Protection of information in quantum qatabases

Details Protection of information in quantum qatabases Protection of information in quantum qatabases

1997-12-07

arxiv.org/abs/quant-ph/9712016v1

Complex Syst. 11 (1997) 223-232

Physics

Quantum Physics

10 pages, Latex

Scientific paper

The conventional protection of information by cryptographical keys makes no sense if a key can be quickly discovered by an unauthorized person. This way of penetration to the protected systems was made possible by a quantum computers in view of results of P.Shor and L.Grover. This work presents the method of protection of an information in a database from a spy even he knows all about its control system and has a quantum computer, whereas a database can not distinguish between operations of spy and legal user.

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