Quantum crypto - with nothing more than STANDARD broadband fibre

Re: So its a lock in detector with a 100ps window.

Here is the problem though... (Its only good as others have already stated) from your end point to the endpoint of the line (usually the local telco).

This solution sounds like it is great for intra-office connections, government and military uses, where they have self-run dedicated lines... not for the average Joe.

For your home, you are still having to rely that your local ISP that is bringing this cable to you has good enough security that the routers/servers that your connection is passing through is not compromised. Even further you have trust that some rogue employee is not sniffing out your communications themselves (and last time I checked most telco/ISP's don't even drug test, let alone do comprehensive background checks.

And then finally you have to trust that telco to not allow taping of the device by feds/police or just outright collecting the data and handing it over to whichever government agency requests it.

I remember when VoIP was first deployed it ran under the radar for about a year, and then all the VoIP providers (like Vonage, LIngo etc) all got a personal call from the FBI.... place these routers in your data center cages, or you are out of business....

So I don't see most Governments even allowing such lines being sold to the public (and mob, terrorists etc) without the ability of the ISP to intercept the stream of data once it is off the initial first connection.

Again, this only seems of use to me if you (your organization anyway) are in physical control of BOTH ends of the line, then you can perceive interruptions to the line in transit.... otherwise this has no value to the home user.....

Besides there are things line Tor, encryption VPN's etc that already allow secure comms for the private individual. You can protect the data stream via encryption, but you will never (via Tor or any other method) really truly hide the connection itself.... its just the nature of networks, they are trackable.

The only to not have the start and end points of your communication is to effectively disappear in the noise (not have anyone looking at you so to speak)

Re: Needs more work

"it would seem more work is needed before this actually turns into a useful technology"

Well that wins the "No Sh*t Sherlock" award for the day. You'd have scoffed at the Wright Brothers too, I'd imagine.

Re: Needs more work

Isn't this to just transfer the 'key' securely though? If so, then the optical connection can be throttled back to transfer keys, and then ran again at full speed until a new key needs to be sent.

Re: Needs more work

Erm - A 100Gbps DWDM / OTN system will send 100Gbps (plus FEC Overhead - usually between 11-16%) to line of traffic and receive 100Gbps per wavelength. No Service Provider would accept anything less.