I’ve just read Fernando Acero’s article in Kriptopolis about a new cryptography method based in thermal noise (Johnson noise) and Kirchoff laws. If investigators are right, we are in front of a cheaper, easier and probably more secure system than quantum cryptography.
The method was developed by Dr. Laszlo Kish of Department of Electrical and Computer Engineering at Texas A&M. Abstract and full document are here.
Maybe we can sleep again without worry of control by governs and great corporations.David against Goliath again?
Until now, it was not sure if the Kirchhoff-loop-Johnson-like-noise (KLJN) crypto system has practical relevance because, just like quantum communication, it looked like it was a point-to-point communication method. If you have a point-to-point communication method, in a network of N members, each member have to use (N-1) communicators and each member should be independently wired with all the other members. That means (N^2-N)/2 wires which is unpractical. This is the biggets practical problem with quantum communication.
Concerning the KLJN crypto system, the problem is solved and now it is network ready. It can distribute an N-bit long secret key in one KLJN clock step (2 steps with re-initialization) throught the whole network. It is using a KLJN network and a parallel regular network. The description is here:
http://www.ece.tamu.edu/%7Enoise/research_files/research_secure.htm
Laszlo Kish
Amazing! Congratulations again for your job!
And thanks for the link
Thanks!