[Resource Topic] 2012/388: The Arithmetic Codex

Welcome to the resource topic for 2012/388

Title:
The Arithmetic Codex

Authors: Ignacio Cascudo, Ronald Cramer, Chaoping Xing

Abstract:

We introduce the notion of {\em arithmetic codex}, or {\em codex} for short. It encompasses several well-established notions from cryptography (arithmetic secret sharing schemes, i.e., enjoying additive as well as multiplicative properties) and algebraic complexity theory (bilinear complexity of multiplication) in a natural mathematical framework. Arithmetic secret sharing schemes have important applications to secure multiparty computation and even to {\em two}-party cryptography. Interestingly, several recent applications to two-party cryptography rely crucially on the existing results on ``{\em asymptotically good} families’’ of suitable such schemes. Moreover, the construction of these schemes requires asymptotically good towers of function fields over finite fields: no elementary (probabilistic) constructions are known in these cases. Besides introducing the notion, we discuss some of the constructions, as well as some limitations.

ePrint: https://eprint.iacr.org/2012/388

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