Adaptive Garbled RAM from Laconic Oblivious Transfer

Adaptive Garbled RAM from Laconic Oblivious Transfer
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来自 Laconic Oblivious Transfer 的自适应乱码 RAM

DOI:
10.1007/978-3-319-96878-0_18
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发表时间:
2018
期刊:
IACR Cryptol. ePrint Arch.
影响因子:
--
通讯作者:
Akshayaram Srinivasan
Akshayaram Srinivasan
中科院分区:
--
文献类型:
--
作者:
Sanjam Garg;R. Ostrovsky;Akshayaram Srinivasan

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我们给出了一个自适应乱码RAM方案的建设。在自适应设置中,客户端首先篡改存储在服务器上的“大型”持久数据库。接下来,客户端可以提供多个自适应和对抗性选择的RAM程序的乱码,这些程序任意地执行和修改存储的数据库。混乱的数据库和混乱的程序只会显示运行时间和计算输出。此外,乱码数据库和乱码程序的大小仅分别在数据库的大小和所执行的程序的运行时间上线性增长(直到多对数因子)。我们构造的安全性基于假设的不经意传输(Cho等人,2017年,任?以前,这种自适应乱码RAM构造仅使用不可识别性混淆或在随机预言模型中已知。作为一个额外的应用程序,我们注意到,这项工作产生的第一个恒定轮安全计算协议的持久RAM程序在恶意设置从标准的假设。以前的作品不支持恶意设置中的持久性。
We give a construction of an adaptive garbled RAM scheme. In the adaptive setting, a client first garbles a “large” persistent database which is stored on a server. Next, the client can provide garbling of multiple adaptively and adversarially chosen RAM programs that execute and modify the stored database arbitrarily. The garbled database and the garbled program should reveal nothing more than the running time and the output of the computation. Furthermore, the sizes of the garbled database and the garbled program grow only linearly in the size of the database and the running time of the executed program respectively (up to poly logarithmic factors). The security of our construction is based on the assumption that laconic oblivious transfer (Cho et al., CRYPTO 2017) exists. Previously, such adaptive garbled RAM constructions were only known using indistinguishability obfuscation or in random oracle model. As an additional application, we note that this work yields the first constant round secure computation protocol for persistent RAM programs in the malicious setting from standard assumptions. Prior works did not support persistence in the malicious setting.
黑盒乱码RAM
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: 10.1007/978-3-319-78375-8_17
发表时间: 2018-04
期刊: IACR Cryptol. ePrint Arch.
影响因子: --
作者:
Fabrice Benhamouda;Huijia Lin
通讯作者: Fabrice Benhamouda;Huijia Lin