Send Message to the Future? Blockchain-based Time Machines for Decentralized Reveal of Locked Information
arxiv(2024)
摘要
Conditional information reveal systems automate the release of information
upon meeting specific predefined conditions, such as time or location. This
paper introduces a breakthrough in the understanding, design and application of
conditional information reveal systems that are highly secure and
decentralized. By designing a new practical timed-release cryptography system
and a verifiable secret sharing scheme, a novel data sharing system is devised
on the blockchain that `sends messages in the future' with highly accurate
decryption times. This paper provides a complete evaluation portfolio of this
pioneering paradigm, including analytical results, a validation of its
robustness in the Tamarin Prover and a performance evaluation of a real-world,
open-source system prototype deployed across the globe. Using real-world
election data, we also demonstrate the applicability of this innovative system
in e-voting, illustrating its capacity to secure and ensure fair electronic
voting processes.
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