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Stream Control Transmission Protocol (SCTP) Checksum Change (RFC3309)

IP.com Disclosure Number: IPCOM000009934D
Original Publication Date: 2002-Sep-01
Included in the Prior Art Database: 2002-Oct-01
Document File: 18 page(s) / 35K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J. Stone: AUTHOR [+3]

Abstract

Stream Control Transmission Protocol (SCTP) currently uses an Adler- 32 checksum. For small packets Adler-32 provides weak detection of errors. This document changes that checksum and updates SCTP to use a 32 bit CRC checksum.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 8% of the total text.

Network Working Group� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � J. Stone

Request for Comments: 3309� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � Stanford

Updates: 2960� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � R. Stewart

Category: Standards� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � Cisco Systems

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � D. Otis

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � SANlight

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � September 2002

� � � � � Stream Control Transmission Protocol (SCTP) Checksum Change

Status of this Memo

� � This document specifies an Internet standards track protocol for the

� � Internet community, and requests discussion and suggestions for

� � improvements.� Please refer to the current edition of the "Internet

� � Official Protocol Standards" (STD 1) for the standardization state

� � and status of this protocol.� Distribution of this memo is unlimited.

Copyright Notice

� � Copyright (C) The Internet Society (2002).� All Rights Reserved.

Abstract

� � Stream Control Transmission Protocol (SCTP) currently uses an Adler-

� � 32 checksum.� For small packets Adler-32 provides weak detection of

� � errors.� This document changes that checksum and updates SCTP to use

� � a 32 bit CRC checksum.

Table of Contents

� � 1 Introduction ...................................................� 2

� � 2 Checksum Procedures ............................................� 3

� � 3 Security Considerations.........................................� 6

� � 4 IANA Considerations.............................................� 6

� � 5 Acknowledgments ................................................� 6

� � 6 References .....................................................� 7

� � Appendix .........................................................� 9

� � Authors' Addresses ............................................... 16

� � Full Copyright Statement ......................................... 17

Stone, et. al.� � � � � � � � � � � � � Standards Track� � � � � � � � � � � � � � � � � � � � [Page 1]

RFC 3309� � � � � � � � � � � � � � � � � SCTP Checksum Change� � � � � � � � � � � September 2002

1 Introduction

� � A fundamental weakness has been detected in SCTP's current Adler-32

� � checksum algorithm [STONE].� This document updates and replaces the

� � Adler-32 checksum definition in [RFC 2960].� Note that there is no

� � graceful transition mechanism for migrating to the new checksum.

� � Implementations are expected to immediately switch to the new

� � algorithm; use of the old algorithm is deprecated.

� � One requirement of an effective checksum is...