M. Abd-Rabbou

HWAX: Metric-Hardness-Based Lightweight Block Cipher for Postquantum IoT Security on 32-bit Microcontrollers

Every lightweight cipher standardized to date uses a 128-bit key, which Grover’s algorithm reduces to 64-bit postquantum security—below the NIST postquantum threshold. We present <bold>HWAX</bold>, a 128-bit block cipher with a 256-bit key designed for the ARM Cortex-M4 pipeline. HWAX combines three table-free layers:...

Bidirectional quantum teleportation through an open Heisenberg XYZ with Dzyaloshinskii–Moriya interaction channel driven by DRAG pulses

Probing quantum scrambling and chaos in curved spacetime via Unruh-DeWitt detectors

We introduce a local operational protocol for measuring quantum information scrambling in a curved spacetime background. In this framework, two Unruh-DeWitt (UDW) detectors, coupled to a massless conformally coupled scalar field in the Hartle–Hawking vacuum of the non-rotating (2+1)-dimensional Banados–Teitelboim–Zanel...