|InterJournal Complex Systems, 63
|Manuscript Number: |
Submission Date: 963011
|Unconditionally secure quantum bit commitment is impossible|
Category: Brief Article
The claim of quantum cryptography has always been that it can provide protocols that are unconditionally secure, that is, for which the security does not rely on any restriction on the time, space or technology available to the cheaters. We show that this claim cannot be applied to any quantum bit commitment protocol. We briefly discuss the consequences for quantum cryptography.
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