On 6/25/07, Greg Troxel <[EMAIL PROTECTED]> wrote:
1) Do you believe the physics? (Most people who know physics seem to.)
For those who would like to know a little more about the physics, see: <http://www.icfo.es/images/publications/J05-055.pdf>, "Quantum Cloning", Valerio Scarani, Sofyan Iblisdir, and Nicolas Gisin. This is a late 2005 review and of eavesdropping techniques for QKD. Much of the terminology of quantum physics is unfamiliar to me but I think the paper states that Eve could theoretically get 5/6 of the bits through cloning and to keep this from happening, Alice and Bob have to assume an eavesdropper if more than 11% of the bits have errors. also: <http://w3.antd.nist.gov/pubs/Mink-SPIE-One-Time-Pad-6244_22.pdf>, "One-Time Pad Encryption of Real-Time Video1", Alan Mink, Xiao Tang, LiJun Ma, Tassos Nakassis, Barry Hershman, Joshua C. Bienfang, David Su, Ron Boisvert, Charles W. Clark and Carl J. Williams - a more accessible paper describing a working system where NIST claims bit error rates in the 3% range while generating key material at greater than 2Mb/s. Its not clear whether the bit error rate is before or after an error correction stage but the paper discusses how bit error rate reduces the overall result after privacy amplification so I believe they have thought of Eve cloning photons in flight. -Michael --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]