9814

Fingerprints of Electronic Files: Performance Tests

Information stored in digital documents can be lost during transmission, migration, or when the storage medium breaks down or is corrupted. To ensure that the data has not changed, you can perform a digital fingerprint procedure. Up to a small margin of error, a digital fingerprint is unique to each document and therefore verifies the integrity (unaltered state) of the document.
This Demonstration presents some results of using modified cellular automata to generate fingerprints of electronic documents based on their contents. It uses the binary data of the document as the initial condition. The result of the computation is a fingerprint of the document, which can have 128, 256, or 512 bits. This Demonstration evaluates the performance of different compression techniques on different file sizes and of generating different hash sizes compared with common hash algorithms. The timing axis on the graphic is plotted with a logarithmic scale.
Each test measures the time to process each compression technique, which is compared with common hash functions (MD5, SHA), with different hash sizes (128, 256 and 512 bits).

SNAPSHOTS

  • [Snapshot]
  • [Snapshot]
  • [Snapshot]

DETAILS

At every step, a cellular automaton rule is applied to the current state, and cells are dropped according to the compression technique being used.
This Demonstration presents some results of precision tests on research about finding an NKS way to generate fingerprints of electronic documents based on their contents, using the binary data of a document with an initial state and the result of computation as a fingerprint of this document.
More information about Document Management Systems: Wikipedia.
More information about Fingerprint Algorithms: Wikipedia.
This Demonstration was created during the New Kind of Science Summer School 2008 in Burlington, Vermont.
    • Share:

Embed Interactive Demonstration New!

Just copy and paste this snippet of JavaScript code into your website or blog to put the live Demonstration on your site. More details »

Files require Wolfram CDF Player or Mathematica.









 
RELATED RESOURCES
Mathematica »
The #1 tool for creating Demonstrations
and anything technical.
Wolfram|Alpha »
Explore anything with the first
computational knowledge engine.
MathWorld »
The web's most extensive
mathematics resource.
Course Assistant Apps »
An app for every course—
right in the palm of your hand.
Wolfram Blog »
Read our views on math,
science, and technology.
Computable Document Format »
The format that makes Demonstrations
(and any information) easy to share and
interact with.
STEM Initiative »
Programs & resources for
educators, schools & students.
Computerbasedmath.org »
Join the initiative for modernizing
math education.
Step-by-step Solutions »
Walk through homework problems one step at a time, with hints to help along the way.
Wolfram Problem Generator »
Unlimited random practice problems and answers with built-in Step-by-step solutions. Practice online or make a printable study sheet.
Wolfram Language »
Knowledge-based programming for everyone.
Powered by Wolfram Mathematica © 2014 Wolfram Demonstrations Project & Contributors  |  Terms of Use  |  Privacy Policy  |  RSS Give us your feedback
Note: To run this Demonstration you need Mathematica 7+ or the free Mathematica Player 7EX
Download or upgrade to Mathematica Player 7EX
I already have Mathematica Player or Mathematica 7+