Quantum key distribution based on orthogonal states allows secure quantum bit commitment
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چکیده
منابع مشابه
Anonymous key quantum cryptography and unconditionally secure quantum bit commitment
A new cryptographic tool, anonymous quantum key technique, is introduced that leads to unconditionally secure key distribution and encryption schemes that can be readily implemented experimentally in a realistic environment. If quantum memory is available, the technique would have many features of public-key cryptography; an identification protocol that does not require a shared secret key is p...
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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...
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A protocol for quantum bit commitment is proposed. The protocol is feasible with present technology and is secure against cheaters with unlimited computing power as long as the sender does not have the technology to store an EPR particle for an arbitrarily long period of time. The protocol is very efficient, requiring only tens of particles. email:[email protected] Atago, Tama-shi, Toky...
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It is generally believed that unconditionally secure quantum bit commitment is ruled out in principle by a “no-go theorem”. We point out that the theorem only establishes the existence of a cheating unitary operator in any scheme of quantum bit commitment, however there is no proof that the unitary operator is always known to the cheating party, hence it does not necessarily follow that quantum...
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ژورنال
عنوان ژورنال: Journal of Physics A: Mathematical and Theoretical
سال: 2011
ISSN: 1751-8113,1751-8121
DOI: 10.1088/1751-8113/44/44/445305