def _get_encryption_object(self, key):
if self.type == "aes":
return AES.new(key, AES.MODE_ECB)
elif self.type == "serpent":
return Serpent.new(key, Serpent.MODE_ECB)
elif self.type == "twofish":
return TwoFish.new(key, TwoFish.MODE_ECB)
else:
return False
def _get_encryption_object(self,key): if self.type == "aes": return AES.new(key, AES.MODE_ECB) elif self.type == "serpent": return Serpent.new(key, Serpent.MODE_ECB) elif self.type == "twofish": return TwoFish.new(key, TwoFish.MODE_ECB) else: return False
if cip <> cipher.encrypt(msg):
print 'ERROR! for TDES2/3 in %i'%i
if msg <> cipher.decrypt(cip):
print 'DECRYPTION ERROR! for DES in %i'%i
# Serpent128/192/256
print "Serpent"
from CryptoPlus.Cipher import python_Serpent
for d in dict_serpent128,dict_serpent192,dict_serpent256:
for i in range(0,len(d)/3):
msg = d['msg%i'%i].decode('hex')
key = d['key%i'%i].decode('hex')
cip = d['cip%i'%i].decode('hex')
cipher = python_Serpent.new(key,python_Serpent.MODE_ECB)
if cip <> cipher.encrypt(msg):
print 'ERROR! for Serpent in %i'%i
if msg <> cipher.decrypt(cip):
print 'DECRYPTION ERROR! for Serpent in %i'%i
# CMAC-AES128/192/256
print "CMAC-AES"
from CryptoPlus.Cipher import python_AES
for d in dict_cmac_aes128,dict_cmac_aes192,dict_cmac_aes256:
for i in range(0,len(d)/4):
msg = d['msg%i'%i].decode('hex')
key = d['key%i'%i].decode('hex')
if msg == '\x00':
from CryptoPlus.Cipher import python_Serpent
import time
key = '000102030405060708090A0B0C0D0E0F'.decode('hex')
IV = '00000000000000000000000000000000'.decode('hex')
plaintext = ('33B3DC87EDDD9B0F6A1F407D14919365' * 32 * 1000).decode('hex')
cipher_init_time = time.time()
cipher = python_Serpent.new(key, python_Serpent.MODE_CBC, IV)
cipher_text = cipher.encrypt(plaintext)
cipher_finish_time = time.time()
cipher_time = cipher_finish_time - cipher_init_time
print '\nTiempo de cifrado -> ' + str(cipher_time)
decipher_init_time = time.time()
decipher = python_Serpent.new(key, python_Serpent.MODE_CBC, IV)
decipher_text = decipher.decrypt(cipher_text).encode('hex').upper()
decipher_finish_time = time.time()
decipher_time = decipher_finish_time - decipher_init_time
print 'Tiempo de descifrado -> ' + str(decipher_time)
def run_session(sess_key):
cipher = serpent.new(key=sess_key,
mode=serpent.MODE_CFB,
segment_size=16)
decipher = serpent.new(key=sess_key,
mode=serpent.MODE_CFB,
segment_size=16)
while True:
login = input("\nLogin: "******"Password: "******"Authentication failed:", auth_result)
def get_command():
cmd, *args = input("\nEnter command: ").split()
return cmd, args
while True:
command, args = get_command()
if command == 'r':
if len(args) == 0:
print("You need to specify file name.")
continue
filename = args[0]
send_msg(CMD.RECV, cipher)
send_msg(filename, cipher)
print("Sent filename to server.")
result = recv_msg(decipher, True)
if result == MSG.SUCCESS:
text = recv_msg(decipher, True)
print("Received text from server.")
print(text)
elif result == MSG.ERROR:
error_text = recv_msg(decipher, True)
print("Failed to receive text from server:", error_text)
elif result == MSG.EXP_SESS:
print("Session expired.")
return True
else:
print("Invalid result.")
elif command == 'q':
send_msg(CMD.QUIT, cipher)
print("Quit.")
return False
elif command == 's':
if len(args) == 0:
print("You need to specify file name.")
continue
filename = args[0]
text = read_file(filename)
send_msg(CMD.SEND, cipher)
send_msg(text, cipher)
print("Sent text to server.")
send_msg(filename.split(sep='/')[-1], cipher)
print("Sent filename to server.")
result = recv_msg(decipher, True)
if result == MSG.EXP_SESS:
print("Session expired.")
return True
elif command == 'g':
private_key = generate_new_key()
print("Generated new private RSA key.")
else:
print("Unknown command.")
unpad = lambda s : s[0:-ord(s[-1])]
encoded = open("../encrypted", "r").read()
ha = SHA256.new()
ha.update(encoded)
check = ha.digest().encode("hex")
if(check != "6b39ac2220e703a48b3de1e8365d9075297c0750e9e4302fc3492f98bdf3a0b0"):
print "BAD INPUT"
sys.exit()
IV = '5353544943323031352d537461676533'.decode('hex')
print IV
obj = python_Serpent.new(key.decode('hex'), python_Serpent.MODE_CBC, IV)
print "Trying"
decoded = obj.decrypt(encoded)[:-2]
print "Done"
hashed = SHA256.new()
hashed.update(decoded)
res = hashed.digest().encode("hex")
if(res == "7beabe40888fbbf3f8ff8f4ee826bb371c596dd0cebe0796d2dae9f9868dd2d2"):
print "Yesss !"
else:
print "Failed "
f = open("decrypted", "w")
f.write(decoded)
def run_session(sess_key):
cipher = serpent.new(key=sess_key,
mode=serpent.MODE_CFB,
segment_size=16)
decipher = serpent.new(key=sess_key,
mode=serpent.MODE_CFB,
segment_size=16)
while True:
login = recv_msg(decipher)
password = recv_msg(decipher)
is_auth, user_dir = authenticate(login, password)
if is_auth:
send_msg(MSG.SUCCESS, cipher)
break
else:
send_msg("invalid username/password", cipher)
t1 = time.clock()
while True:
cmd = recv_msg(decipher, True)
if cmd == CMD.RECV:
t2 = time.clock()
if t2 - t1 > SESSION_MAX_TIME:
print("Session expired.")
c.recv(4096)
send_msg(MSG.EXP_SESS, cipher)
return True
filename = recv_msg(decipher, True)
print("Received filename from client.")
print(filename)
path = os.path.join(user_dir, filename)
text = read_file(path)
if text is None:
send_msg(MSG.ERROR, cipher)
text = "No such file!"
else:
send_msg(MSG.SUCCESS, cipher)
send_msg(text, cipher)
print("Sent text to client.")
elif cmd == CMD.SEND:
t2 = time.clock()
if t2 - t1 > SESSION_MAX_TIME:
print("Session expired.")
c.recv(4096)
c.recv(4096)
send_msg(MSG.EXP_SESS, cipher)
return True
text = recv_msg(decipher, True)
print("Received text from client.")
print(text)
filename = recv_msg(decipher, True)
print("Received filename from client.")
print(filename)
path = os.path.join(user_dir, filename)
save_file(text, path)
send_msg(MSG.SUCCESS, cipher)
elif cmd == CMD.QUIT:
return False
else:
print("Invalid cmd.")
def run_session(sess_key):
nonlocal cipher, decipher
cipher = serpent.new(key=sess_key,
mode=serpent.MODE_CFB,
segment_size=16)
decipher = serpent.new(key=sess_key,
mode=serpent.MODE_CFB,
segment_size=16)
while not login_event.is_set():
time.sleep(1)
while not code_event.is_set():
time.sleep(1)
login_event.clear()
code_event.clear()
while True:
command, args = get_command()
if command == 'r':
if len(args) == 0:
print("You need to specify file name.")
continue
filename = args[0]
send_msg(CMD.RECV)
send_msg(filename)
print("Sent filename to server.")
result = recv_msg(decode=True)
if result == MSG.SUCCESS:
text = recv_msg(decode=True)
print("Received text from server.")
print(text)
elif result == MSG.ERROR:
error_text = recv_msg(decode=True)
print("Failed to receive text from server:", error_text)
elif result == MSG.EXP_SESS:
print("Session expired.")
expired_event.set()
return True
else:
print("Invalid result.")
elif command == 'q':
send_msg(CMD.QUIT)
print("Quit.")
return False
elif command == 's':
if len(args) == 0:
print("You need to specify file name.")
continue
filename = args[0]
text = read_file(filename)
short_name = filename.split(sep='/')[-1]
text = '\0'.join([short_name, text])
send_msg(CMD.SEND)
send_msg(text)
print("Sent text to server.")
result = recv_msg(decode=True)
if result == MSG.EXP_SESS:
print("Session expired.")
expired_event.set()
return True
elif command == 'g':
private_key = generate_new_key()
print("Generated new private RSA key.")
else:
print("Unknown command.")
if cip != cipher.encrypt(msg):
print('ERROR! for TDES2/3 in %i'%i)
if msg != cipher.decrypt(cip):
print('DECRYPTION ERROR! for DES in %i'%i)
# Serpent128/192/256
print("Serpent")
from CryptoPlus.Cipher import python_Serpent
for d in dict_serpent128,dict_serpent192,dict_serpent256:
for i in range(0,len(d)//3):
msg = codecs.decode(d['msg%i'%i], 'hex')
key = codecs.decode(d['key%i'%i], 'hex')
cip = codecs.decode(d['cip%i'%i], 'hex')
cipher = python_Serpent.new(key,python_Serpent.MODE_ECB)
if cip != cipher.encrypt(msg):
print('ERROR! for Serpent in %i'%i)
if msg != cipher.decrypt(cip):
print('DECRYPTION ERROR! for Serpent in %i'%i)
# CMAC-AES128/192/256
print("CMAC-AES")
from CryptoPlus.Cipher import python_AES
for d in dict_cmac_aes128,dict_cmac_aes192,dict_cmac_aes256:
for i in range(0,len(d)//4):
msg = codecs.decode(d['msg%i'%i], 'hex')
key = codecs.decode(d['key%i'%i], 'hex')
if msg == b'\x00':
def run_session(sess_key):
cipher = serpent.new(key=sess_key,
mode=serpent.MODE_CFB,
segment_size=16)
decipher = serpent.new(key=sess_key,
mode=serpent.MODE_CFB,
segment_size=16)
while True:
login = recv_msg(decipher)
password = recv_msg(decipher)
is_auth, user_dir = authenticate(login, password)
if is_auth:
send_msg(MSG.SUCCESS, cipher)
break
else:
send_msg("invalid username/password", cipher)
totp = pyotp.TOTP('base32secret3232', interval=60)
with open(os.path.join(user_dir, 'userinfo.json')) as f:
data = json.load(f)
chat_id = data['chat_id']
token = data['token']
code = send_code(totp, token, chat_id)
while True:
client_code = recv_msg(decipher, True)
if totp.verify(client_code):
send_msg(MSG.SUCCESS, cipher)
break
elif client_code == code:
send_msg(MSG.CODE_EXPIRED, cipher)
code = send_code(totp, token, chat_id)
else:
send_msg(MSG.CODE_INVALID, cipher)
t1 = time.time()
while True:
cmd = recv_msg(decipher, True)
t2 = time.time()
if t2 - t1 > SESSION_MAX_TIME:
print("Session expired.")
c.recv(4096)
send_msg(MSG.EXP_SESS, cipher)
return True
if cmd == CMD.RECV:
filename = recv_msg(decipher, True)
print("Received filename from client.")
print(filename)
path = os.path.join(user_dir, filename)
text = read_file(path)
if text is None:
send_msg(MSG.ERROR, cipher)
text = "No such file!"
else:
send_msg(MSG.SUCCESS, cipher)
send_msg(text, cipher)
print("Sent text to client.")
elif cmd == CMD.SEND:
text = recv_msg(decipher, True)
print("Received text from client.")
filename, text = text.split(sep='\0')
print(filename)
print(text)
path = os.path.join(user_dir, filename)
save_file(text, path)
send_msg(MSG.SUCCESS, cipher)
elif cmd == CMD.QUIT:
return False
else:
print("Invalid cmd.")