arXiv subjects

Xisen Tian

Publications and source records attributed to Xisen Tian.

2 recordsLinked to original sources

arXiv2025

Key Establishment in the Space Environment

As reliance on space systems continues to increase, so does the need to ensure security for them. However, public work in space standards have struggled with defining security protocols that are well tailored to the domain and its risks. In this work, we investigate various space networking paradigms and security approaches, and identify trade-offs and gaps. Furthermore, we describe potential existing security protocol approaches that fit well into the space network paradigm in terms of both functionality and security. Finally, we establish future directions for enabling strong security for space communication.

cs.CR↗

arXiv2015

Parallel sparse interpolation using small primes

To interpolate a supersparse polynomial with integer coefficients, two alternative approaches are the Prony-based "big prime" technique, which acts over a single large finite field, or the more recently-proposed "small primes" technique, which reduces the unknown sparse polynomial to many low-degree dense polynomials. While the latter technique has not yet reached the same theoretical efficiency as Prony-based methods, it has an obvious potential for parallelization. We present a heuristic "small primes" interpolation algorithm and report on a low-level C implementation using FLINT and MPI.

cs.SC↗