WebMay 4, 2024 · Abstract: Correlated secret randomness is a useful resource for threshold cryptography and secure multiparty computation. A pseudorandom correlation generator … WebGeneralized pseudorandom secret sharing (PRSS). Linear correlations serve as an important resource for MPC protocols and beyond. PRSS enables secure generation of many pseudorandom instances of such correlations without interaction, given replicated seeds of a pseudorandom function. We extend the PRSS technique of Cramer et al. (TCC 2005) for ...
How to Fix Two RSA-Based PVSS Schemes—Exploration and …
WebAug 10, 2024 · In the first construction, based on homomorphic secret sharing from ring-LWE [ 12, 14, 16, 18 ], the seed expansion can be at most quadratic due to the use of a pseudorandom generator with algebraic degree 2. In concrete terms, the seeds are several GBs long and can only be expanded by around 6x, giving far too much overhead for most … WebNov 17, 2024 · We customarily use pseudorandom generators that expand a given seed, assumed "random", into an arbitrarily long sequence of bytes that are indistinguishable from randomness... as long as attackers have finite computing resources that … orisha drumming
Efficient Pseudorandom Correlation Generators From Ring …
WebApr 15, 2024 · Since their introduction in [], pseudorandom functions (PRFs) have played a central role in modern cryptography and numerous extensions have been proposed.Of particular interest is the notion of constrained pseudorandom functions (CPRFs), introduced concurrently in [5, 9, 25].Recall that a PRF is a family of keyed functions \(\{F_k\}_{k \in … WebWe propose and analyze a simple strategy for constructing 1-key constrained pseudorandom functions (CPRFs) from homomorphic secret sharing. In the process, we … WebWe construct homomorphic secret sharing for branching programs with negligible correctness error and supporting exponentially large plaintexts, with security based on the decisional composite residuosity (DCR) assumption. {Correlated pseudorandomness. how to write om in hindi in ms word