Thursday, January 13, 2022

Thursday, January 13, 2022 — 11:30 to 11:30 AM EST

Title: A New Adaptive Attack on SIDH

Speaker: Valerie Gilchrist Affiliation: University of Waterloo Zoom: Please email Jesse Elliott

Abstract:

The SIDH key exchange is the main building block of SIKE, the only isogeny based scheme involved in the NIST standardization process. In 2016, Galbraith et al. presented an adaptive attack on SIDH. In this attack, a malicious party manipulates the torsion points in his public key in order to recover an honest party's static secret key, when having access to a key exchange oracle.

Thursday, January 13, 2022 — 1:00 PM EST

Title: Crystal invariant theory and geometric RSK

Speaker: Gabriel Frieden Affiliation:

Université du Québec à Montréal (UQAM)

Zoom: Contact Olya Mandelshtam

Abstract:

The original problem of classical invariant theory was to describe the invariants of SL_m acting on a polynomial ring in an m \times n matrix of variables. One way to solve this problem is to consider the polynomial ring as a GL_m \times GL_n representation, and decompose this representation into its irreducible components.

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