twisted.conch.ssh.transport : API documentation

The lowest level SSH protocol. This handles the key negotiation, the encryption and the compression. The transport layer is described in RFC 4253.

Maintainer: Paul Swartz

Class	SSHTransportBase	Protocol supporting basic SSH functionality: sending/receiving packets and message dispatch. To connect to or run a server, you must use SSHClientTransport or SSHServerTransport.
Class	SSHServerTransport	SSHServerTransport implements the server side of the SSH protocol.
Class	SSHClientTransport	SSHClientTransport implements the client side of the SSH protocol.
Class	SSHCiphers	SSHCiphers represents all the encryption operations that need to occur to encrypt and authenticate the SSH connection.
Function	_getRandomNumber	Generate a random number in the range [0, 2 ** bits).
Function	_generateX	Generate a new value for the private key x.
Class	_MACParams	`_MACParams` represents the parameters necessary to compute SSH MAC (Message Authenticate Codes).
Class	_DummyCipher	A cipher for the none encryption method.
Class	_Counter	Stateful counter which returns results packed in a byte string

def _getRandomNumber(random, bits): (source)

Generate a random number in the range [0, 2 ** bits).

Parameters	bits	The number of bits in the result. (type: `int`)
Returns	The newly generated random number. (type: `int` or `long`)
Raises	ValueError	if `bits` is not a multiple of 8.

def _generateX(random, bits): (source)

Generate a new value for the private key x.

From RFC 2631, section 2.2:

   X9.42 requires that the private key x be in the interval
   [2, (q - 2)].  x should be randomly generated in this interval.

twisted.conch.ssh.transport module documentation