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#!/usr/bin/python
# Copyright (C) 2003-2004 Robey Pointer <robey@lag.net>
#
# This file is part of paramiko.
#
# Paramiko is free software; you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation; either version 2.1 of the License, or (at your option)
# any later version.
#
# Paramiko is distrubuted in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with Paramiko; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
"""
Some unit tests for the key exchange protocols.
"""
import unittest
import paramiko.util
from paramiko.kex_group1 import KexGroup1
from paramiko.kex_gex import KexGex
from paramiko import Message
class FakeRandpool (object):
def stir(self):
pass
def get_bytes(self, n):
return chr(0xcc) * n
class FakeKey (object):
def __str__(self):
return 'fake-key'
def sign_ssh_data(self, randpool, H):
return 'fake-sig'
class FakeModulusPack (object):
P = 0xFFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFFL
G = 2
def get_modulus(self, min, ask, max):
return self.G, self.P
class FakeTransport (object):
randpool = FakeRandpool()
local_version = 'SSH-2.0-paramiko_1.0'
remote_version = 'SSH-2.0-lame'
local_kex_init = 'local-kex-init'
remote_kex_init = 'remote-kex-init'
def _send_message(self, m):
self._message = m
def _expect_packet(self, t):
self._expect = t
def _set_K_H(self, K, H):
self._K = K
self._H = H
def _verify_key(self, host_key, sig):
self._verify = (host_key, sig)
def _activate_outbound(self):
self._activated = True
def _log(self, level, s):
pass
def get_server_key(self):
return FakeKey()
def _get_modulus_pack(self):
return FakeModulusPack()
class KexTest (unittest.TestCase):
K = 14730343317708716439807310032871972459448364195094179797249681733965528989482751523943515690110179031004049109375612685505881911274101441415545039654102474376472240501616988799699744135291070488314748284283496055223852115360852283821334858541043710301057312858051901453919067023103730011648890038847384890504L
def setUp(self):
pass
def tearDown(self):
pass
def test_1_group1_client(self):
transport = FakeTransport()
transport.server_mode = False
kex = KexGroup1(transport)
kex.start_kex()
x = '1E000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D4'
self.assertEquals(x, paramiko.util.hexify(str(transport._message)))
self.assertEquals(paramiko.kex_group1._MSG_KEXDH_REPLY, transport._expect)
# fake "reply"
msg = Message()
msg.add_string('fake-host-key')
msg.add_mpint(69)
msg.add_string('fake-sig')
kex.parse_next(paramiko.kex_group1._MSG_KEXDH_REPLY, msg)
H = '0C39EDB98E9853B85D4527DA940EB03301925329'
self.assertEquals(self.K, transport._K)
self.assertEquals(H, paramiko.util.hexify(transport._H))
self.assertEquals(('fake-host-key', 'fake-sig'), transport._verify)
self.assert_(transport._activated)
def test_2_group1_server(self):
transport = FakeTransport()
transport.server_mode = True
kex = KexGroup1(transport)
kex.start_kex()
self.assertEquals(paramiko.kex_group1._MSG_KEXDH_INIT, transport._expect)
msg = Message()
msg.add_mpint(69)
kex.parse_next(paramiko.kex_group1._MSG_KEXDH_INIT, msg)
H = '77FE6F0094FB8DB3270106A77F88D66E09EEF8AF'
x = '1F0000000866616B652D6B6579000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D40000000866616B652D736967'
self.assertEquals(self.K, transport._K)
self.assertEquals(H, paramiko.util.hexify(transport._H))
self.assertEquals(x, paramiko.util.hexify(str(transport._message)))
self.assert_(transport._activated)
def test_3_gex_client(self):
transport = FakeTransport()
transport.server_mode = False
kex = KexGex(transport)
kex.start_kex()
x = '22000004000000080000002000'
self.assertEquals(x, paramiko.util.hexify(str(transport._message)))
self.assertEquals(paramiko.kex_gex._MSG_KEXDH_GEX_GROUP, transport._expect)
msg = Message()
msg.add_mpint(FakeModulusPack.P)
msg.add_mpint(FakeModulusPack.G)
kex.parse_next(paramiko.kex_gex._MSG_KEXDH_GEX_GROUP, msg)
x = '20000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D4'
self.assertEquals(x, paramiko.util.hexify(str(transport._message)))
self.assertEquals(paramiko.kex_gex._MSG_KEXDH_GEX_REPLY, transport._expect)
msg = Message()
msg.add_string('fake-host-key')
msg.add_mpint(69)
msg.add_string('fake-sig')
kex.parse_next(paramiko.kex_gex._MSG_KEXDH_GEX_REPLY, msg)
H = 'A265563F2FA87F1A89BF007EE90D58BE2E4A4BD0'
self.assertEquals(self.K, transport._K)
self.assertEquals(H, paramiko.util.hexify(transport._H))
self.assertEquals(('fake-host-key', 'fake-sig'), transport._verify)
self.assert_(transport._activated)
def test_4_gex_server(self):
transport = FakeTransport()
transport.server_mode = True
kex = KexGex(transport)
kex.start_kex()
self.assertEquals(paramiko.kex_gex._MSG_KEXDH_GEX_REQUEST, transport._expect)
msg = Message()
msg.add_int(1024)
msg.add_int(2048)
msg.add_int(4096)
kex.parse_next(paramiko.kex_gex._MSG_KEXDH_GEX_REQUEST, msg)
x = '1F0000008100FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF0000000102'
self.assertEquals(x, paramiko.util.hexify(str(transport._message)))
self.assertEquals(paramiko.kex_gex._MSG_KEXDH_GEX_INIT, transport._expect)
msg = Message()
msg.add_mpint(12345)
kex.parse_next(paramiko.kex_gex._MSG_KEXDH_GEX_INIT, msg)
K = 67592995013596137876033460028393339951879041140378510871612128162185209509220726296697886624612526735888348020498716482757677848959420073720160491114319163078862905400020959196386947926388406687288901564192071077389283980347784184487280885335302632305026248574716290537036069329724382811853044654824945750581L
H = 'CE754197C21BF3452863B4F44D0B3951F12516EF'
x = '210000000866616B652D6B6579000000807E2DDB1743F3487D6545F04F1C8476092FB912B013626AB5BCEB764257D88BBA64243B9F348DF7B41B8C814A995E00299913503456983FFB9178D3CD79EB6D55522418A8ABF65375872E55938AB99A84A0B5FC8A1ECC66A7C3766E7E0F80B7CE2C9225FC2DD683F4764244B72963BBB383F529DCF0C5D17740B8A2ADBE9208D40000000866616B652D736967'
self.assertEquals(K, transport._K)
self.assertEquals(H, paramiko.util.hexify(transport._H))
self.assertEquals(x, paramiko.util.hexify(str(transport._message)))
self.assert_(transport._activated)
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