Quantum Bit Commitment Expansion
نویسنده
چکیده
The paper was retracted.
منابع مشابه
Unconditionally Secure Quantum Bit Commitment Expansion
It is known that a quantum bit commitment that would be secure against all attacks allowed by quantum mechanics is impossible if a standard model of communication is used. This result was a severe step back for quantum cryptography. However, this impossibility result applies only if no bit commitment exists initially between Alice and Bob. Here we consider an initial situation in which the comm...
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Mayers, Lo and Chau proved unconditionally secure quantum bit commitment is impossible. It is shown that their proof is valid only for a particular model of quantum bit commitment encoding, in general it does not hold good. A different model of unconditionally secure quantum bit commitment both entanglement and disentanglement-based is presented. Even cheating can be legally proved with some le...
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Currently, it is believed in the literature that unconditionally secure bit commitment is impossible in non-relativistic quantum cryptography while only a weaker notion of bit commitment with finite commitment time is achievable in relativistic quantum setting. Moreover, relativistic classical bit commitment protocols allow arbitrary long commitment time but such protocols are not practically f...
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The desire to obtain an unconditionally secure bit commitment protocol in quantum cryptography was expressed for the rst time thirteen years ago. Bit commitment is suucient in quantum cryptography to realize a variety of applications with unconditional security. In 1993, a quantum bit commitment protocol was proposed together with a security proof. However, a basic aw in the protocol was discov...
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The desire to obtain an unconditionally secure bit commitment protocol in quantum cryptography was expressed for the first time thirteen years ago. Bit commitment is sufficient in quantum cryptography to realize a variety of applications with unconditional security. In 1993, a quantum bit commitment protocol was proposed together with a security proof. However, a basic flaw in the protocol was ...
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