Multi-key Authenticated Encryption with Corruptions: Reductions Are Lossy
Multi-key Authenticated Encryption with Corruptions: Reductions Are Lossy
复制标题
具有损坏的多密钥认证加密:减少是有损的
DOI:
10.1007/978-3-319-70500-2_14
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Bogdan Warinschi
中科院分区:
文献类型:
--
作者:
Tibor Jager;Martijn Stam;Ryan Stanley-Oakes;Bogdan Warinschi
We study the security of symmetric encryption schemes in settings with multiple users and realistic adversaries who can adaptively corrupt encryption keys. To avoid confinement to any particular definitional paradigm, we propose a general framework for multi-key security definitions. By appropriate settings of the parameters of the framework, we obtain multi-key variants of many of the existing single-key security notions.This framework is instrumental in establishing our main results. We show that for all single-key secure encryption schemes satisfying a minimal key uniqueness assumption and almost any instantiation of our general multi-key security notion, any reasonable reduction from the multi-key game to a standard single-key game necessarily incurs a linear loss in the number of keys. We prove this result for all three classical single-key security notions capturing confidentiality, authenticity and the combined authenticated encryption notion.
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DOI:
10.1007/11693383_8
发表时间:
2005-08
期刊:
--
影响因子:
--
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期刊:
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影响因子:
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影响因子:
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DOI:
--
发表时间:
2012
期刊:
Annual International Cryptology Conference
影响因子:
--
作者:
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