| E. Biham and T. Mor, Security of quantum cryptography against collective attacks, Phys. Rev. Lett., 78(1997), 2256--2259. |
.... was written in collaboration with Massimo Palma and Asher Peres [34] Norbert Lutkenhaus also studied the security of quantum cryptography against eavesdropping [54] A particularly promising approach is due to Eli Biham and Tal Mor, where they consider what they call the collective attack [17, 18]. See also [14] for a study of the security of the parity bit in quantum cryptography. Even though they have retracted their claim of an ultimate proof of security for quantum cryptography in noisy channels, the techniques presented by Hoi Kwong Lo and Hoi Fung Chau may well prove useful [52] In ....
Biham, E. and T. Mor, "On the security of quantum cryptography against collective attacks", manuscript, 1996. Available at http://xxx.lanl.gov/ps/quant-ph/9605007.
....joint attacks. Such attacks are beyond current technology, but obviously, a cryptosystem is not absolutely secure if some future technology could break it. Thus, proving security against any attack allowed by the rules of physics is a vital step. In this paper we complete the work started in [8, 9, 10] to conclude that, under a compatible error model, the four state scheme [3] for quantum key distribution is secure against any collective attack, an important subclass of the joint attacks. The first version of our paper appeared in the public domain 1 already in 1998 but has not yet been ....
....result is an 1 In the Los Alamos Archive xxx.lanl.gov archive quant ph; Quant Physics number 9801022. 2 important step on the route to proving the security of QKD against joint attacks. It can lead to such a proof if one generalizes this work, or if one succeeds to prove an older conjecture [9], namely, that collective attacks are the strongest subclass of the joint attacks (meaning that Eve can obtain the largest amount of mutual information if she uses a collective attack, and not if she uses any other joint attack) Recently, by exploiting and generalizing the techniques presented ....
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E. Biham and T. Mor, Security of quantum cryptography against collective attacks, Phys. Rev. Lett., 78(1997), 2256--2259.
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