First Exploit On Quantum Cryptography Confirmed

Vadim Makarov writes "Physics World reports on researchers demonstrating a full eavesdropper on a quantum key distribution link. Unlike conventional exploits for security vulnerabilities that are often just a piece of software, spying on quantum cryptography required a box full of optics and mixed-signal electronics. Details are published in Nature Communications, and as a free preprint. The vulnerability was known before, but this is the first actual working exploit with secret-key recording confirmed. Patching this loophole is in progress. Disclosure: I am one of the researchers who worked on this."

Re:Oh well.

[Anonymous Coward]

No wait! The line is both perfectly secure and being eavesdropped on, at the same time. It's not until we hear the message that it becomes one or the other.

Re:A permanent fix?

[yarnosh]

Don't be too certain about that.

Disclosure?

[dk90406]

"Disclosure: I am one of the researchers who worked on this."
Disclosure is an interesting word here. I would have used the word "brag" - and I think you are fully entitled to brag about that feat.

Impact on Bitcoin?

[turkeyfeathers]

Does this have any impact on the security of my bitcoin wallet? If not, who cares.