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arXiv quant-ph/9709053quant-ph
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用量子计算机做出空洞的承诺

Making An Empty Promise With A Quantum Computer

H. F. Chau, H. -K. Lo

摘要:

爱丽丝在心里做了一个决定。虽然她现在不想向鲍勃透露,但她想让鲍勃相信她致力于这个特定的决定,以后不能改变。爱丽丝有办法得到鲍勃的信任吗直到最近,研究人员还认为上述任务可以在量子力学的帮助下完成。量子方案的安全性依赖于不确定原理。然而,这种乐观情绪最近被梅耶尔和我们打破了,他们发现,如果爱丽丝有一台量子计算机,她总是可以改变主意。在这里,我们调查这一戏剧性的发展及其对其他量子密码方案的安全性的影响。

英文摘要:

Alice has made a decision in her mind. While she does not want to reveal it to Bob at this moment, she would like to convince Bob that she is committed to this particular decision and that she cannot change it at a later time. Is there a way for Alice to get Bob's trust? Until recently, researchers had believed that the above task can be performed with the help of quantum mechanics. And the security of the quantum scheme lies on the uncertainty principle. Nevertheless, such optimism was recently shattered by Mayers and by us, who found that Alice can always change her mind if she has a quantum computer. Here, we survey this dramatic development and its implications on the security of other quantum cryptographic schemes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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