Comments on: Quantum Cryptography Improves by Factor of 100; Ready for Primetime?

By: dO_ob

dO_ob — Wed, 21 Apr 2010 19:54:11 +0000

In 2008, concerned students at MIT worked to develop a way to hack into the photon stream itself using theororetical mechanical transferrance. Late last year they succeeded. The secret to hacking the stream is to twist the

By: John

John — Wed, 21 Apr 2010 16:28:54 +0000

ChH I think the problem is one of the measured state of the photons when they leave the senders device. These quantam states can not be duplicated by any means. The receivers’ device is expecting a this specific quantum state. When the hacker measures the photons the quantum state must change by the nature of the Heisenberg Uncertainty Principle. This is the beauty of the system.

By: Brian Too

Brian Too — Wed, 21 Apr 2010 00:10:17 +0000

Although this is progress and I applaud that, remember the iron-clad rule of security. Make one part of the system more secure (perfect, even) and the attacks will simply move elsewhere.

These days that seems to be the people; legitimate users can often be conned into doing something they should not do. Security systems are often rendered totally useless by authorized clients making a wrong decision and bypassing all controls. There are even plenty of users who think that security is an Information Technology problem and if they expose a system to risk, it’s still someone else’s responsibility!

By: ChH

ChH — Tue, 20 Apr 2010 23:26:18 +0000

Why couldn’t a hacker intercept, measure and divert photons, then retransmit them based on the measurements?