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Electronic Colloquium on Computational Complexity

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REPORTS > AUTHORS > JOAO RIBEIRO:
All reports by Author Joao Ribeiro:

TR21-090 | 14th June 2021
Divesh Aggarwal, Eldon Chung, Maciej Obremski, Joao Ribeiro

On Secret Sharing, Randomness, and Random-less Reductions for Secret Sharing

Secret-sharing is one of the most basic and oldest primitives in cryptography, introduced by Shamir and Blakely in the 70s. It allows to strike a meaningful balance between availability and confidentiality of secret information. It has a host of applications most notably in threshold cryptography and multi-party computation. All known ... more >>>


TR19-173 | 28th November 2019
Divesh Aggarwal, Siyao Guo, Maciej Obremski, Joao Ribeiro, Noah Stephens-Davidowitz

Extractor Lower Bounds, Revisited

Revisions: 1

We revisit the fundamental problem of determining seed length lower bounds for strong extractors and natural variants thereof. These variants stem from a ``change in quantifiers'' over the seeds of the extractor: While a strong extractor requires that the average output bias (over all seeds) is small for all input ... more >>>




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