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User: quasar

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  1. Digital time stamping on Encrypt Information In Images Without Distortion · · Score: 1

    Digital time stamping e.g. the algorithm used by Surety, inc., guarantees a digital document isn't changed from the original time of registry without touching one pristine pixel of the original image. I think this thing is better for steganography than for demonstrating authenticity.

  2. Check S-Key on What Would You Do With a New Form of Encryption? · · Score: 1

    Just be sure to check out the old Bellcore (now Telcordia) patents on S-Key to make sure your idea doesn't conflict.

  3. (Yawn) Old hat... on Advanced Anti Electronic Weapons · · Score: 1

    This stuff has been around forever. The first
    laser weapons were powered by the hydrogen-
    fluorine reaction and were tested by the Army
    in the 60s. You could melt through tank armor so
    long as a) you could keep the beam up for long
    enough, and b) no one sneezed and caused your
    fluorine tanks to explode. Presumably the
    technology has improved but is still inferior
    to good old guided missiles; high powered
    lasers have serious problems in an atmosphere
    due to plasma tube effects as well as simple
    attenuation due to dust and smoke.

    As for electromagnetics, they too have been
    around for a long time. Anyone with a maser
    can mess up a lot of electronics, and the
    police have been trialing anti-vehicle
    weapons for several years at least. If
    you take apart a high-power microwave
    oven (and survive the experience; be careful
    out there boys and girls) you would
    probably wind up with a pretty decent
    anti-electronics device.

    The transcript gives the impression that
    these weapons are innovative and grounds
    for immediate alarm when in fact they have
    been used and understood for many years.