Example
import time
import socket
import threading
import hashlib
import itertools
import sys
from Crypto import Random
from Crypto.PublicKey import RSA
from CryptoPlus.Cipher import IDEA
#animating loading
done = False
def animate():
for c in itertools.cycle(['....','.......','..........','............']):
if done:
break
sys.stdout.write('\rCONFIRMING CONNECTION TO SERVER '+c)
sys.stdout.flush()
time.sleep(0.1)
#public key and private key
random_generator = Random.new().read
key = RSA.generate(1024,random_generator)
public = key.publickey().exportKey()
private = key.exportKey()
#hashing the public key
hash_object = hashlib.sha1(public)
hex_digest = hash_object.hexdigest()
#Setting up socket
server = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
#host and port input user
host = raw_input("Server Address To Be Connected -> ")
port = int(input("Port of The Server -> "))
#binding the address and port
server.connect((host, port))
# printing "Server Started Message"
thread_load = threading.Thread(target=animate)
thread_load.start()
time.sleep(4)
done = True
def send(t,name,key):
mess = raw_input(name + " : ")
key = key[:16]
#merging the message and the name
whole = name+" : "+mess
ideaEncrypt = IDEA.new(key, IDEA.MODE_CTR, counter=lambda : key)
eMsg = ideaEncrypt.encrypt(whole)
#converting the encrypted message to HEXADECIMAL to readable
eMsg = eMsg.encode("hex").upper()
if eMsg != "":
print ("ENCRYPTED MESSAGE TO SERVER-> "+eMsg)
server.send(eMsg)
def recv(t,key):
newmess = server.recv(1024)
print ("\nENCRYPTED MESSAGE FROM SERVER-> " + newmess)
key = key[:16]
decoded = newmess.decode("hex")
ideaDecrypt = IDEA.new(key, IDEA.MODE_CTR, counter=lambda: key)
dMsg = ideaDecrypt.decrypt(decoded)
print ("\n**New Message From Server** " + time.ctime(time.time()) + " : " + dMsg + "\n")
while True:
server.send(public)
confirm = server.recv(1024)
if confirm == "YES":
server.send(hex_digest)
#connected msg
msg = server.recv(1024)
en = eval(msg)
decrypt = key.decrypt(en)
# hashing sha1
en_object = hashlib.sha1(decrypt)
en_digest = en_object.hexdigest()
print ("\n-----ENCRYPTED PUBLIC KEY AND SESSION KEY FROM SERVER-----")
print (msg)
print ("\n-----DECRYPTED SESSION KEY-----")
print (en_digest)
print ("\n-----HANDSHAKE COMPLETE-----\n")
alais = raw_input("\nYour Name -> ")
while True:
thread_send = threading.Thread(target=send,args=("------Sending Message------",alais,en_digest))
thread_recv = threading.Thread(target=recv,args=("------Recieving Message------",en_digest))
thread_send.start()
thread_recv.start()
thread_send.join()
thread_recv.join()
time.sleep(0.5)
time.sleep(60)
server.close()
