Mathematics of Computation, Vol. 50, No. 182 (Apr., 1988), pp. 431-448 (18 pages) Let $A$ be an $n \times n$ banded block Toeplitz matrix of bandwidth $k$ with $m ...

Cryptographic algorithms lie at the heart of modern information security, and substitution box (S‐box) design is a critical component in achieving robust encryption. S‐boxes provide the nonlinearity ...

Columbia University researchers have developed a novel algorithm that can block rogue audio eavesdropping via microphones in smartphones, voice assistants, and connected devices in general. The ...

The InLink kiosks installed throughout the UK were meant to replace payphones and provide free calls, ultra-fast WiFi and phone charging. But it wasn't long before they became a hotbed for drug ...