129 lines
2.8 KiB
Python
Executable File
129 lines
2.8 KiB
Python
Executable File
from appPublic.rsa import RSA
|
||
from appPublic.rc4 import RC4
|
||
try:
|
||
import ujson as json
|
||
except:
|
||
import json
|
||
import random
|
||
|
||
class DeliverPacket:
|
||
def __init__(self,sender,c,k,s):
|
||
self.sender = sender
|
||
self.c = c
|
||
self.k = k
|
||
self.s = s
|
||
|
||
def pack(self):
|
||
d = {
|
||
"sender":self.sender,
|
||
"c":self.c,
|
||
"k":self.k,
|
||
"s":self.s,
|
||
}
|
||
return json.dumps(d)
|
||
|
||
def unpack(self,body):
|
||
d = json.loads(body)
|
||
self.sender = d.sender
|
||
self.c = d['c']
|
||
self.k = d['k']
|
||
self.s = d['s']
|
||
|
||
class RSAPeer:
|
||
def __init__(self,myid,myPrikey,pearPubKey=None):
|
||
self.myid = myid
|
||
self.mypri = myPrikey
|
||
self.peerpub = pearPubKey
|
||
self.rsa = RSA()
|
||
|
||
def getPeerPublicKey(self,id):
|
||
pass
|
||
|
||
def _genSystematicKey(self):
|
||
t = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890~!@#$%^&*'
|
||
kl = random.randint(10,15)
|
||
ky = []
|
||
klen = len(t) - 1
|
||
for k in range(kl):
|
||
i = random.randint(0,klen)
|
||
# print(k,klen,i)
|
||
ky.append(t[i])
|
||
return ''.join(ky)
|
||
|
||
def encode(self,text):
|
||
"""
|
||
return a json text
|
||
json ojbect have three addt:
|
||
k:encrypted rc4 key
|
||
s:signature
|
||
c:ciphertext encrypted by key
|
||
"""
|
||
d = {"id":self.myid,"data":text}
|
||
text = json.dumps(d)
|
||
sk = self._genSystematicKey()
|
||
rc4 = RC4(sk)
|
||
c = rc4.encode(text)
|
||
s = self.rsa.sign(self.mypri,sk)
|
||
if self.peerpub is None:
|
||
return None
|
||
k = self.rsa.encode(self.peerpub,sk)
|
||
d = {
|
||
'c':c,
|
||
'k':k,
|
||
's':s
|
||
}
|
||
return json.dumps(d)
|
||
|
||
def decode(self,body):
|
||
"""
|
||
cipher a json text
|
||
json ojbect have three addt:
|
||
k:encrypted rc4 key
|
||
s:signature
|
||
c:ciphertext encrypted by key
|
||
"""
|
||
d = json.loads(body)
|
||
signature = d['s']
|
||
sk = self.rsa.decode(self.mypri,d['k'])
|
||
# print('sk=',sk,'k=',d['k'],type(d['k']))
|
||
rc4 = RC4(sk)
|
||
t = rc4.decode(d['c'])
|
||
d = json.loads(t)
|
||
ret = d['data']
|
||
if self.peerpub is not None and not self.rsa.check_sign(self.peerpub,sk,signature):
|
||
return None
|
||
if self.peerpub is None:
|
||
peerpub = self.getPeerPublicKey(d['id'])
|
||
if peerpub is None:
|
||
return None
|
||
if not self.rsa.check_sign(peerpub,sk,signature):
|
||
return None
|
||
return ret
|
||
|
||
if __name__ == '__main__':
|
||
r = RSA()
|
||
mary_pri = r.create_privatekey()
|
||
mary_pub = r.create_publickey(mary_pri)
|
||
|
||
john_pri = r.create_privatekey()
|
||
john_pub = r.create_publickey(john_pri)
|
||
|
||
john_rp = RSAPeer(john_pri,mary_pub)
|
||
mary_rp = RSAPeer(mary_pri,john_pub)
|
||
txt = '''hello python 爱的实打实大师大师大师的发送到发送到而非个人格个二哥而而二哥而个人各位,UDP是一种无连接对等通信协议，没有服务器和客户端概念，通信的任何一方均可通过通信原语直接和其他方通信
|
||
|
||
HOME FAQ DOCS DOWNLOAD
|
||
|
||
|
||
index
|
||
next |
|
||
previous |
|
||
Twisted 18.9.0 documentation » Twisted Names (DNS) » Developer Guides » '''
|
||
c = john_rp.encode(txt)
|
||
newtxt = mary_rp.decode(c)
|
||
print(txt)
|
||
print('<===>')
|
||
print(c)
|
||
print('<===>')
|
||
print(newtxt)
|