A New Cryptography Network named “Quantum” has been invented by Toshiba which is NSA Proof means you would not be intercepted by NSA.
Quantum is a network system through which the information sent from point A to B can’t be intercepted and if we talk about the Laws of physics, it dictates that nobody—not even the NSA—can measure a quantum system without disrupting it.
But problem with this cryptography is that it only works in short distances and uses lasers, a dedicated fiber optic network (prohibitively expensive), which is limiting its use to a handful of research labs, corporations and governments.
A new research paper from scientists at Toshiba brings quantum cryptography a baby-step closer to the masses. The paper, published today in Nature, explains how to expand a point-to-point quantum network with only two users into a “quantum access network” with up to 64 users.
Co-author Andrew Shields (head of the Quantum Information Group of Toshiba Research Europe) said, “This kind of communication cannot be defeated by future advances in computing power, nor new mathematical algorithms, nor fancy new engineering,”
“As long as the laws of physics hold true, it will ensure that your communications are fully secured.” Andrew also added’
How it works?
Quantum network uses disunite photons to encode an encryption key, then the photons sent down a fiber optic cable until they reach their destination, photon detector, which counts them, and delivers the key to the intended recipient. If the photons are interfered with, the individual packets of information are forever altered and the recipient can see the telltale signs of tampering.
According to Quartz:
The Toshiba team focused its efforts on improving the photon detector, and created a system that counts up to 1 billion photons per second, which makes it feasible to add more people to the network.
In the meantime, Quantum cryptography systems cost around $50,000, and only connect two parties at a time.”If up to 64 people can share a single photon detector then you can spread out those costs,” Andrew said’
The next stop will be to increase the distance that photon can travel, currently the record is of 200 km using a fibre optic cable. But researchers are working on ways to transmit quantum bits on so-called “noisy” fiber that carries other information, which means that the day may not be far away when your Gmail may have a quantum key.