Future
The current commercial systems are aimed mainly at governments and corporations with high security requirements. Key distribution by courier is typically used in such cases, where traditional key distribution schemes are not believed to offer enough guarantee. This has the advantage of not being intrinsically distance limited, and despite long travel times the transfer rate can be high due to the availability of large capacity portable storage devices. The major difference of quantum key distribution is the ability to detect any interception of the key, whereas with courier the key security cannot be proven or tested. QKD (Quantum Key Distribution) systems also have the advantage of being automatic, with greater reliability and lower operating costs than a secure human courier network.
Factors preventing wide adoption of quantum key distribution outside high security areas include the cost of equipment, and the lack of a demonstrated threat to existing key exchange protocols. However, with optic fibre networks already present in many countries the infrastructure is in place for a more widespread use.
Read more about this topic: Quantum Key Distribution
Famous quotes containing the word future:
“The future is built on brains, not prom court, as most people can tell you after attending their high school reunion. But you’d never know it by talking to kids or listening to the messages they get from the culture and even from their schools.”
—Anna Quindlen (b. 1953)
“Common sense should tell us that reading is the ultimate weapon—destroying ignorance, poverty and despair before they can destroy us. A nation that doesn’t read much doesn’t know much. And a nation that doesn’t know much is more likely to make poor choices in the home, the marketplace, the jury box and the voting booth...The challenge, therefore, is to convince future generations of children that carrying a book is more rewarding than carrying guns.”
—Jim Trelease (20th century)
“Thou, too, sail on, O Ship of State!
Sail on, O Union, strong and great!
Humanity with all its fears,
With all the hopes of future years,
Is hanging breathless on thy fate!”
—Henry Wadsworth Longfellow (1807–1882)