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ZLIB Compressed Data Format Specification version 3.3 (RFC1950)

IP.com Disclosure Number: IPCOM000004248D
Original Publication Date: 1996-May-01
Included in the Prior Art Database: 2019-Feb-12
Document File: 11 page(s) / 13K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

P. Deutsch: AUTHOR [+1]

Related Documents

10.17487/RFC1950: DOI

Abstract

This specification defines a lossless compressed data format. This memo provides information for the Internet community. This memo does not specify an Internet standard of any kind.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 17% of the total text.

Network Working Group P. Deutsch Request for Comments: 1950 Aladdin Enterprises Category: Informational J-L. Gailly Info-ZIP May 1996

ZLIB Compressed Data Format Specification version 3.3

Status of This Memo

This memo provides information for the Internet community. This memo does not specify an Internet standard of any kind. Distribution of this memo is unlimited.

IESG Note:

The IESG takes no position on the validity of any Intellectual Property Rights statements contained in this document.

Notices

Copyright (c) 1996 L. Peter Deutsch and Jean-Loup Gailly

Permission is granted to copy and distribute this document for any purpose and without charge, including translations into other languages and incorporation into compilations, provided that the copyright notice and this notice are preserved, and that any substantive changes or deletions from the original are clearly marked.

A pointer to the latest version of this and related documentation in HTML format can be found at the URL <ftp://ftp.uu.net/graphics/png/documents/zlib/zdoc-index.html>.

Abstract

This specification defines a lossless compressed data format. The data can be produced or consumed, even for an arbitrarily long sequentially presented input data stream, using only an a priori bounded amount of intermediate storage. The format presently uses the DEFLATE compression method but can be easily extended to use other compression methods. It can be implemented readily in a manner not covered by patents. This specification also defines the ADLER-32 checksum (an extension and improvement of the Fletcher checksum), used for detection of data corruption, and provides an algorithm for computing it.

Deutsch & Gailly Informational [Page 1]

RFC 1950 ZLIB Compressed Data Format Specification May 1996

Table of Contents

1. Introduction ................................................... 2 1.1. Purpose ................................................... 2 1.2. Intended audience ......................................... 3 1.3. Scope ..................................................... 3 1.4. Compliance ................................................ 3 1.5. Definitions of terms and conventions used ................ 3 1.6. Changes from previous versions ............................ 3 2. Detailed specification ......................................... 3 2.1. Overall conventions ....................................... 3 2.2. Data format ............................................... 4 2.3. Compliance ................................................ 7 3. References ..................................................... 7 4. Source code .................................................... 8 5. Security Considerations ........................................ 8 6. Acknowledgements ............................................... 8 7. Authors’ Addresses ............................................. 8 8. Appendix: Rationale ............................................ 9 9. Appendix: Sample code ................

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