The ESP CAST5-128-CBC Transform

Document Type Expired Internet-Draft (ipsec WG)
Authors William Simpson  , Perry Metzger 
Last updated 1997-07-30
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes the CAST5-128-CBC block cipher transform interface used with the IP Encapsulating Security Payload (ESP). It provides a full-sized 128-bit key, with a more secure derived ini- tialization variable, and a more efficient smaller datagram size.


William Simpson (
Perry Metzger (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)