All reports by Author Raghu Meka:

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TR19-079
| 28th May 2019
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Arnab Bhattacharyya, Philips George John, Suprovat Ghoshal, Raghu Meka#### Average Bias and Polynomial Sources

Revisions: 2

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TR18-200
| 29th November 2018
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Ashutosh Kumar, Raghu Meka, Amit Sahai#### Leakage-Resilient Secret Sharing

Arnab Bhattacharyya, Philips George John, Suprovat Ghoshal, Raghu Meka

We identify a new notion of pseudorandomness for randomness sources, which we call the average bias. Given a distribution $Z$ over $\{0,1\}^n$, its average bias is: $b_{\text{av}}(Z) =2^{-n} \sum_{c \in \{0,1\}^n} |\mathbb{E}_{z \sim Z}(-1)^{\langle c, z\rangle}|$. A source with average bias at most $2^{-k}$ has min-entropy at least $k$, and ... more >>>

Ashutosh Kumar, Raghu Meka, Amit Sahai

In this work, we consider the natural goal of designing secret sharing schemes that ensure security against a powerful adaptive adversary who may learn some ``leaked'' information about all the shares. We say that a secret sharing scheme is $p$-party leakage-resilient, if the secret remains statistically hidden even after an ... more >>>