论文标题

固定延迟加密

Delay Encryption by Cubing

论文作者

Maffei, Ivo, Roscoe, A. W.

论文摘要

延迟加密(通常称为定时释放加密)是一种方案,其中仅在给定的时间内确保其机密性将消息发送到将来。我们提出了一个基于新型的时间锁定难题的新方案。这个难题依赖于重复平方是一个固有的顺序过程的假设。我们对我们计划的许多古典和量子攻击进行了广泛而实用的分析,并得出结论,考虑到一些预防措施,它是安全的。

Delay Encryption (often called Timed-Release Encryption) is a scheme in which a message is sent into the future by ensuring its confidentiality only for a given amount of time. We propose a new scheme based on a novel time-lock puzzle. This puzzle relies on the assumption that repeated squaring is an inherently sequential process. We perform an extensive and practical analysis of many classical and quantum attacks on our scheme and conclude that it is secure given some precautions.

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