Dirty Document

The Limitation of Classical Encryption Algorithms

The availability of computer resources is not a barrier for breaking messages encrypted using classical algorithms. Nowadays, brute-forcing long passwords and complicated encryption keys is as easy as breaking short passwords just few years ago, taking in consideration the new technologies of using distributed calculation and brute-forcing as grid calculation techniques.

Intruders who intercept a communication channel can tell whether the transmitted information is encrypted or not, so they either try to decrypt it, or, if they're unable to do that, break down the communication channel.

Dirty Document is a principle, a technique and a technology that allows you to overcome enryption limitations and take it one step further.

Dirty Document Principles

The main principle of Dirty Document is not only to encrypt transmitted information, but also to hide the existence of this information in any type of multimedia (images, audio, video). In this case, an intruder will not be able to even retrieve the encrypted information, simply because he wouldn't know it's there.

Using Dirty Document, you'll be able to secure communication and increase the efficiency of communication channels which are designed to carry multimedia signals, both analog and digital. For example, while broadcasting TV channel over satellite connection or even over the Internet, people will be able to send hidden encrypted information without consuming more bandwidth, and without modifying the quality and the size of multimedia channel.

Analog and Digital Samples

Dirty Document is robust against noise and attacks, even against Analog/Digital convertors. The the safety of hidden encrypted message is guaranteed, even after applying many types of noise, distoration or other attacks to multimedia channel.

For example, hiding a message in digital image, and then printing it out will maintain the message and the ability of detect this message from the digital image or the printed image.

Dirty Document Application