def openWallet():
name = input('Wallet Name ("[new]" to create wallet): ')
if name != '[new]':
if not os.path.isfile('wallets/' + name + '.privkey'):
print(color.E('\nWallet not found!\n'))
openWallet()
phrase = getpass.getpass('Passphrase: ')
wallet = Wallet(name, phrase)
wallet.getKey()
if wallet.key:
print(color.I('\nOpened wallet ' + wallet.name + '\n'))
print('\nType "help" to view commands\n')
walletPrompt(wallet)
else:
openWallet()
else:
name = input('New wallet name: ')
phrase = getpass.getpass('New passphrase for wallet: ')
if not os.path.isfile('wallets/' + name + '.privkey'):
newkey = RSA.generate(3072)
privkey = newkey.exportKey().decode('utf-8')
with open('wallets/' + name + '.privkey', 'a') as privf:
enc = AESCipher(phrase)
encKey = enc.encrypt(privkey)
privf.write(str(encKey))
print(color.I('Wallet created successfully!\n'))
openWallet()
else:
print('Wallet with name "' + name + '" already exists!')
openWallet()
def encrypt_data(body):
# 如果请求的使用 AES 加密，则加密返回的数据
logger.debug('使用 AES 加密 body')
aes_cipher = AESCipher(client.secret_key)
body = aes_cipher.encrypt(utf8(body))
# 更新为加密后的数据
self.handler.clear_write_buffer()
self.handler.write(body)
self.handler.set_header('X-Api-Encrypt-Type', 'aes')
def encrypt_data(body):
# 如果请求的使用 AES 加密，则加密返回的数据
logger.debug('使用 AES 加密 body')
aes_cipher = AESCipher(client.secret_key)
body = aes_cipher.encrypt(utf8(body))
# 更新为加密后的数据
self.handler.clear_write_buffer()
self.handler.write(body)
self.handler.set_header('X-Api-Encrypt-Type', 'aes')
def encrypt_data(self):
aes_cipher = AESCipher(self.secret_key)
headers_str = json_util.dumps(self.request_data.headers)
# 加密 Headers 和 url
self.request_data.headers = {
'Content-Type': 'application/octet-stream',
'X-Api-Encrypted-Headers': aes_cipher.encrypt(utf8(headers_str)),
'X-Api-Encrypted-Uri': aes_cipher.encrypt(utf8(self.request_data.uri))
}
self.request_data.uri = '/?_t=%d&_nonce=%s' % \
(int(time.time()), text_type(random.random()))
# 设置一个新的 url
url = self.api_server.strip() + self.request_data.uri
if self.request_data.body is not None and len(self.request_data.body) > 0:
self.request_data.body = aes_cipher.encrypt(utf8(self.request_data.body))
logger.debug(self.request_data.body)
return url
def encrypt_data(self):
aes_cipher = AESCipher(self.secret_key)
headers_str = json_util.dumps(self.request_data.headers)
# 加密 Headers 和 url
self.request_data.headers = {
'Content-Type': 'application/octet-stream',
'X-Api-Encrypted-Headers': aes_cipher.encrypt(utf8(headers_str)),
'X-Api-Encrypted-Uri':
aes_cipher.encrypt(utf8(self.request_data.uri))
}
self.request_data.uri = '/?_t=%d&_nonce=%s' % \
(int(time.time()), text_type(random.random()))
# 设置一个新的 url
url = self.api_server.strip() + self.request_data.uri
if self.request_data.body is not None and len(
self.request_data.body) > 0:
self.request_data.body = aes_cipher.encrypt(
utf8(self.request_data.body))
logger.debug(self.request_data.body)
return url
"attributes": {
'epoch_time': int(time.time()),
'a': "aaa",
'c': "ccc",
'b': "bbb"
}
}
# cleartext_message = canonicaljson.encode_canonical_json(cleartext_message)
# logging.info("Canonical JSON message " + cleartext_message.decode('utf-8'))
if args.mode == 'encrypt':
logging.info("Starting AES encryption")
ac = AESCipher(key)
logging.info("Loaded Key: " + ac.printKeyInfo())
msg = ac.encrypt(json.dumps(cleartext_message).encode('utf-8'),
associated_data='')
logging.info("End AES encryption")
logging.info("Start PubSub Publish")
resp = publisher.publish(topic_name, data=msg.encode('utf-8'))
logging.info("Published Message: " + str(msg))
logging.info("Published MessageID: " + resp.result())
logging.info("End PubSub Publish")
if args.mode == 'sign':
logging.info("Starting signature")
hh = HMACFunctions(key)
logging.info("Loaded Key: " + hh.printKeyInfo())
msg_hash = hh.hash(json.dumps(cleartext_message).encode('utf-8'))
logging.info("End signature")
logging.info("Start PubSub Publish")
class ClientConnector(Protocol):
"""Handle one connection to a client.
Its functions include:
- Initiate connection to client.
- Send an authentication message to client to start transmission.
- Receive encrypted data packets from client, separated by split_char.
- Decrypt data packets. Get the ID (first 2 bytes of decrypted text).
Create a connection to HTTP proxy for each unique ID.
- Forward request to HTTP proxy. Encrypt and send back the response.
- Close connection to HTTP proxy for a given ID if a packet
of the ID with close_char is received.
"""
def __init__(self, initiator):
self.initiator = initiator
self.main_pw = self.initiator.main_pw
# control characters
self.split_char = chr(27) + chr(28) + "%X" % struct.unpack(
'B', self.main_pw[-2:-1])[0] + "%X" % struct.unpack(
'B', self.main_pw[-3:-2])[0] + chr(31)
self.client_pub = self.initiator.client_pub
self.session_pw = urandom(16)
self.cipher = AESCipher(self.session_pw, self.main_pw)
self.authenticated = False
self.buffer = ""
self.latency = 10000
self.i = initiator.register()
self.idchar = (str(self.i) if 10 <= self.i <= 99 else '0' +
str(self.i))
self.cronjob = None
self.cancel_job = None
def generate_auth_msg(self):
"""Generate encrypted message. For auth and init.
The message is in the form
server_sign(main_pw) (HEX) +
client_pub(session_pw) + id
Total length is 512 + 256 + 2 = 770 bytes
"""
pw_enc = self.client_pub.encrypt(self.session_pw, None)[0]
return '\r\n'.join(
(self.initiator.signature_to_client, pw_enc, self.idchar,
repr(self.initiator.client_recv_index_dict[self.i])))
def ping_send(self):
"""Send the initial ping message to the client at a certain interval.
Ping mechanism (S for server, C for client, t-i for i-th timestamp):
packet 0: S->C, t-0
packet 1: C->S, t-0 + t-1
packet 2: S->C, t-1
In this way, both server and client get the round-trip latency.
Packet format (before encryption):
"1" (1 byte) (type flag for ping)
seq (1 byte) (0, 1 or 2)
timestamp (11 or 22 bytes) (time in milliseconds, in hexagon)
"""
raw_packet = "1" + "0" + get_timestamp()
to_write = self.cipher.encrypt(raw_packet) + self.split_char
if self.authenticated:
#logging.debug("send ping0")
self.transport.write(to_write)
interval = random.randint(500, 1500) / 100
if self.initiator.obfs_level == 3:
RESET_INTERVAL = 5
else:
RESET_INTERVAL = 2
self.cronjob = reactor.callLater(interval, self.ping_send)
self.cancel_job = reactor.callLater(RESET_INTERVAL, self.close)
def ping_recv(self, msg):
"""Parse ping 1 (without flag & seq) and send ping 2."""
#logging.debug("recv ping1")
self.cancel_job.cancel()
time0 = parse_timestamp(msg[:11])
self.latency = int(time() * 1000) - time0
logging.debug("latency: %dms" % self.latency)
raw_packet = "1" + "2" + msg[11:]
to_write = self.cipher.encrypt(raw_packet) + self.split_char
if self.transport:
#logging.debug("send ping2")
self.transport.write(to_write)
def connectionMade(self):
"""Event handler of being successfully connected to the client."""
logging.info("connected to client " +
addr_to_str(self.transport.getPeer()))
self.transport.write(self.generate_auth_msg() + self.split_char)
def dataReceived(self, recv_data):
"""Event handler of receiving some data from client.
Split, decrypt and hand them back to Control.
"""
# Avoid repetition caused by ping
# logging.debug("received %d bytes from client " % len(recv_data) +
# addr_to_str(self.transport.getPeer()))
self.buffer += recv_data
# a list of encrypted data packages
# the last item may be incomplete
recv = self.buffer.split(self.split_char)
# leave the last (may be incomplete) item intact
for text_enc in recv[:-1]:
text_dec = self.cipher.decrypt(text_enc)
# flag is 0 for normal data packet, 1 for ping packet, 2 for auth
flag = int(text_dec[0])
if flag == 0:
self.initiator.client_recv(text_dec[1:], self)
elif flag == 2:
auth_str = "AUTHENTICATED" + self.idchar
if text_dec[1:].startswith(auth_str):
max_recved_idx = eval(text_dec[1:].lstrip(auth_str))
self.authenticate_success()
self.initiator.retransmit_clientconn_reload(
self, max_recved_idx)
else:
self.close()
else:
# strip off type and seq (both are always 1)
self.ping_recv(text_dec[2:])
self.buffer = recv[-1] # incomplete message
def authenticate_success(self):
self.authenticated = True
logging.debug("Authentication confirm string received.")
self.initiator.add_cli(self)
self.ping_send()
def close(self):
'''a secure way to abort the connection'''
try:
self.cronjob.cancel()
except Exception:
pass
# self.initiator.remove_cli(self)
self.transport.loseConnection()
def connectionLost(self, reason):
"""Event handler of losing the connection to the client.
Call Control to handle it.
"""
if self.authenticated:
logging.info("client connection lost: " +
addr_to_str(self.transport.getPeer()))
self.authenticated = False
self.initiator.client_lost(self.i)
def write(self, data, conn_id, index):
"""Encrypt and write data the client.
Encrypted packets should be separated by split_char.
Raw packet structure:
type (1 byte) (0 for normal data packet)
id (2 bytes)
index (6 bytes)
data
"""
if index < 100000:
index = '0' * (6 - len(str(index))) + str(index)
else:
index = str(index)
# get current time with base 36 as a string in a certain length .
to_write = self.cipher.encrypt("0" + conn_id + index + data) +\
self.split_char
logging.debug(
"sending %d bytes to client %s with id %s" %
(len(data), addr_to_str(self.transport.getPeer()), conn_id))
self.transport.write(to_write)
publisher = pubsub.PublisherClient()
logging.info("Start PubSub Publish")
## Send 5 messages using the same symmetric key...
for x in range(5):
cleartext_message = {
"data": "foo".encode(),
"attributes": {
'epoch_time': int(time.time()),
'a': "aaa",
'c': "ccc",
'b': "bbb"
}
}
logging.debug("Start AES encryption")
encrypted_message = cc.encrypt(
json.dumps(cleartext_message).encode('utf-8'),
associated_data=tenantID)
logging.debug("End AES encryption")
logging.debug("Encrypted Message with dek: " + encrypted_message)
topic_name = 'projects/{project_id}/topics/{topic}'.format(
project_id=pubsub_project_id,
topic=PUBSUB_TOPIC,
)
resp = publisher.publish(topic_name,
data=encrypted_message.encode(),
kms_key=name,
dek_wrapped=dek_encrypted)
logging.info("Published Message: " + encrypted_message)
logging.info("Published MessageID: " + resp.result())
class ClientConnector(Protocol):
"""Handle one connection to a client.
Its functions include:
- Initiate connection to client.
- Send an authentication message to client to start transmission.
- Receive encrypted data packets from client, separated by split_char.
- Decrypt data packets. Get the ID (first 2 bytes of decrypted text).
Create a connection to HTTP proxy for each unique ID.
- Forward request to HTTP proxy. Encrypt and send back the response.
- Close connection to HTTP proxy for a given ID if a packet
of the ID with close_char is received.
"""
def __init__(self, initiator):
self.initiator = initiator
self.main_pw = self.initiator.main_pw
# control characters
# self.split_char = chr(27) + chr(28) + chr(29) + chr(30) + chr(31)
self.split_char = chr(27) + chr(28) + "%X" % struct.unpack('B', self.main_pw[-2:-1])[
0] + "%X" % struct.unpack('B', self.main_pw[-3:-2])[0] + chr(31)
self.pri = self.initiator.initiator.pri
self.client_pub = self.initiator.client_pub
self.session_pw = urandom(16)
self.cipher = AESCipher(self.session_pw, self.main_pw)
self.authenticated = False
self.buffer = ""
self.latency = 10000
self.idchar = initiator.register()
self.cronjob = None
self.cancel_job = None
def generate_auth_msg(self):
"""Generate encrypted message.
The message is in the form
server_sign(main_pw) (HEX) +
client_pub(session_pw) + id
Total length is 512 + 256 + 2 = 770 bytes
"""
hex_sign = '%X' % self.pri.sign(self.main_pw, None)[0]
pw_enc = self.client_pub.encrypt(self.session_pw, None)[0]
return hex_sign + pw_enc + self.idchar
def ping_send(self):
"""Send the initial ping message to the client at a certain interval.
Ping mechanism (S for server, C for client, t-i for i-th timestamp):
packet 0: S->C, t-0
packet 1: C->S, t-0 + t-1
packet 2: S->C, t-1
In this way, both server and client get the round-trip latency.
Packet format (before encryption):
"1" (1 byte) (type flag for ping)
seq (1 byte) (0, 1 or 2)
timestamp (11 or 22 bytes) (time in milliseconds, in hexagon)
"""
raw_packet = "1" + "0" + get_timestamp()
to_write = self.cipher.encrypt(raw_packet) + self.split_char
if self.authenticated:
#logging.debug("send ping0")
self.transport.write(to_write)
interval = random.randint(500, 1500) / 100
if self.initiator.obfs_level == 3:
RESET_INTERVAL = 5
else:
RESET_INTERVAL = 2
self.cronjob = reactor.callLater(interval, self.ping_send)
self.cancel_job = reactor.callLater(RESET_INTERVAL, self.close)
def ping_recv(self, msg):
"""Parse ping 1 (without flag & seq) and send ping 2."""
#logging.debug("recv ping1")
self.cancel_job.cancel()
time0 = parse_timestamp(msg[:11])
self.latency = int(time() * 1000) - time0
logging.debug("latency: %dms" % self.latency)
raw_packet = "1" + "2" + msg[11:]
to_write = self.cipher.encrypt(raw_packet) + self.split_char
if self.transport:
#logging.debug("send ping2")
self.transport.write(to_write)
def connectionMade(self):
"""Event handler of being successfully connected to the client."""
logging.info("connected to client " +
addr_to_str(self.transport.getPeer()))
self.transport.write(self.generate_auth_msg())
def dataReceived(self, recv_data):
"""Event handler of receiving some data from client.
Split, decrypt and hand them back to Control.
"""
# Avoid repetition caused by ping
# logging.debug("received %d bytes from client " % len(recv_data) +
# addr_to_str(self.transport.getPeer()))
self.buffer += recv_data
# a list of encrypted data packages
# the last item may be incomplete
recv = self.buffer.split(self.split_char)
# leave the last (may be incomplete) item intact
for text_enc in recv[:-1]:
text_dec = self.cipher.decrypt(text_enc)
# flag is 0 for normal data packet, 1 for ping packet
flag = int(text_dec[0])
if flag == 0:
self.initiator.client_recv(text_dec[1:])
elif flag == 2:
if text_dec[1:] == "AUTHENTICATED" + self.idchar:
self.authenticate_success()
else:
self.close()
else:
# strip off type and seq (both are always 1)
self.ping_recv(text_dec[2:])
self.buffer = recv[-1] # incomplete message
def authenticate_success(self):
self.authenticated = True
logging.debug("Authentication confirm string received.")
self.initiator.add_cli(self)
self.ping_send()
def close(self):
'''a secure way to abort the connection'''
try:
self.cronjob.cancel()
except Exception:
pass
self.transport.loseConnection()
def connectionLost(self, reason):
"""Event handler of losing the connection to the client.
Call Control to handle it.
"""
if self.authenticated:
logging.info("client connection lost: " +
addr_to_str(self.transport.getPeer()))
self.authenticated = False
self.initiator.client_lost(self)
def write(self, data, conn_id, index):
"""Encrypt and write data the client.
Encrypted packets should be separated by split_char.
Raw packet structure:
type (1 byte) (0 for normal data packet)
id (2 bytes)
index (6 bytes)
data
"""
to_write = self.cipher.encrypt("0" + conn_id + index + data) +\
self.split_char
logging.debug("sending %d bytes to client %s with id %s" % (len(data),
addr_to_str(
self.transport.getPeer()),
conn_id))
self.transport.write(to_write)
logging.info(
' For service account at: https://www.googleapis.com/service_accounts/v1/metadata/x509/'
+ args.recipient)
cert_url = 'https://www.googleapis.com/service_accounts/v1/metadata/x509/' + args.recipient
r = requests.get(cert_url)
pem = r.json().get(args.recipient_key_id)
rs = RSACipher(public_key_pem=pem)
# Create a new TINK AES key used for data encryption
cc = AESCipher(encoded_key=None)
dek = cc.getKey()
logging.info("Generated DEK: " + cc.printKeyInfo())
# now use the DEK to encrypt the pubsub message
encrypted_payload = cc.encrypt(
json.dumps(cleartext_message).encode('utf-8'), associated_data="")
logging.info("DEK Encrypted Message: " + encrypted_payload)
# encrypt the DEK with the service account's key
dek_wrapped = rs.encrypt(dek.encode('utf-8'))
logging.info("Wrapped DEK " + dek_wrapped.decode('utf-8'))
# now publish the dek-encrypted message, the encrypted dek
resp = publisher.publish(topic_name,
data=encrypted_payload.encode('utf-8'),
service_account=args.recipient,
key_id=args.recipient_key_id,
dek_wrapped=dek_wrapped)
# alternatively, dont' bother with the dek; just use the rsa key itself to encrypt the message
#encrypted_payload = rs.encrypt(json.dumps(cleartext_message).encode('utf-8'))
#resp=publisher.publish(topic_name, data=json.dumps(encrypted_payload).encode('utf-8'), service_account=args.recipient, key_id=args.recipient_key_id)
