Reliable Encrypted Matrix Inversion - Application in System Identification and Beyond

Rising Star Symposium on Cyber-Physical Systems Security, Resilience, and Privacy https://sites.google.com/nyu.edu/ieee-css-tcsp-symp/home By Janis Adamek, TU Dortmund University https://arxiv.org/abs/2410.20575 This talk presents a reliable algorithm for calculating the general inverse of an encrypted matrix. More precisely, we exploit encryption-friendly iterative algorithms for matrix inversions and present reliable initializations as well as certificates for the achieved accuracy without compromising the privacy of the provided I/O-data.