Quantum mechanics creates location-based cryptography
By Alasdair Wilkins | io9.com
Imagine a form of encrypted communication so secure that it’s physically impossible to access it unless you’re actually at the location where you’re supposed to hear it. Quantum mechanics makes location-based cryptography possible - without any pesky codes or keys.
The basic idea is simple - create an encrypted communication where your actual physical location is the only key required to gain access to the hidden information. It would eliminate any need to create and store decryption keys, which is disproportionately the most complex and time-intensive task in cryptography. You could encrypt a secure line so that the only people who could ever hear would have to be at, say, two secure military bases, eliminating any chance of someone listening in from a third location.
And now computer scientists at UCLA have figured out how to do it. The big problem holding back location-based cryptography was that triangulation, the classical method of verifying the receiver’s location is the correct one, can be forged if enemies work together to provide just the right combination of wrong information. But that’s just classical physics - quantum mechanics has that problem solved. The solution lies in the no-cloning theorem, an outgrowth of the uncertainty principle that basically states it’s impossible to create an exact replica of a quantum state.
This means that, when the secure transmitter sends out multiple quantum bits, or qubits, the intended receiver is the only device that can verify the information and confirm they are who they say they are. If an adversary was trying to listen in, they’d still need multiple transmitters to mimic the supposed location, but that’s now physically impossible because the first adversary would need to both store the qubit’s state and send it on to the next confederate, and quantum mechanics says that’s impossible.
As the authors note in their abstract:
Therefore, our work shows that position-based quantum cryptography is one of the rare examples...for which there is such a strong separation between classical and quantum cryptography. Our results open a fascinating new direction for position-based security in cryptography where security of protocols is solely based on the laws of physics and proofs of security do not require any pre-existing infrastructure.
Article from: io9.com
Also tune into:
Nick Pelling - The Voynich Manuscript, Alan Turing and Ciphers
Nick Pelling - Deciphering of the Mysterious Voynich Manuscript
Jim Gardner - The Intelligent Universe, Bio-Cosm, ET, AI and Evolution
Two Centuries On, a Cryptologist Cracks a Presidential Code
Code Cracked! Cyber Command Logo Mystery Solved
Crop Circle with Binary Code (Video)
The Kryptos Code - The Code the CIA Can’t Crack
Wiltshire crop circle identified as symbolic code for first ten places of pi
Extended Awareness: The Possibilities of Quantum Consciousness
The quantum computer in your head
Quantum Communication (Video)
Is Quantum Mechanics Controlling Your Thoughts?
Privacy-Enhancing Technologies for Mobile Applications (Video)
Theory and Practice of Cryptography (Video)
Latest News from our Front Page
West’s tributes to late Saudi King reveal hypocrisy not democracy
Hypocrisy is not usually regarded as a virtue of leadership, yet judging by the gushing tributes paid to Saudi Arabia’s King Abdullah by various Western governments and establishment figures on his death, there are those who believe it should be.
In the UK this hypocrisy has been stretched to breaking point with the decision to fly the flags over Downing ...
Millions of GMO insects could be set loose in Florida Keys
Millions of genetically modified mosquitoes could be released in the Florida Keys if British researchers win approval to use the bugs against two extremely painful viral diseases.
Never before have insects with modified DNA come so close to being set loose in a residential U.S. neighborhood.
"This is essentially using a mosquito as a drug to cure disease," said Michael Doyle, executive ...
Furguson Scared The Super - Rich So Bad They're Planning Exits
According to a speaker at the World Economic Forum in Davos, Ferguson and Occupy absolutely terrified the world’s super-rich, and now they’re buying airstrips and farms in remote locations to escape to.
At the World Economic Forum in Davos, Switzerland, which was held between January 21-24, over 2,500 leaders in the fields of business, international politics, academia and journalism met to discuss ...
The Ring Of The Nibelungs
Dark Kingdom: The Dragon King (also known as Ring of the Nibelungs, Die Nibelungen, Curse of the Ring, and Sword of Xanten) is a 2004 German television film directed by Uli Edel and starring Benno Fürmann, Alicia Witt, Kristanna Loken, and Max von Sydow. The film is based on the Norse mythology story Völsungasaga and the German epic poem Nibelungenlied, ...
Google Street View Shows NAACP Bombing a Hoax
Caught in the act: NAACP passing off old soot marks as new in ‘bomb’ hoax
NAACP Colorado Chapter President Henry D. Allen Jr. has been caught in the act of passing off old soot marks as new damage from the recent ‘explosion’ at the Colorado Springs chapter headquarters.
Although Gotnews.com has previously remarked on the minimal damage as reported by the ...
|More News » |