Package tlslite :: Module extensions :: Class PaddingExtension

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type PaddingExtension

ClientHello message padding with a desired size.

Can be used to pad ClientHello messages to a desired size in order to avoid implementation bugs caused by certain ClientHello sizes.

See RFC7685.

Instance Methods

__init__(self)
Create instance of class.

source code

TLSExtension

create(self, size)
Set the padding size and create null byte padding of defined size.

source code

TLSExtension

parse(self, p)
Deserialise extension from on the wire data.

source code

Inherited from TLSExtension: __eq__, __repr__, write

Inherited from TLSExtension (private): _newCreate, _oldCreate

Static Methods

Inherited from TLSExtension (private): _parseExt

Class Variables

Inherited from TLSExtension (private): _serverExtensions, _universalExtensions

Instance Variables

Inherited from TLSExtension: extType, serverType

Properties

bytearray

extData
a byte array containing the value of the extension as to be written on the wire

Method Details

init(self)
(Constructor)

Create instance of class.

Parameters:

server - whether to select ClientHello or ServerHello version for parsing
extType - type of extension encoded as an integer, to be used by subclasses

Overrides: TLSExtension.__init__

create(self, size)

Set the padding size and create null byte padding of defined size.

Parameters:

size (int) - required padding size in bytes

Returns: TLSExtension

Overrides: TLSExtension.create

parse(self, p)

Deserialise extension from on the wire data.

Parameters:

p (tlslite.util.codec.Parser) - data to be parsed

Returns: TLSExtension

Raises:

SyntaxError - when the size of the passed element doesn't match the internal representation

Overrides: TLSExtension.parse

Property Details

extData

a byte array containing the value of the extension as to be written on the wire

Type:: bytearray