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Practical Quantum Cryptography

Alien54 writes: "Saw this on Eureka Alert: A commercially available system for quantum key distribution and cryptography has been released by a spin-off company from the University of Geneva. The system has been tested over distances up to 70km (from Geneva to Lausanne) through standard optical fiber cables and connects to PCs via USB ports. Transmission rates of about 60 bits per seconds were achieved, sufficient for key distribution. You can see the original abstract here, which also has a link for download of the paper in PDF, Postscript, and other formats."

7 of 164 comments (clear)

  1. quantum = lame by Anonymous Coward · · Score: -1, Flamebait

    as much as quantum computing doesnt interest me the fact is they do cool sounding shit that doesnt go anywhere or change my life in anyway way therefore this is useless you linux fags!

  2. Re:Money isn't everything... by 3Bees · · Score: 0, Flamebait

    > Oh, before the argument comes: no, in Switzerland we don't pay much more taxes than in USA, we pay a bit more, but not that much

    I'll bet a shiny quarter that your upper classes pay more than ours do (and that you have a higher capital gains tax).

    --Daniel

    --
    "I think we should tax people who stand in water! " - Mr. Gumby
  3. as a person in an upper tax bracket by Anonymous Coward · · Score: -1, Flamebait

    Shut the fuck up. I don't mind paying more money. I can afford more money and a higher percentage of my income going to taxes than someone making minimum wage. if I pay 40 percent, I still have more afterwards than someone making half as much and being taxed accordingly.

    Also, I have a trust fund. When I sell stuff off, I pay capital gains (not gaines) taxes, and yes, I don't love having to pay taxes, but yes, being well off, and owing that position in life as much to society in america as well as my own work and that of my parents, I can and should shoulder a greater part of the burden of running the country.

    That said, I don't like how much of the government is run. But it's completely fair to have people pay more if they can. You're not being penalized for being successful, you're being asked to give more because you can. People aren't poor to avoid paying taxes, they're poor because they can't do better. You right wing loonies bug the crap out of me.

    1. Re:as a person in an upper tax bracket by Anonymous Coward · · Score: -1, Flamebait

      Shut the fuck up.

      How intelligent!

      I don't mind paying more money. I can afford more money and a higher percentage of my income going to taxes than someone making minimum wage. if I pay 40 percent, I still have more afterwards than someone making half as much and being taxed accordingly.

      Warning to the gentle reader: statements like the one in italics above come from broke professional college students/faculty that have never earned a nickle doing real work in their lives.

      Then go right ahead and do it yourself without forcing others to do it at gunpoint you flaiming Commie! I have a child to take care of and, sorry bud, he needs my cash more than your stinking Liberal Arts Department does.

      Also, I have a trust fund. When I sell stuff off, I pay capital gains (not gaines) taxes, and yes, I don't love having to pay taxes, but yes, being well off, and owing that position in life as much to society in america as well as my own work and that of my parents, I can and should shoulder a greater part of the burden of running the country.

      Obviously your favorite charity is the government beurocracy, so be it, go ahead and send every dime OF YOUR OWN CASH to them!

      No point in arguing with people like you, you feel that just because you like something everybody else has to do it. Well, not everybody, just the "little people." Right?

      Just becuase you think that you owe some debt to some segment of society does not mean that everybody else believes the same thing.

      Too bad pal, you are in a fantasy! Leave me out of it and go shut up the lambs that are afraid of you and your Socialist kind. Say hi to Jane Fonda and Noam Chomski at your next Party meeting, don't let the door hit ya where the good lord split ya!

  4. Easy to break. by micromuncher · · Score: -1, Flamebait

    This is amusing.

    I knew a dude who started a quantum .com, and a dude who was contracted to "write the software." During the course of developing the software, it became completely obvious that
    1) quantum crypto was good for random number generation
    2) " " was bad for encryption

    The theory is that bouncing messages, throwing in noise, and using transmission latency entropy you could get keyless exchange... the reality was (according the guy who was writing the software who was summarily fired when he provided an example of how it could be broken) it still is prone to man in the middle.

    I put quantum encryption up there with the rest of the dot com snake oil.

    "I have a cure for the common cold! Give me millions to bring it to market and make you investors rich!"
    "Ok, great, let's do it. Oh, by the way, what is the cure?"
    "Its a highly advanced constriction system that is placed over the aspiratory orifaces that eliminates the environment virii or bacteria require to propagate."
    "Hmm... looks like a bag."
    "Its made of world class, space aged, hydrocarbon based materials! We have patent pending."
    "Hmm... a plastic bag. Doesn't it kill the patient?"
    "We don't see it that way. We prefer to think of it as 100% effective in eliminating the root cause."

    --
    /\/\icro/\/\uncher
  5. Re:Money isn't everything... by Anonymous Coward · · Score: -1, Flamebait

    When you're making more money you can also contribute more. How can that be so hard to understand?

    Ahh, actually "we" understand this just fine and YOU do not.

    You seem to deny that $20,0000 is a bit more than $10,000. Double as a matter of fact. You have a problem with someone that makes double than another "only" paying double, you need to soak them for some compleatly irrational reason.

    See, to some of us there is a difference between a "contribution" being voluntary and a "contribution" being compusory.

    We would like to see everybody's COMPULSORY contribution be the same percentage, thus (yes, I know you are having trouble with this) the people that make more money DO make COMPULSORY contributions in greater amounts than those that make less money.

    Some of us would like to contribute more to much more worthy causes than say, spiking national parks with Lynx hair, as agents of the Department of the Interior did not too long ago, but people like YOU think that we are just not bright enough to make our own decisions with our own money. You know, since we think that our retired parents could use some direct help from US instead of some BS federal program, or our children could benefit from a private school better than the cesspool the government created and labelled a school. Things like that. But I digress...

    You also indicate that the only "contributions to society" are made through taxation then doled out by the government. Sorry Big Brother, there is much more to society than that. Sorry, but if I wish to contribute in ways that just don't fit your theft model, too bad.

    Your messed up "logic" falls apart from the start and never recovers. If YOU want to send every nickle to the government go right ahead. Leave my nickles alone thank you.

  6. well geez by Anonymous Coward · · Score: -1, Flamebait
    Then go right ahead and do it yourself without forcing others to do it at gunpoint you flaiming Commie! I have a child to take care of and, sorry bud, he needs my cash more than your stinking Liberal Arts Department does.
    1. It's spelled "flaming." As in, "you're a flaming moron." Also, "breaucracy" not "beurocracy", "nickel" not "nickle", and "Chomsky" not "Chomski." Perhaps if you'd spent a little more time at my "stinking Liberal Arts Department" you'd know how to spell.
    2. Your writing style is semi-coherent. For example, "Leave me out of it and go shut up the lambs that are afraid of you and your Socialist kind," might technically be a sentence in a purely grammatical sense, but it doesn't communicate anything. Now, if you'd meant to call me a socialist, and to explain that you dislike socialism, its ideology, and its practitioners, you could have done so as follows: "I don't like you socialists; keep your opinions to yourself."
    3. You probably shouldn't have had a child. You clearly aren't capable of providing enough money to support the child (as evidenced by your statements to that effect, as well as your obviously presecondary education). Don't blame the tax structure because you made some foolish decision to have a child you should have known you couldn't care for. Maybe you should give it up for adoption