Samuel Asferaw Demilew
Research Subjects
Samuel Asferaw Demilew has a total of 3 co-authors. Here are the top co-authors by number of shared publications:
- Kula Kekeba Tune
Department of Software Engineering, College of Engineering, Addis Ababa Science and Technology University, Addis Ababa 16417, Ethiopia
1 shared publication - Nahom Gebeyehu Zinabu
Addis Ababa Science and Technology University (AASTU)
1 shared publication - Yihenew Wondie
African Railway Center of Excellence Addis Ababa Institute of Technology, Addis Ababa University, King George VI St Addis Ababa, Addis Ababa 1000, Ethiopia
1 shared publication
Latest Publications
- Open Access
- 10 May 2026
- Published by Institute of Advanced Engineering and Science in Indonesian Journal of Electrical Engineering and Computer Science
- Vol. 42 (2)
GRAND-stream: A galois-ring-based lightweight stream cipher for battery-limited internet of things (IoT) devices
GRAND-Stream is a new lightweight stream encryption framework based on arithmetic over Galois rings that targets battery-constrained internet of things (IoT) devices. Unlike traditional LFSR/NLFSR-based designs, GRAND-stream uses ring-squaring-induced nonlinearity and inter component polynomial coupling to improve algebraic complexity while keeping compact implementation qualities. We give an explicit parameterized construction for Z2 n[x]/(f(x)), specify its state updating and output functions, and investigate algebraic degree growth and diffusion behavior. The security arguments are heuristic, based on explicitly stated assumptions about the difficulty of solving quadratic systems over Galois rings. Energy per bit, cycle count, and gate complexity are estimated using an analytical performance model. Although initial findings show potential compactness, more research is needed for thorough cryptanalysis and empirical validation on embedded devices. Therefore, GRAND-stream should be considered a structured algebraic design concept that needs more assessment.
- 10 May 2026
- Published by Institute of Advanced Engineering and Science in Indonesian Journal of Electrical Engineering and Computer Science
- Vol. 42 (2)
Open AccessGRAND-stream: A galois-ring-based lightweight stream cipher for battery-limited internet of things (IoT) devices
GRAND-Stream is a new lightweight stream encryption framework based on arithmetic over Galois rings that targets battery-constrained internet of things (IoT) devices. Unlike traditional LFSR/NLFSR-based designs, GRAND-stream uses ring-squaring-induced nonlinearity and inter component polynomial coupling to improve algebraic complexity while keeping compact implementation qualities. We give an explicit parameterized construction for Z2 n[x]/(f(x)), specify its state updating and output functions, and investigate algebraic degree growth and diffusion behavior. The security arguments are heuristic, based on explicitly stated assumptions about the difficulty of solving quadratic systems over Galois rings. Energy per bit, cycle count, and gate complexity are estimated using an analytical performance model. Although initial findings show potential compactness, more research is needed for thorough cryptanalysis and empirical validation on embedded devices. Therefore, GRAND-stream should be considered a structured algebraic design concept that needs more assessment.