A Lower Bound for One-Round Oblivious RAM
A Lower Bound for One-Round Oblivious RAM
复制标题
一轮遗忘 RAM 的下界
DOI:
10.1007/978-3-030-64375-1_16
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Hoover, Alexander
中科院分区:
文献类型:
--
作者:
Cash, David;Drucker, Andrew;Hoover, Alexander
We initiate a fine-grained study of the round complexity of Oblivious RAM (ORAM). We prove that any one-round balls-in-bins ORAM that does not duplicate balls must have eitherbandwidth orclient memory, whereNis the number of memory slots being simulated. This shows that such schemes are strictly weaker than general (multi-round) ORAMs or those with server computation, and in particular implies that a one-round version of the original square-root ORAM of Goldreich and Ostrovksy (J. ACM 1996) is optimal. We prove this bound via new techniques that differ from those of Goldreich and Ostrovksy, and of Larsen and Nielsen (CRYPTO 2018), which achieved anbound for balls-in-bins and general multi-round ORAMs respectively. Finally we give a weaker extension of our bound that allows for limited duplication of balls, and also show that our bound extends to multiple-round ORAMs of a restricted form that include the best known constructions.
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DOI:
--
发表时间:
2018
期刊:
IACR Cryptology ePrint Archive
影响因子:
--
作者:
Kasper Green Larsen;J. Nielsen
通讯作者:
J. Nielsen
DOI:
10.1109/focs.2018.00087
发表时间:
2018
期刊:
2018 IEEE 59th Annual Symposium on Foundations of Computer Science (FOCS)
影响因子:
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作者:
Sarvar Patel;G. Persiano;Mariana Raykova;Kevin Yeo
通讯作者:
Kevin Yeo
DOI:
10.1007/978-3-642-55220-5_23
发表时间:
2014
期刊:
2013 IEEE 26th Computer Security Foundations Symposium
影响因子:
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作者:
Craig Gentry;S. Halevi;Steve Lu;R. Ostrovsky;Mariana Raykova;Daniel Wichs
通讯作者:
Daniel Wichs
DOI:
--
发表时间:
2015
期刊:
Annual Symposium on Foundations of Computer Science
影响因子:
--
作者:
Garg, Sanjam;Lu, Steve;Ostrovsky, Rafail
通讯作者:
Ostrovsky, Rafail
DOI:
10.1007/978-3-319-70694-8_20
发表时间:
2017
期刊:
The Annals of Statistics
影响因子:
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作者:
T;Kai;E. Shi
通讯作者:
E. Shi