November 21, 2025
Brumley presents at OpenSSL Conference
Billy Brumley, Kevin O’Sullivan Endowed Professor in Cybersecurity, presented “Constant-Time BIGNUM Is Bollocks” at the OpenSSL Conference 2025, Oct. 9, in Prague. Brumley discussed the challenges of designing and implementing a truly constant-time arbitrary-precision integer arithmetic software library, why the cryptographer’s mantra “just make it constant time” is a pipe dream, and radical alternative approaches. It was noted as the second most popular talk at the conference.
