easyctf/easyctf-2017
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

Update encrypt.py

Browse source
This commit is contained in:
MegaAbsol 2017-03-13 20:19:36 -04:00 committed by GitHub
parent 9cb458c387
commit 87ad9f71c9
1 changed files with 55 additions and 17 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

72
paillier-service/encrypt.py
View file

@ -1,17 +1,55 @@
#easyctf{3ncrypt_m3!} #/usr/bin/env python
p = 8144194198641127053467521063088973929365485175581336279930490759203400725623086153929294542350943040473375790841894343662879542882143670576484983482676929
q = 9349990237178389195581522619084514015305492951423232071317276234453300521753669715890246992825146527366147991960266180184131002960074501683578205688324193 import SocketServer,threading,os,time
n = p*q import signal
l = (p-1)*(q-1)
g = n+1
mu = 50461441817124067084598541006218828107720370909059246792962232658242869571003990015294541684702084151173329882441771747115542549562899610400402036968340066285127945127930744036805832623326255171902722383305695091973581469008587730106329093915495096858331002656658189454919392650001488548518482449865519307486 PORT = 8570
m = int(raw_input('Enter a message to encrypt: '))
r = int(raw_input('Enter r (int): ')) class incoming(SocketServer.BaseRequestHandler):
if m > 100000000000000000 or m < 0: def handle(self):
print('Bad m. We only take m from 0 to 100000000000000000.') atfork()
exit() req = self.request
if r > 100000000000000000 or r < 0:
print('Bad r. We only take r from 0 to 100000000000000000.') def recvline():
exit() buf = ""
c = (pow(g,m,n**2)*pow(r,n,n**2))%(n**2) while not buf.endswith("\n"):
print 'c: '+str(c) buf += req.recv(1)
return buf
signal.alarm(120)
try:
p = 8144194198641127053467521063088973929365485175581336279930490759203400725623086153929294542350943040473375790841894343662879542882143670576484983482676929
q = 9349990237178389195581522619084514015305492951423232071317276234453300521753669715890246992825146527366147991960266180184131002960074501683578205688324193
n = p*q
l = (p-1)*(q-1)
g = n+1
mu = 50461441817124067084598541006218828107720370909059246792962232658242869571003990015294541684702084151173329882441771747115542549562899610400402036968340066285127945127930744036805832623326255171902722383305695091973581469008587730106329093915495096858331002656658189454919392650001488548518482449865519307486
#m = int(req.recv('Enter a message to encrypt: '))
req.sendall('Enter a message to encrypt: \n')
m = int(recvline())
req.sendall('Enter r (int): \n')
r = int(recvline())
if m > 100000000000000000 or m < 0:
print('Bad m. We only take m from 0 to 100000000000000000.')
exit()
if r > 100000000000000000 or r < 0:
print('Bad r. We only take r from 0 to 100000000000000000.')
exit()
c = (pow(g,m,n**2)*pow(r,n,n**2))%(n**2)
print 'c: '+str(c)
except:
pass
req.sendall("Bye!\n")
req.close()
class ReusableTCPServer(SocketServer.ForkingMixIn, SocketServer.TCPServer):
pass
SocketServer.TCPServer.allow_reuse_address = True
server = ReusableTCPServer(("0.0.0.0", PORT), incoming)
print "Server listening on port %d" % PORT
server.serve_forever()