CRC: A Paper On CRCs

This CRC web was created because of the popularity of a paper on CRC algorithms written by Ross Williams and posted to some Internet newsgroups on 19 August 1993. This paper is available here:

Here is the title and abstract of the paper:

A Painless Guide to CRC Error Detection Algorithms

This document explains CRCs (Cyclic Redundancy Codes) and their table-driven implementations in full, precise detail. Much of the literature on CRCs, and in particular on their table-driven implementations, is a little obscure. This document is an attempt to provide a clear and simple no-nonsense explanation of CRCs and to absolutely nail down every detail of the operation of their high-speed implementations. In addition to this, this document presents a parameterized model CRC algorithm called the "Rocksoft^tm Model CRC Algorithm". The model algorithm can be parameterized to behave like most of the CRC implementations around, and so acts as a good reference for describing particular algorithms. A low-speed implementation of the model CRC algorithm is provided in the C programming language. Lastly there is a section giving two forms of high-speed table driven implementations, and providing a program that generates CRC lookup tables.
* * Webmaster:
Linktome: Click here to find out how to link your pages to this web.
Copyright: Copyright © Ross N. Williams 1996. All rights reserved.