Homomorphic Time-Lock Puzzles and Applications
Homomorphic Time-Lock Puzzles and Applications
复制标题
同态时间锁谜题及其应用
DOI:
10.1007/978-3-030-26948-7_22
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Sri Aravinda Krishnan Thyagarajan
中科院分区:
文献类型:
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作者:
Giulio Malavolta;Sri Aravinda Krishnan Thyagarajan
Time-lock puzzles allow one to encrypt messages for the future, by efficiently generating a puzzle with a solutionsthat remains hidden until timehas elapsed. The solution is required to be concealed from the eyes of any algorithm running in (parallel) time less than. We put forth the concept ofhomomorphic time-lock puzzles, where one can evaluate functions over puzzles without solving them, i.e., one can manipulate a set of puzzles with solutionsto obtain a puzzle that solves to, for any functionf. We propose candidate constructions under concrete cryptographic assumptions for different classes of functions. Then we show how homomorphic time-lock puzzles overcome the limitations of classical time-lock puzzles by proposing new protocols for applications of interest, such as e-voting, multi-party coin flipping, and fair contract signing.
DOI:
10.1145/2746539.2746574
发表时间:
2015
期刊:
Proceedings of the forty-seventh annual ACM symposium on Theory of Computing
影响因子:
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作者:
Nir Bitansky;Sanjam Garg;Sidharth Telang
通讯作者:
Sidharth Telang
DOI:
10.1007/978-3-662-53018-4_12
发表时间:
2016
期刊:
IACR Cryptol. ePrint Arch.
影响因子:
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作者:
["Geoffroy Couteau
通讯作者:
["Geoffroy Couteau