Unconditionally Secure Bit Commitment by Transmitting Measurement Outcomes
نویسندگان
چکیده
منابع مشابه
Unconditionally Secure Bit Commitment by Transmitting Measurement Outcomes
We propose a new unconditionally secure bit commitment scheme based on Minkowski causality and the properties of quantum information. The receiving party sends a number of randomly chosen Bennett-Brassard 1984 (BB84) qubits to the committer at a given point in space-time. The committer carries out measurements in one of the two BB84 bases, depending on the committed bit value, and transmits the...
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...
متن کاملSecurity Details for Bit Commitment by Transmitting Measurement Outcomes
We spell out details of a simple argument for a security bound for the secure relativistic quantum bit commitment protocol of Ref. [1]. Introduction Recently, a new quantum relativistic bit commitment protocol [1] was introduced. Its security relies, essentially, on the impossibility of completing a nonlocal measurement on a distributed state outside the joint future light cone of its component...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2012
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.109.130501