Python Message.add_mpint方法代码示例

# 需要导入模块: from message import Message [as 别名]
# 或者: from message.Message import add_mpint [as 别名]
 def _parse_kexdh_gex_request(self, m):
     minbits = m.get_int()
     preferredbits = m.get_int()
     maxbits = m.get_int()
     # smoosh the user's preferred size into our own limits
     if preferredbits > self.max_bits:
         preferredbits = self.max_bits
     if preferredbits < self.min_bits:
         preferredbits = self.min_bits
     # fix min/max if they're inconsistent.  technically, we could just pout
     # and hang up, but there's no harm in giving them the benefit of the
     # doubt and just picking a bitsize for them.
     if minbits > preferredbits:
         minbits = preferredbits
     if maxbits < preferredbits:
         maxbits = preferredbits
     # now save a copy
     self.min_bits = minbits
     self.preferred_bits = preferredbits
     self.max_bits = maxbits
     # generate prime
     pack = self.transport._get_modulus_pack()
     if pack is None:
         raise SSHException('Can\'t do server-side gex with no modulus pack')
     self.transport._log(DEBUG, 'Picking p (%d <= %d <= %d bits)' % (minbits, preferredbits, maxbits))
     self.g, self.p = pack.get_modulus(minbits, preferredbits, maxbits)
     m = Message()
     m.add_byte(chr(_MSG_KEXDH_GEX_GROUP))
     m.add_mpint(self.p)
     m.add_mpint(self.g)
     self.transport._send_message(m)
     self.transport._expect_packet(_MSG_KEXDH_GEX_INIT)

# 需要导入模块: from message import Message [as 别名]
# 或者: from message.Message import add_mpint [as 别名]
 def __str__(self):
     m = Message()
     m.add_string('ssh-dss')
     m.add_mpint(self.p)
     m.add_mpint(self.q)
     m.add_mpint(self.g)
     m.add_mpint(self.y)
     return str(m)

# 需要导入模块: from message import Message [as 别名]
# 或者: from message.Message import add_mpint [as 别名]
 def _parse_kexdh_gex_init(self, m):
     self.e = m.get_mpint()
     if (self.e < 1) or (self.e > self.p - 1):
         raise SSHException('Client kex "e" is out of range')
     self._generate_x()
     self.f = pow(self.g, self.x, self.p)
     K = pow(self.e, self.x, self.p)
     key = str(self.transport.get_server_key())
     # okay, build up the hash H of (V_C || V_S || I_C || I_S || K_S || min || n || max || p || g || e || f || K)
     hm = Message()
     hm.add(self.transport.remote_version, self.transport.local_version,
            self.transport.remote_kex_init, self.transport.local_kex_init,
            key)
     if not self.old_style:
         hm.add_int(self.min_bits)
     hm.add_int(self.preferred_bits)
     if not self.old_style:
         hm.add_int(self.max_bits)
     hm.add_mpint(self.p)
     hm.add_mpint(self.g)
     hm.add_mpint(self.e)
     hm.add_mpint(self.f)
     hm.add_mpint(K)
     H = SHA.new(str(hm)).digest()
     self.transport._set_K_H(K, H)
     # sign it
     sig = self.transport.get_server_key().sign_ssh_data(self.transport.rng, H)
     # send reply
     m = Message()
     m.add_byte(chr(_MSG_KEXDH_GEX_REPLY))
     m.add_string(key)
     m.add_mpint(self.f)
     m.add_string(str(sig))
     self.transport._send_message(m)
     self.transport._activate_outbound()

# 需要导入模块: from message import Message [as 别名]
# 或者: from message.Message import add_mpint [as 别名]
 def start_kex(self):
     self._generate_x()
     if self.transport.server_mode:
         # compute f = g^x mod p, but don't send it yet
         self.f = pow(G, self.x, P)
         self.transport._expect_packet(_MSG_KEXDH_INIT)
         return
     # compute e = g^x mod p (where g=2), and send it
     self.e = pow(G, self.x, P)
     m = Message()
     m.add_byte(chr(_MSG_KEXDH_INIT))
     m.add_mpint(self.e)
     self.transport._send_message(m)
     self.transport._expect_packet(_MSG_KEXDH_REPLY)

# 需要导入模块: from message import Message [as 别名]
# 或者: from message.Message import add_mpint [as 别名]
 def _parse_kexdh_gex_group(self, m):
     self.p = m.get_mpint()
     self.g = m.get_mpint()
     # reject if p's bit length < 1024 or > 8192
     bitlen = util.bit_length(self.p)
     if (bitlen < 1024) or (bitlen > 8192):
         raise SSHException('Server-generated gex p (don\'t ask) is out of range (%d bits)' % bitlen)
     self.transport._log(DEBUG, 'Got server p (%d bits)' % bitlen)
     self._generate_x()
     # now compute e = g^x mod p
     self.e = pow(self.g, self.x, self.p)
     m = Message()
     m.add_byte(chr(_MSG_KEXDH_GEX_INIT))
     m.add_mpint(self.e)
     self.transport._send_message(m)
     self.transport._expect_packet(_MSG_KEXDH_GEX_REPLY)

# 需要导入模块: from message import Message [as 别名]
# 或者: from message.Message import add_mpint [as 别名]
 def _parse_kexdh_reply(self, m):
     # client mode
     host_key = m.get_string()
     self.f = m.get_mpint()
     if (self.f < 1) or (self.f > P - 1):
         raise SSHException('Server kex "f" is out of range')
     sig = m.get_string()
     K = pow(self.f, self.x, P)
     # okay, build up the hash H of (V_C || V_S || I_C || I_S || K_S || e || f || K)
     hm = Message()
     hm.add(self.transport.local_version, self.transport.remote_version,
            self.transport.local_kex_init, self.transport.remote_kex_init)
     hm.add_string(host_key)
     hm.add_mpint(self.e)
     hm.add_mpint(self.f)
     hm.add_mpint(K)
     self.transport._set_K_H(K, SHA.new(str(hm)).digest())
     self.transport._verify_key(host_key, sig)
     self.transport._activate_outbound()

# 需要导入模块: from message import Message [as 别名]
# 或者: from message.Message import add_mpint [as 别名]
 def _parse_kexdh_gex_request_old(self, m):
     # same as above, but without min_bits or max_bits (used by older clients like putty)
     self.preferred_bits = m.get_int()
     # smoosh the user's preferred size into our own limits
     if self.preferred_bits > self.max_bits:
         self.preferred_bits = self.max_bits
     if self.preferred_bits < self.min_bits:
         self.preferred_bits = self.min_bits
     # generate prime
     pack = self.transport._get_modulus_pack()
     if pack is None:
         raise SSHException('Can\'t do server-side gex with no modulus pack')
     self.transport._log(DEBUG, 'Picking p (~ %d bits)' % (self.preferred_bits,))
     self.g, self.p = pack.get_modulus(self.min_bits, self.preferred_bits, self.max_bits)
     m = Message()
     m.add_byte(chr(_MSG_KEXDH_GEX_GROUP))
     m.add_mpint(self.p)
     m.add_mpint(self.g)
     self.transport._send_message(m)
     self.transport._expect_packet(_MSG_KEXDH_GEX_INIT)
     self.old_style = True

# 需要导入模块: from message import Message [as 别名]
# 或者: from message.Message import add_mpint [as 别名]
 def _parse_kexdh_gex_reply(self, m):
     host_key = m.get_string()
     self.f = m.get_mpint()
     sig = m.get_string()
     if (self.f < 1) or (self.f > self.p - 1):
         raise SSHException('Server kex "f" is out of range')
     K = pow(self.f, self.x, self.p)
     # okay, build up the hash H of (V_C || V_S || I_C || I_S || K_S || min || n || max || p || g || e || f || K)
     hm = Message()
     hm.add(self.transport.local_version, self.transport.remote_version,
            self.transport.local_kex_init, self.transport.remote_kex_init,
            host_key)
     if not self.old_style:
         hm.add_int(self.min_bits)
     hm.add_int(self.preferred_bits)
     if not self.old_style:
         hm.add_int(self.max_bits)
     hm.add_mpint(self.p)
     hm.add_mpint(self.g)
     hm.add_mpint(self.e)
     hm.add_mpint(self.f)
     hm.add_mpint(K)
     self.transport._set_K_H(K, SHA.new(str(hm)).digest())
     self.transport._verify_key(host_key, sig)
     self.transport._activate_outbound()

# 需要导入模块: from message import Message [as 别名]
# 或者: from message.Message import add_mpint [as 别名]
 def _parse_kexdh_init(self, m):
     # server mode
     self.e = m.get_mpint()
     if (self.e < 1) or (self.e > P - 1):
         raise SSHException('Client kex "e" is out of range')
     K = pow(self.e, self.x, P)
     key = str(self.transport.get_server_key())
     # okay, build up the hash H of (V_C || V_S || I_C || I_S || K_S || e || f || K)
     hm = Message()
     hm.add(self.transport.remote_version, self.transport.local_version,
            self.transport.remote_kex_init, self.transport.local_kex_init)
     hm.add_string(key)
     hm.add_mpint(self.e)
     hm.add_mpint(self.f)
     hm.add_mpint(K)
     H = SHA.new(str(hm)).digest()
     self.transport._set_K_H(K, H)
     # sign it
     sig = self.transport.get_server_key().sign_ssh_data(self.transport.rng, H)
     # send reply
     m = Message()
     m.add_byte(chr(_MSG_KEXDH_REPLY))
     m.add_string(key)
     m.add_mpint(self.f)
     m.add_string(str(sig))
     self.transport._send_message(m)
     self.transport._activate_outbound()

# 需要导入模块: from message import Message [as 别名]
# 或者: from message.Message import add_mpint [as 别名]
 def __str__(self):
     m = Message()
     m.add_string('ssh-rsa')
     m.add_mpint(self.e)
     m.add_mpint(self.n)
     return str(m)