Secure Classical Bit Commitment Using Fixed Capacity Communication Channels
نویسندگان
چکیده
منابع مشابه
Secure Classical Bit Commitment over Finite Channels
If mistrustful parties A and B control two or more appropriately located sites, special relativity can be used to guarantee that a pair of messages exchanged by A and B are independent. Using this fact, an unconditionally secure relativistic bit commitment protocol, RBC1, was recently defined. Security is maintained in RBC1 by exchanging a sequence of messages whose transmission rate increases ...
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In a secure bit commitment protocol involving only classical physics, A commits either a 0 or a 1 to B. If quantum information is used in the protocol, A may be able to commit a state of the form α|0〉 + β|1〉. If so, she can also commit mixed states in which the committed bit is entangled with other quantum states under her control. We introduce here a quantum cryptographic primitive, bit commit...
متن کاملUnconditionally Secure Bit Commitment
We describe a new classical bit commitment protocol based on cryptographic constraints imposed by special relativity. The protocol is unconditionally secure against classical or quantum attacks. It evades the no-go results of Mayers, Lo and Chau by using a sequence of messages which includes a further verification stage after bit revelation. PACS numbers: 03.67.-a, 03.67.Dd, 89.70.+c Electronic...
متن کاملUnconditionally Secure Quantum Bit Commitment
Lo and Chau, and independently Mayers, have shown that all quantum bit commitment schemes proposed to date are insecure: one or both participants can cheat if they have a quantum computer. They claim also to have demonstrated that unconditionally secure quantum bit commitment is impossible. However, their no-go arguments rely on models of quantum cryptographic protocols which are insufficiently...
متن کاملExperimental unconditionally secure bit commitment.
Quantum physics allows for unconditionally secure communication between parties that trust each other. However, when the parties do not trust each other such as in the bit commitment scenario, quantum physics is not enough to guarantee security unless extra assumptions are made. Unconditionally secure bit commitment only becomes feasible when quantum physics is combined with relativistic causal...
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ژورنال
عنوان ژورنال: Journal of Cryptology
سال: 2005
ISSN: 0933-2790,1432-1378
DOI: 10.1007/s00145-005-0905-8