlgorithm(),
message.getMode())
messageToSend.setWinnerValue(winnerValue_encrypted.hex())
messageToSend.setStatus({'success': 'OK'})
return messageToSend
def getKeys(self, data):
messageToSend = Get_Keys_Auction_CM_Response()
message = Get_Keys_Auction_CM_Request()
# Check message formatting
try:
message.unpack(data)
except:
messageToSend.setStatus({'error': 'Message badly formatted'})
return messageToSend
# Check Signature
try:
cert = certTools.load_certificate(
bytes.fromhex(message.getCertificate()))
except:
messageToSend.setStatus(
{'error': 'Not a certificate in certificate field'})
return messageToSend
if not message.verify_signature(cert.public_key()):
messageToSend.setStatus({'error': 'Invalid signature'})
return messageToSend
# Check Certificate (chain)
if not certTools.verifyCertificateChainServerSide(cert):
messageToSend.setStatus({'error': 'Invalid certificate'})
return messageToSend
# GET BLOCKCHAIN
messageToRep = Get_Blockchain_MR_Request()
messageToRep.setAuctionId(message.getAuctionId())
messageToRep.sign_message(self.private_key)
res = self.sendMessageRepository(messageToRep.strToByteArray())
messageFromRep = Get_Blockchain_MR_Response()
# Check message formatting
try:
messageFromRep.unpack(res)
except:
messageToSend.setStatus(
{'error': 'Message from Repository badly formatted'})
return messageToSend
# Check Status of Message
if 'error' in messageFromRep.getStatus():
messageToSend.setStatus({'error': 'Auction non existent'})
return messageToSend
# Load Blockchain into auction
blockchain = Blockchain.load_dict_blockchain(
messageFromRep.getBlockchain())
if not blockchain.verify_integrity():
messageToSend.setStatus({'error': 'Blockchain is invalid'})
return messageToSend
auction = Auction.unwrapAuction(blockchain)
if not auction.isClosed():
messageToSend.setStatus({'error': 'Auction is not closed'})
return messageToSend
if auction.getAuctionType() == auction_type['BLIND']:
messageToSend.setIdentityKeys("Is a blind auction")
else:
identityKey = self.getKeyOfAuction(auction.getAuctionId())
messageToSend.setIdentityKeys(identityKey.hex())
if auction.getAuctionType() != auction_type['ENGLISH']:
keyList = self.blindKeys[auction.getAuctionId()]
messageToSend.setBlindKeys(pickle.dumps(keyList).hex())
else:
messageToSend.setBlindKeys('Not a blind auction')
messageToSend.setStatus({'success': 'OK'})
return messageToSend
def checkBlind(self, data):
messageToSend = Check_Blind_Auction_Outcome_CM_Response()
message = Check_Blind_Auction_Outcome_CM_Request()
# Check message formatting
try:
message.unpack(data)
except:
messageToSend.setStatus({'error': 'Message badly formatted'})
return messageToSend
# Check Signature
try:
cert = certTools.load_certificate(
bytes.fromhex(message.getCertificate()))
except:
messageToSend.setStatus(
{'error': 'Not a certificate in certificate field'})
return messageToSend
if not message.verify_signature(cert.public_key()):
messageToSend.setStatus({'error': 'Invalid signature'})
return messageToSend
# Check Certificate (chain)
if not certTools.verifyCertificateChainServerSide(cert):
messageToSend.setStatus({'error': 'Invalid certificate'})
return messageToSend
# DO INTERNAL STUFF
# GET BLOCKCHAIN
messageToRep = Get_Blockchain_MR_Request()
messageToRep.setAuctionId(message.getAuctionId())
messageToRep.sign_message(self.private_key)
res = self.sendMessageRepository(messageToRep.strToByteArray())
messageFromRep = Get_Blockchain_MR_Response()
# Check message formatting
try:
messageFromRep.unpack(res)
except:
messageToSend.setStatus(
{'error': 'Message from Repository badly formatted'})
return messageToSend
# Check Status of Message
if 'error' in messageFromRep.getStatus():
messageToSend.setStatus({'error': 'Auction non existent'})
return messageToSend
# Load Blockchain into auction
blockchain = Blockchain.load_dict_blockchain(
messageFromRep.getBlockchain())
if not blockchain.verify_integrity():
messageToSend.setStatus({'error': 'Blockchain is invalid'})
return messageToSend
auction = Auction.unwrapAuction(blockchain)
auction.isClosed()
if auction.getState() == auction_state['OPEN']:
messageToSend.setStatus({'error': 'Auction is still open'})
return messageToSend
if auction.getAuctionType() == auction_type['ENGLISH']:
messageToSend.setStatus({'error': 'Auction is english'})
return messageToSend
closed = False
if auction.getState() == auction_state['CLOSED']:
closed = True
# Return
# Get key
key = bytes.fromhex(
decrypt_assymetric(self.private_key,
bytes.fromhex(message.getSymKey())))
if closed:
auctionState = {'closed': True}
else:
auctionState = {'closed': False}
auctionState_encrypted = encrypt_symmetric(
key,
json.dumps(auctionState).encode('utf-8'), message.getAlgorithm(),
message.getMode())
messageToSend.setStatusAuction(auctionState_encrypted.hex())
messageToSend.setStatus({'success': 'OK'})
return messageToSend
def checkBlindUnclaimed(self, data):
messageToSend = Check_Blind_Auction_Outcome_Unclaimed_CM_Response()
message = Check_Blind_Auction_Outcome_Unclaimed_CM_Request()
# Check message formatting
try:
message.unpack(data)
except:
messageToSend.setStatus({'error': 'Message badly formatted'})
return messageToSend
# Check Signature
try:
cert = certTools.load_certificate(
bytes.fromhex(message.getCertificate()))
except:
messageToSend.setStatus(
{'error': 'Not a certificate in certificate field'})
return messageToSend
if not message.verify_signature(cert.public_key()):
messageToSend.setStatus({'error': 'Invalid signature'})
return messageToSend
# Check Certificate (chain)
if not certTools.verifyCertificateChainServerSide(cert):
messageToSend.setStatus({'error': 'Invalid certificate'})
return messageToSend
# Get Key Blind Bid
keyBlindBid = bytes.fromhex(
decrypt_assymetric(self.private_key,
bytes.fromhex(message.getKeyBlindBid())))
info(keyBlindBid)
# GET BLOCKCHAIN
messageToRep = Get_Blockchain_MR_Request()
messageToRep.setAuctionId(message.getAuctionId())
messageToRep.sign_message(self.private_key)
res = self.sendMessageRepository(messageToRep.strToByteArray())
messageFromRep = Get_Blockchain_MR_Response()
# Check message formatting
try:
messageFromRep.unpack(res)
except:
messageToSend.setStatus(
{'error': 'Message from Repository badly formatted'})
return messageToSend
# Check Status of Message
if 'error' in messageFromRep.getStatus():
messageToSend.setStatus({'error': 'Auction non existent'})
return messageToSend
# Load Blockchain into auction
blockchain = Blockchain.load_dict_blockchain(
messageFromRep.getBlockchain())
if not blockchain.verify_integrity():
messageToSend.setStatus({'error': 'Blockchain is invalid'})
return messageToSend
auction = Auction.unwrapAuction(blockchain)
auction.isClosed()
if auction.getAuctionType() == auction_type['ENGLISH']:
messageToSend.setStatus({'error': 'Auction is english'})
return messageToSend
for bid in auction.getBids():
value = ''
identity = bid.getIdentity()
if auction.getAuctionType() == auction_type['BLIND']:
identity = bytes.fromhex(identity)
else:
identity = decrypt_symmetric(
self.getKeyOfAuction(auction.getAuctionId()),
bytes.fromhex(identity))
certToCompare = certTools.load_certificate(identity)
if certToCompare.fingerprint(hashes.SHA256()) == cert.fingerprint(
hashes.SHA256()):
valueData = decrypt_symmetric(
keyBlindBid, bytes.fromhex(bid.getValue())).decode('utf-8')
try:
value = int(valueData)
self.blindKeys[auction.getAuctionId()].append({
'identity':
identity,
'value':
value,
'keyBlindBid':
keyBlindBid
})
break
except:
pass
if not value:
messageToSend.setStatus({'error': 'Key is not valid'})
return messageToSend
info(self.blindKeys)
messageToSend.setStatus({'success': 'OK'})
return messageToSend
def checkEnglish(self, data):
messageToSend = Check_English_Auction_Outcome_CM_Response()
message = Check_English_Auction_Outcome_CM_Request()
# Check message formatting
try:
message.unpack(data)
except:
messageToSend.setStatus({'error': 'Message badly formatted'})
return messageToSend
# Check Signature
try:
cert = certTools.load_certificate(
bytes.fromhex(message.getCertificate()))
except:
messageToSend.setStatus(
{'error': 'Not a certificate in certificate field'})
return messageToSend
if not message.verify_signature(cert.public_key()):
messageToSend.setStatus({'error': 'Invalid signature'})
return messageToSend
# Check Certificate (chain)
if not certTools.verifyCertificateChainServerSide(cert):
messageToSend.setStatus({'error': 'Invalid certificate'})
return messageToSend
# DO INTERNAL STUFF
# GET BLOCKCHAIN
messageToRep = Get_Blockchain_MR_Request()
messageToRep.setAuctionId(message.getAuctionId())
messageToRep.sign_message(self.private_key)
res = self.sendMessageRepository(messageToRep.strToByteArray())
messageFromRep = Get_Blockchain_MR_Response()
# Check message formatting
try:
messageFromRep.unpack(res)
except:
messageToSend.setStatus(
{'error': 'Message from Repository badly formatted'})
return messageToSend
# Check Status of Message
if 'error' in messageFromRep.getStatus():
messageToSend.setStatus({'error': 'Auction non existent'})
return messageToSend
# Load Blockchain into auction
blockchain = Blockchain.load_dict_blockchain(
messageFromRep.getBlockchain())
if not blockchain.verify_integrity():
messageToSend.setStatus({'error': 'Blockchain is invalid'})
return messageToSend
auction = Auction.unwrapAuction(blockchain)
if not auction.isClosed():
messageToSend.setStatus({'error': 'Auction is not closed'})
return messageToSend
if auction.getAuctionType() != auction_type['ENGLISH']:
messageToSend.setStatus({'error': 'Auction is not english'})
return messageToSend
identity = ''
value = 0
me = False
for bid in auction.getBids():
if int(bid.getValue()) > value:
value = int(bid.getValue())
identity = bid.getIdentity()
if identity:
identity = decrypt_symmetric(
self.getKeyOfAuction(auction.getAuctionId()),
bytes.fromhex(identity))
certToCompare = certTools.load_certificate(identity)
if certToCompare.fingerprint(hashes.SHA256()) == cert.fingerprint(
hashes.SHA256()):
me = True
identity = certTools.getNameInCert(cert)
# Return
# Get key
key = bytes.fromhex(
decrypt_assymetric(self.private_key,
bytes.fromhex(message.getSymKey())))
# Encrypt winnerID and winnervalue
winnerID = {'me': me, 'ID': identity}
winnerID_encrypted = encrypt_symmetric(
key,
json.dumps(winnerID).encode('utf-8'), message.getAlgorithm(),
message.getMode())
messageToSend.setWinnerID(winnerID_encrypted.hex())
winnerValue = {'value': value}
winnerValue_encrypted = encrypt_symmetric(
key,
json.dumps(winnerValue).encode('utf-8'), message.getAlgorithm(),
message.getMode())
messageToSend.setWinnerValue(winnerValue_encrypted.hex())
messageToSend.setStatus({'success': 'OK'})
return messageToSend
def bidOnAuction(self, data):
messageToSend = Bid_On_Auction_Validation_MR_Response()
message = Bid_On_Auction_Validation_MR_Request()
# Check message formatting
try:
message.unpack(data)
except:
status = {'error': 'Message badly formatted'}
status = encrypt_assymetric(REPOSITORY_PUBLIC_KEY,
json.dumps(status))
messageToSend.setStatus(status.hex())
return messageToSend
# Check Signature
if not message.verify_signature(REPOSITORY_PUBLIC_KEY):
status = {'error': 'Invalid signature'}
status = encrypt_assymetric(REPOSITORY_PUBLIC_KEY,
json.dumps(status))
messageToSend.setStatus(status.hex())
return messageToSend
# Unpack inside message
messageInside = Bid_On_Auction_Bid_CR_Request()
# Check inside message formatting
try:
messageInside.unpack(message.getPacket(), decode=False)
except:
status = {'error': 'Inside Message badly formatted'}
status = encrypt_assymetric(REPOSITORY_PUBLIC_KEY,
json.dumps(status))
messageToSend.setStatus(status.hex())
return messageToSend
# Check inside message validation
# Check Signature
hybrid_key = bytes.fromhex(
decrypt_assymetric(self.private_key,
bytes.fromhex(messageInside.getHybridKey())))
certData = decrypt_symmetric(
hybrid_key, bytes.fromhex(messageInside.getCertificate()))
try:
cert = certTools.load_certificate(certData)
except:
status = {'error': 'Not a certificate in certificate field'}
status = encrypt_assymetric(REPOSITORY_PUBLIC_KEY,
json.dumps(status))
messageToSend.setStatus(status.hex())
return messageToSend
if not messageInside.verify_signature(cert.public_key()):
status = {'error': 'Invalid signature from client'}
status = encrypt_assymetric(REPOSITORY_PUBLIC_KEY,
json.dumps(status))
messageToSend.setStatus(status.hex())
return messageToSend
# Check Certificate (chain)
if not certTools.verifyCertificateChainServerSide(cert):
status = {'error': 'Invalid certificate from client'}
status = encrypt_assymetric(REPOSITORY_PUBLIC_KEY,
json.dumps(status))
messageToSend.setStatus(status.hex())
return messageToSend
# DO INTERNAL STUFF TO VALIDATE BID
# ...
last_block = message.getLastBlock()
if not last_block['data']:
status = {'error': 'Auction closed'}
messageToSend.setStatus(status.hex())
return messageToSend
bid = Bid()
if last_block['type'] == auction_type['ENGLISH']:
block = json.loads(last_block['data'])
if not 'id' in block:
bid.unwrapBid(block)
if bid.getValue() >= messageInside.getBid():
status = {'error': 'Bid lower than last bid'}
messageToSend.setStatus(status.hex())
return messageToSend
# Dynamic code
# Create bid
bid_to_attach = Bid()
bid_to_attach.setBidType(last_block['type'])
bid_to_attach.setValue(messageInside.getBid())
if last_block['type'] == auction_type['BLIND']:
bid_to_attach.setIdentity(certData.hex())
else:
key = ''
for keyentry in self.auctionsKeys:
if keyentry['auc_id'] == messageInside.getAuctionId():
key = bytes.fromhex(keyentry['key'])
bid_to_attach.setIdentity(encrypt_symmetric(key, certData).hex())
bid_to_attach.setIdentityState(ENCRYPTED)
messageToSend.setBid(bid_to_attach.wrapBid('none'))
packet = message.toDict()
messageToSend.setPacket(packet)
status = {'success': 'OK'}
#info(len(messageToSend.strToByteArray()))
# Encrypt status
status = encrypt_assymetric(REPOSITORY_PUBLIC_KEY, json.dumps(status))
messageToSend.setStatus(status.hex())
return messageToSend
def listBidsOfClient(self, data):
messageToSend = List_Bids_Of_Client_CM_Response()
message = List_Bids_Of_Client_CM_Request()
# Check message formatting
try:
message.unpack(data)
except:
messageToSend.setStatus({'error': 'Message badly formatted'})
return messageToSend
# Check Signature
try:
cert = certTools.load_certificate(
bytes.fromhex(message.getCertificate()))
except:
messageToSend.setStatus(
{'error': 'Not a certificate in certificate field'})
return messageToSend
if not message.verify_signature(cert.public_key()):
messageToSend.setStatus({'error': 'Invalid signature'})
return messageToSend
# Check Certificate (chain)
if not certTools.verifyCertificateChainServerSide(cert):
messageToSend.setStatus({'error': 'Invalid certificate'})
return messageToSend
# Prepare packet to send to Repository
messageToRep = List_Bids_Of_Client_MR_Request()
messageToRep.sign_message(self.private_key)
data = self.sendMessageRepository(messageToRep.strToByteArray())
messageFromRep = List_Bids_Of_Client_MR_Response()
# Check message formatting
try:
messageFromRep.unpack(data)
except:
messageToSend.setStatus(
{'error': 'Message from Repository badly formatted'})
return messageToSend
# Check Signature
if not messageFromRep.verify_signature(REPOSITORY_PUBLIC_KEY):
messageToSend.setStatus(
{'error': 'Invalid signature from Repository'})
return messageToSend
# Check Status of Message
if 'error' in messageFromRep.getStatus():
messageToSend.setStatus({'error': 'Error in Repository'})
return messageToSend
# DO STUFF Internal Code ...
# ...
key = bytes.fromhex(
decrypt_assymetric(self.private_key,
bytes.fromhex(message.getSymKey())))
info(messageFromRep.getBlockchains())
bids_encrypted = encrypt_symmetric(key, "bids list",
message.getAlgorithm(),
message.getMode())
messageToSend.setBids(bids_encrypted.hex())
messageToSend.setStatus({'success': 'OK'})
return messageToSend
def terminateAuction(self, data):
messageToSend = Terminate_Auction_CM_Response()
message = Terminate_Auction_CM_Request()
# Check message formatting
try:
message.unpack(data)
except:
messageToSend.setStatus({'error': 'Message badly formatted'})
return messageToSend
# Check Signature
try:
cert = certTools.load_certificate(
bytes.fromhex(message.getCertificate()))
except:
messageToSend.setStatus(
{'error': 'Not a certificate in certificate field'})
return messageToSend
certToCompare = ''
for entry in self.tokens:
if entry['auc_id'] == message.getAuctionId():
certToCompare = certTools.load_certificate(
bytes.fromhex(entry['certificate']))
if not certToCompare:
messageToSend.setStatus({'error': 'Not a valid certificate'})
return messageToSend
if not message.verify_signature(certToCompare.public_key()):
messageToSend.setStatus({'error': 'Invalid signature'})
return messageToSend
# Check Certificate (chain)
if not certTools.verifyCertificateChainServerSide(cert):
messageToSend.setStatus({'error': 'Invalid certificate'})
return messageToSend
# Prepare packet to send to Repository
messageToRep = Terminate_Auction_MR_Request()
messageToRep.setAuctionId(message.getAuctionId())
messageToRep.sign_message(self.private_key)
data = self.sendMessageRepository(messageToRep.strToByteArray())
messageFromRep = Terminate_Auction_MR_Response()
# Check message formatting
try:
messageFromRep.unpack(data)
except:
messageToSend.setStatus(
{'error': 'Message from Repository badly formatted'})
return messageToSend
# Check Signature
if not messageFromRep.verify_signature(REPOSITORY_PUBLIC_KEY):
messageToSend.setStatus(
{'error': 'Invalid signature from Repository'})
return messageToSend
# Check Status of Message
if 'error' in messageFromRep.getStatus():
messageToSend.setStatus({'error': 'Error in Repository'})
return messageToSend
messageToSend.setStatus({'success': 'OK'})
return messageToSend
def createAuction(self, data):
messageToSend = Create_Auction_CM_Response()
message = Create_Auction_CM_Request()
# Check message formatting
try:
message.unpack(data)
except:
messageToSend.setStatus({'error': 'Message badly formatted'})
return messageToSend
# Check Signature
try:
cert = certTools.load_certificate(
bytes.fromhex(message.getCertificate()))
except:
messageToSend.setStatus(
{'error': 'Not a certificate in certificate field'})
return messageToSend
if not message.verify_signature(cert.public_key()):
messageToSend.setStatus({'error': 'Invalid signature'})
return messageToSend
# Check Certificate (chain)
if not certTools.verifyCertificateChainServerSide(cert):
messageToSend.setStatus({'error': 'Invalid certificate'})
return messageToSend
# Prepare packet to send to Repository
messageToRep = Create_Auction_MR_Request()
messageToRep.setAuctionType(message.getAuctionType())
messageToRep.setClaimTime(message.getClaimTime())
messageToRep.setTimeLimit(message.getTimeLimit())
messageToRep.setName(message.getName())
messageToRep.setDescription(message.getDescription())
messageToRep.sign_message(self.private_key)
data = self.sendMessageRepository(messageToRep.strToByteArray())
messageFromRep = Create_Auction_MR_Response()
# Check message formatting
try:
messageFromRep.unpack(data)
except:
messageToSend.setStatus(
{'error': 'Message from Repository badly formatted'})
return messageToSend
# Check Signature
if not messageFromRep.verify_signature(REPOSITORY_PUBLIC_KEY):
messageToSend.setStatus(
{'error': 'Invalid signature from Repository'})
return messageToSend
# Check Status of Message
if 'error' in messageFromRep.getStatus():
messageToSend.setStatus({'error': 'Error in Repository'})
return messageToSend
keyToAdd = generateSymKey()
self.auctionsKeys.append({
'auc_id': messageFromRep.getAuctionID(),
'key': keyToAdd.hex()
})
self.tokens.append({
'auc_id': messageFromRep.getAuctionID(),
'certificate': message.getCertificate()
})
if int(message.getAuctionType()) != auction_type['ENGLISH']:
self.blindKeys[messageFromRep.getAuctionID()] = []
messageToSend.setAuctionID(messageFromRep.getAuctionID())
messageToSend.setStatus({'success': 'OK'})
return messageToSend