Quantum cryptography, a technique of producing secret messages that are reputedly uncrackable, may soon be used by orbiting communications satellites thanks to experiments by British and German researchers.The traditional weakness of sending encoded messages is eavesdropping. Quantum cryptography gets around this by sending an encoded message and, separately, a key to decode it, which are transmitted in pulses of individual light particles called photons.By the nature of quantum mechanics, if a single photon is intercepted en route, that changes the state of the information package as it arrives at the other end.That is a telltale for the legitimate recipient that his message has been tampered with -- the same as if someone received a letter that had been clumsily opened and then resealed, leaving traces of glue and fingerprints on the envelope.
http://timesofindia.indiatimes.com/cms.dll/articleshow?art_id=23998757
Popular Posts
-
http://www.homestarrunner.com/sbemail94.html
-
...why was this given the file name of skyfall?... Certain information, while not specific as to target, gives the government reason to beli...
-
Some good stuff from a Canadian futurist: - The rising power of the knowledge worker - Continuous training replaces job security; respect is...
-
Not a bad audio book, but I expected more. Big ideas: Build a high performance, high-trust culture; Identify desired results and un...
-
The concept of dragons was probably brought to Japan around 2,000 years ago, along with the technology for paddy agriculture. Their images h...
-
Very dry, dull book with some basic financial info like ROI and cash flow. Not a lot here.
-
... or, Decemberween. Whatever. http://www.homestarrunner.com/xmas04.html
-
Someone that gets it. Service-oriented software, when done correctly in a platform-agnostic way can be flexible, cheap, and can motivate m...
-
http://esamultimedia.esa.int/images/marsexpress/377-260208-2149-6-co-01-HebesChasma_H1.jpg
-
Peruvian archeologists have discovered the first full Inca burial site at Machu Picchu since the famous mountaintop citadel was discovered 9...
