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Electronic Colloquium on Computational Complexity

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REPORTS > KEYWORD > INFORMATION THEORETIC SECURITY:
Reports tagged with Information Theoretic Security:
TR16-078 | 9th May 2016
Gregory Valiant, Paul Valiant

Information Theoretically Secure Databases

We introduce the notion of a database system that is information theoretically "secure in between accesses"--a database system with the properties that 1) users can efficiently access their data, and 2) while a user is not accessing their data, the user's information is information theoretically secure to malicious agents, provided ... more >>>


TR17-038 | 23rd February 2017
Benny Applebaum, Barak Arkis, Pavel Raykov, Prashant Nalini Vasudevan

Conditional Disclosure of Secrets: Amplification, Closure, Amortization, Lower-bounds, and Separations

Revisions: 1

In the \emph{conditional disclosure of secrets} problem (Gertner et al., J. Comput. Syst. Sci., 2000) Alice and Bob, who hold inputs $x$ and $y$ respectively, wish to release a common secret $s$ to Carol (who knows both $x$ and $y$) if only if the input $(x,y)$ satisfies some predefined predicate ... more >>>


TR18-033 | 16th February 2018
Benny Applebaum, Thomas Holenstein, Manoj Mishra, Ofer Shayevitz

The Communication Complexity of Private Simultaneous Messages, Revisited

Revisions: 2

Private Simultaneous Message (PSM) protocols were introduced by Feige, Kilian and Naor (STOC '94) as a minimal non-interactive model for information-theoretic three-party secure computation. While it is known that every function $f:\{0,1\}^k\times \{0,1\}^k \rightarrow \{0,1\}$ admits a PSM protocol with exponential communication of $2^{k/2}$ (Beimel et al., TCC '14), the ... more >>>


TR18-208 | 27th November 2018
Benny Applebaum, Prashant Nalini Vasudevan

Placing Conditional Disclosure of Secrets in the Communication Complexity Universe

Revisions: 2

In the *Conditional Disclosure of Secrets* (CDS) problem (Gertner et al., J. Comput. Syst. Sci., 2000) Alice and Bob, who hold $n$-bit inputs $x$ and $y$ respectively, wish to release a common secret $z$ to Carol (who knows both $x$ and $y$) if and only if the input $(x,y)$ satisfies ... more >>>




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