Quantum-Space Attacks

Details Quantum-Space Attacks Quantum-Space Attacks

2007-11-19

arxiv.org/abs/0711.3019v2

Physics

Quantum Physics

25 pages, 3 figures. An improved and slightly longer version

Scientific paper

Theoretical quantum key distribution (QKD) protocols commonly rely on the use of qubits (quantum bits). In reality, however, due to practical limitations, the legitimate users are forced to employ a larger quantum (Hilbert) space, say a quhexit (quantum six-dimensional) space, or even a much larger quantum Hilbert space. Various specific attacks exploit of these limitations. Although security can still be proved in some very special cases, a general framework that considers such realistic QKD protocols, as well as} attacks on such protocols, is still missing. We describe a general method of attacking realistic QKD protocols, which we call the `quantum-space attack'. The description is based on assessing the enlarged quantum space actually used by a protocol, the `quantum space of the protocol'. We demonstrate these new methods by classifying various (known) recent attacks against several QKD schemes, and by analyzing a novel attack on interferometry-based QKD.

Affiliated with

Also associated with

No associations

Rating

Quantum-Space Attacks does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Quantum-Space Attacks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum-Space Attacks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-391401