[Resource Topic] 2017/404: Short generators without quantum computers: the case of multiquadratics

Welcome to the resource topic for 2017/404

Title:
Short generators without quantum computers: the case of multiquadratics

Authors: Jens Bauch, Daniel J. Bernstein, Henry de Valence, Tanja Lange, Christine van Vredendaal

Abstract:

Finding a short element g of a number field, given the ideal generated by g, is a classic problem in computational algebraic number theory. Solving this problem recovers the private key in cryptosystems introduced by Gentry, Smart-Vercauteren, Gentry-Halevi, Garg-Gentry-Halevi, et al. Work over the last few years has shown that for some number fields this problem has a surprisingly low post-quantum security level. This paper shows, and experimentally verifies, that for some number fields this problem has a surprisingly low pre-quantum security level.

ePrint: https://eprint.iacr.org/2017/404

Talk: https://www.youtube.com/watch?v=wU-VJ_yb4-I

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