twisted.conch.ssh.transport.SSHServerTransport : API documentation

Instance Variable	isClient	since we are never the client, this is always False.
Instance Variable	ignoreNextPacket	if True, ignore the next key exchange packet. This is set when the client sends a guessed key exchange packet but with an incorrect guess.
Instance Variable	dhGexRequest	the KEX_DH_GEX_REQUEST(_OLD) that the client sent. The key generation needs this to be stored.
Instance Variable	g	the Diffie-Hellman group generator.
Instance Variable	p	the Diffie-Hellman group prime.
Method	ssh_KEXINIT	No summary
Method	ssh_KEX_DH_GEX_REQUEST_OLD	No summary
Method	ssh_KEX_DH_GEX_REQUEST	No summary
Method	ssh_KEX_DH_GEX_INIT	Called when we get a MSG_KEX_DH_GEX_INIT message. Payload:: integer e (client DH public key)
Method	ssh_NEWKEYS	Called when we get a MSG_NEWKEYS message. No payload. When we get this, the keys have been set on both sides, and we start using them to encrypt and authenticate the connection.
Method	ssh_SERVICE_REQUEST	Called when we get a MSG_SERVICE_REQUEST message. Payload:: string serviceName
Method	_ssh_KEXDH_INIT	Called to handle the beginning of a non-group key exchange.

Inherited from BaseProtocol (via SSHTransportBase, Protocol):

Method

makeConnection

Make a connection to a transport and a server.

Inherited from BaseProtocol (via SSHTransportBase, Protocol):

Method

makeConnection

Make a connection to a transport and a server.

Inherited from BaseProtocol (via SSHTransportBase, Protocol):

Method

makeConnection

Make a connection to a transport and a server.

isClient =

since we are never the client, this is always False.

ignoreNextPacket =

if True, ignore the next key exchange packet. This is set when the client sends a guessed key exchange packet but with an incorrect guess.

dhGexRequest =

the KEX_DH_GEX_REQUEST(_OLD) that the client sent. The key generation needs this to be stored.

g =

the Diffie-Hellman group generator.

p =

the Diffie-Hellman group prime.

def ssh_KEXINIT(self, packet): (source)

overrides twisted.conch.ssh.transport.SSHTransportBase.ssh_KEXINIT

Called when we receive a MSG_KEXINIT message. For a description of the packet, see SSHTransportBase.ssh_KEXINIT(). Additionally, this method checks if a guessed key exchange packet was sent. If it was sent, and it guessed incorrectly, the next key exchange packet MUST be ignored.

def _ssh_KEXDH_INIT(self, packet): (source)

Called to handle the beginning of a non-group key exchange.

Unlike other message types, this is not dispatched automatically. It is called from ssh_KEX_DH_GEX_REQUEST_OLD because an extra check is required to determine if this is really a KEXDH_INIT message or if it is a KEX_DH_GEX_REQUEST_OLD message.

The KEXDH_INIT payload:

       integer e (the client's Diffie-Hellman public key)

We send the KEXDH_REPLY with our host key and signature.

def ssh_KEX_DH_GEX_REQUEST_OLD(self, packet): (source)

This represents different key exchange methods that share the same integer value. If the message is determined to be a KEXDH_INIT, _ssh_KEXDH_INIT is called to handle it. Otherwise, for KEX_DH_GEX_REQUEST_OLD payload:

       integer ideal (ideal size for the Diffie-Hellman prime)

   We send the KEX_DH_GEX_GROUP message with the group that is
   closest in size to ideal.

If we were told to ignore the next key exchange packet by ssh_KEXINIT, drop it on the floor and return.

def ssh_KEX_DH_GEX_REQUEST(self, packet): (source)

Called when we receive a MSG_KEX_DH_GEX_REQUEST message. Payload:

   integer minimum
   integer ideal
   integer maximum

The client is asking for a Diffie-Hellman group between minimum and maximum size, and close to ideal if possible. We reply with a MSG_KEX_DH_GEX_GROUP message.

If we were told to ignore the next key exchange packet by ssh_KEXINIT, drop it on the floor and return.

def ssh_KEX_DH_GEX_INIT(self, packet): (source)

Called when we get a MSG_KEX_DH_GEX_INIT message. Payload:

   integer e (client DH public key)

We send the MSG_KEX_DH_GEX_REPLY message with our host key and signature.

def ssh_NEWKEYS(self, packet): (source)

Called when we get a MSG_NEWKEYS message. No payload. When we get this, the keys have been set on both sides, and we start using them to encrypt and authenticate the connection.

def ssh_SERVICE_REQUEST(self, packet): (source)

Called when we get a MSG_SERVICE_REQUEST message. Payload:

   string serviceName

The client has requested a service. If we can start the service, start it; otherwise, disconnect with DISCONNECT_SERVICE_NOT_AVAILABLE.

twisted.conch.ssh.transport.SSHServerTransport(SSHTransportBase) class documentation

`twisted.conch.ssh.transport.SSHServerTransport(SSHTransportBase)` class documentation