Saturday, January 29, 2011

libperseus 1.0.1 (python + java binding)

Hi !

We have updated libperseus library, and now you can use it with python (with ctypes) and java (with jni). The new stable version is now available.

So, if you would like to use Perseus technology, the first thing to do is to compile the library :
desnos@cvo:~/$ tar xvzf libperseus-1.0.1.tgz
desnos@cvo:~/$ cd libperseus-1.0.1
desnos@cvo:~/libperseus-1.0.1/$ make
To use Perseus with >= Python 2.5, you must have the shared library in your path and the perseus python module (see the "python" directory for examples) which encapsulate all stuff.

The first thing to do is to create a new Perseus object, with four float (0.0 to 1.0) numbers to generate noise (if you don't specify these numbers, the module will do it) :
from random import random
from perseus import Perseus

p = Perseus(aleas=[ random() for i in range(0,4) ])
and after you can code or decode your string with the code and decode methods of the Perseus object :
encoded_data = p.code( "CVO BLOGSPOT" )
decoded_data = p.decode( encoded_data )
About the java binding (see the "java" directory for examples) , we have written a class to use it more easily. But the first thing to do before is to compile it (you must edit the Makefile to setup the jni headers of your java installation : JAVA_INCLUDE) :
desnos@cvo:~/libperseus-1.0.1/java/$ make
Next you can create a Perseus object (as in the Python module, you can specify or not the noise numbers) into a new class file :
Perseus p = new Perseus();
And you can use Code and Decode methods of the object :
String data = new String( "CVO BLOGSPOT" );

String encoded_data = p.Code( data );
String decoded_data = p.Decode( encoded_data );
Easy, no ? ;)

Have fun !

Tuesday, January 4, 2011

Andromede library available

Hi to all

The Andromede library (stable version 0.2.0) has just been released on This library implements a secure version of bittorrent protocol protected with the Perseus technology. You can now exchange your torrent files without fearing to be eavesdropped.
The How-to in English should be available soon.

Have fun with this library


Monday, January 3, 2011

Perseus library released

Hi to all,

The PERSEUS library has just been released in its first stable version 1.0.0. You can find the source code here and the extended version of the reference paper (presented at the iAWACS 2010 conference) here.

A new version of the library is under current development. It should be a major evolution since we managed to design a polynomial time decoding algorithm to replace the classical Viterbi algorithm. This will enable new applications with respect to PERSEUS. At the present time we intend to release in 2011:
  • VoIP platforms protected with PERSEUS.
  • Android app to protect voice and sms communications.
  • File protection on hard disk.
We are about to release the Andromede library (end of January) which protect torrent protocol with PERSEUS.

Have a happy new year 2011