Comment Re:hype alert (Score 1) 118
It points out that even if you use the full QC machinery to prevent the eavesdropper from seeing the key, that is not enough when using the key for authentication within QC.
Quantum Cryptography Broken, and Fixed 118
schliz writes in with research out of Sweden in which researchers showed that, looking at a quantum cryptographic system as a whole, it was possible for an eavesdropper to extract some information about the QC key, thus reducing the security of the overall system. The team then proposed a cheap and simple fix for the problem. "The advanced technology was thought to be unbreakable due to laws of quantum mechanics that state that quantum mechanical objects cannot be observed or manipulated without being disturbed. But a research team at Linköping University in Sweden claim that it is possible for an eavesdropper to [get around the limitations] without being discovered. In a research paper, published in the international engineering journal IEEE Transactions on Information Theory (abstract), the researchers propose a change in the quantum cryptography process that they expect will restore the security of the technology."
Submission + - Quantum cryptography broken - and fixed (itnews.com.au)
schliz writes: Quantum cryptography — commonly lauded as an absolutely secure avenue of data transfer — has been broken.
The advanced technology was thought to be unbreakable due to laws of quantum mechanics that state that quantum mechanical objects cannot be observed or manipulated without being disturbed. But a research team at Linköping University in Sweden claim that it is possible for an eavesdropper to extract the quantum cryptographic key without being discovered.
In a research paper, published in the international engineering journal IEEE Transactions on Information Theory, the researchers propose a change in the quantum cryptography process that they expect will restore the security of the technology.
The advanced technology was thought to be unbreakable due to laws of quantum mechanics that state that quantum mechanical objects cannot be observed or manipulated without being disturbed. But a research team at Linköping University in Sweden claim that it is possible for an eavesdropper to extract the quantum cryptographic key without being discovered.
In a research paper, published in the international engineering journal IEEE Transactions on Information Theory, the researchers propose a change in the quantum cryptography process that they expect will restore the security of the technology.
