Data Compression


Criteria

Survey Formats

Basics

Compression Methods

Data Formats

Files

BZIP2

GZIP

ZIP

Specification

Characteristics

Compression

File Structure

Security Features

Platforms

Applications

Audio Data

Image Data

Video Data


Glossary

Index


Download


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Security Features


To ensure data integrity only the checksum procedure CRC-32 is provided. There is no further algorithm specified to add redundancy intended for increasing error tolerance.


To protect a ZIP file from unauthorized access data could be encrypted. The latest encryption features were added to the specification at version 6.2. Simple encryption methods were already part of former versions, but are not providing a higher security level.


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