Disappearing Cryptography in the Bounded Storage Model
Disappearing Cryptography in the Bounded Storage Model
复制标题
有限存储模型中消失的密码学
DOI：
10.1007/978-3-030-90453-1_13
复制
发表时间：
2021
期刊：
影响因子：
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通讯作者：
Mark Zhandry
中科院分区：
文献类型：
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作者：
Jiaxin Guan;Mark Zhandry
。整体存储，这意味着传输一旦流就消失了，我们第一次提出了在线混淆的概念，从而捕获了在有限的存储模型中消失的目标。在此模型中，VBB安全性的结果，但提案的候选构造是针对较弱的安全性目标，即VGB安全性。无论使用的计算假设如何，在加密的标准模型中都不可能。
. In this work, we study disappearing cryptography in the bounded storage model. Here, a component of the transmission, say a ciphertext, a digital signature, or even a program, is streamed bit by bit. The stream is too large for anyone to store in its entirety, meaning the transmission effectively disappears once the stream stops. We first propose the notion of online obfuscation, capturing the goal of disappearing programs in the bounded storage model. We give a negative result for VBB security in this model, but propose candidate constructions for a weaker security goal, namely VGB security. We then demonstrate the utility of VGB online obfuscation, showing that it can be used to generate disappearing ciphertexts and signatures. All of our applications are not possible in the standard model of cryptography, regardless of computational assumptions used.
DOI：
10.1007/978-3-030-77886-6_17
发表时间：
2020-05
期刊：
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影响因子：
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作者：
P. Ananth;R. L. Placa
通讯作者：
P. Ananth;R. L. Placa