74 lines
2.4 KiB
Python
74 lines
2.4 KiB
Python
# -*- coding: utf-8 -*-
|
|
import mtproto
|
|
import os, io
|
|
import prime
|
|
import configparser
|
|
from Crypto.Hash import SHA
|
|
from Crypto.PublicKey import RSA
|
|
|
|
config = configparser.ConfigParser()
|
|
config.read('credentials')
|
|
ip = config['App data']['ip_address']
|
|
port = config['App data'].getint('port')
|
|
|
|
Session = mtproto.Session(ip, port)
|
|
client_nonce = os.urandom(16)
|
|
x = Session.method_call('req_pq', nonce=client_nonce)
|
|
|
|
server_nonce = x['server_nonce']
|
|
public_key_fingerprint = x['server_public_key_fingerprints'][0]
|
|
PQ_bytes = x['pq']
|
|
|
|
PQ = int.from_bytes(PQ_bytes, 'big')
|
|
[p, q] = prime.primefactors(PQ)
|
|
if p > q: (p, q) = (q, p)
|
|
assert p*q == PQ and p < q
|
|
|
|
print("PQ = %d\np = %d, q = %d" % (PQ, p, q))
|
|
|
|
|
|
P_bytes = int.to_bytes(p, p.bit_length()//8+1, 'big')
|
|
Q_bytes = int.to_bytes(q, q.bit_length()//8+1, 'big')
|
|
|
|
f = open('rsa.pub', 'r')
|
|
key = RSA.importKey(f.read())
|
|
|
|
z = io.BytesIO()
|
|
|
|
new_nonce = os.urandom(32)
|
|
|
|
mtproto.serialize_obj(z, 'p_q_inner_data',
|
|
pq=PQ_bytes,
|
|
p=P_bytes,
|
|
q=Q_bytes,
|
|
nonce=client_nonce,
|
|
server_nonce=server_nonce,
|
|
new_nonce=new_nonce)
|
|
data = z.getvalue()
|
|
|
|
sha_digest = SHA.new(data).digest()
|
|
random_bytes = os.urandom(255-len(data)-len(sha_digest))
|
|
to_encrypt = sha_digest + data + random_bytes
|
|
encrypted_data = key.encrypt(to_encrypt, 0)[0]
|
|
|
|
z = Session.method_call('req_DH_params',
|
|
nonce=client_nonce,
|
|
server_nonce=server_nonce,
|
|
p=P_bytes,
|
|
q=Q_bytes,
|
|
public_key_fingerprint=public_key_fingerprint,
|
|
encrypted_data=encrypted_data)
|
|
|
|
print(z)
|
|
|
|
# # used for serialization and SHA testing (passed)
|
|
# z = io.BytesIO()
|
|
# mtproto.serialize_obj(z, 'p_q_inner_data',
|
|
# pq=b"\x17\xED\x48\x94\x1A\x08\xF9\x81",
|
|
# p=b"\x49\x4C\x55\x3B",
|
|
# q=b"\x53\x91\x10\x73",
|
|
# nonce=b"\x3E\x05\x49\x82\x8C\xCA\x27\xE9\x66\xB3\x01\xA4\x8F\xEC\xE2\xFC",
|
|
# server_nonce=b"\xA5\xCF\x4D\x33\xF4\xA1\x1E\xA8\x77\xBA\x4A\xA5\x73\x90\x73\x30",
|
|
# new_nonce=b"\x31\x1C\x85\xDB\x23\x4A\xA2\x64\x0A\xFC\x4A\x76\xA7\x35\xCF\x5B\x1F\x0F\xD6\x8B\xD1\x7F\xA1\x81\xE1\x22\x9A\xD8\x67\xCC\x02\x4D")
|
|
# x=z.getvalue()
|
|
# print(SHA.new(x).hexdigest()) |