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server.py
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server.py
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#! /usr/bin/env python
# -*- coding: utf-8 -*-
# vim:fenc=utf-8
#
# Copyright © 2018 hzshang <hzshang15@gmail.com>
#
# Distributed under terms of the MIT license.
from crypto import RSA,DES
import socket
import sys
from net import send,recv,pack_num,unpack_num
import select
def main():
if len(sys.argv) != 3:
print "Example: python %s HOST PORT"%sys.argv[0]
exit(0)
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
server.bind((sys.argv[1],int(sys.argv[2])))
server.listen(1)
con,addr = server.accept()
server.close()
#send N,e
r=RSA(128)
send(con,pack_num(r.N))
send(con,pack_num(r.e))
# recv des key,iv
key=pack_num(r.decrypt(unpack_num(recv(con))))
iv=pack_num(r.decrypt(unpack_num(recv(con))))
des=DES(key,iv)
socks=[con.fileno(),sys.stdin.fileno()]
mark = True
while mark:
readable,_,error=select.select(socks,[],socks)
for i in readable:
if i == con.fileno():
raw=recv(con)
if not raw:
mark = False
break
data = des.decrypt(raw)
sys.stdout.write(data)
elif i == sys.stdin.fileno():
data = sys.stdin.readline()
if not data:
mark = False
break
send(con,des.encrypt(data))
con.close()
if __name__ == "__main__":
main()