Cryptographic protection of TCP Streams (tcpcrypt)
draft-bittau-tcp-crypt-02

The information below is for an old version of the document
Document Type Expired Internet-Draft (individual in tsv area)
Last updated 2012-08-31 (latest revision 2012-02-28)
Stream IETF
Intended RFC status (None)
Formats
Expired & archived
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Stream WG state (None)
Document shepherd None
IESG IESG state Expired (IESG: Dead)
Telechat date
Responsible AD Wesley Eddy
Send notices to draft-bittau-tcp-crypt@tools.ietf.org, bittau@cs.stanford.edu, dabo@cs.stanford.edu, mike@shiftleft.org, m.handley@cs.ucl.ac.uk, dm@uun.org, sqs@cs.stanford.edu, draft-bittau-tcp-crypt@tools.ietf.org

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at
https://www.ietf.org/archive/id/draft-bittau-tcp-crypt-02.txt

Abstract

This document presents tcpcrypt, a TCP extension for cryptographically protecting TCP segments. Tcpcrypt maintains the confidentiality of data transmitted in TCP segments against a passive eavesdropper. It can be used to protect already established TCP connections against denial-of-service attacks involving injection of forged RST segments or desynchronizing of sequence numbers. Finally, applications that perform authentication can obtain end-to-end confidentiality and integrity guarantees by tying authentication to tcpcrypt Session ID values. The extension defines two new TCP options, CRYPT and MAC, which are designed to provide compatible interworking with TCPs that do not implement tcpcrypt. The CRYPT option allows hosts to negotiate the use of tcpcrypt and establish shared secret encryption keys. The MAC option carries a message authentication code with which hosts can verify the integrity of transmitted TCP segments. Tcpcrypt is designed to require relatively low overhead, particularly at servers, so as to be useful even in the case of servers accepting many TCP connections per second.

Authors

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