Comparison of Lightweight Stream Ciphers: MICKEY 2.0, WG-8, Grain and Trivium
Comparison of Lightweight Stream Ciphers: MICKEY 2.0, WG-8, Grain and Trivium Lennart Diedrich1, Patrick Jattke1, Lulzim Murati1, Matthias Senker and Alexander Wiesmaier1;2;3 1 Technische Universit¨atDarmstadt, Germany 2 AGT International, Germany 3 Hochschule Darmstadt, Germany Abstract. In this paper we compare four lightweight stream ciphers, MICKEY 2.0, WG-8, Grain and Trivium, which can be used for data encryption in the Internet of Things. At first we provide a brief overview of each algorithm. This includes their basic functional principle, their different specifications, possible hardware implementations and their complexity. We conclude the overview with a short security evaluation. Finally, we provide a comparison of the algorithms pointing out differences, similarities and their applicability in the Internet of Things. Keywords: MICKEY 2.0, WG-8, Grain, Trivium, comparison, lightweight cryptography, lightweight data encryption, internet of things, IoT 1 Introduction The Internet of Things (IoT) describes a paradigm of networked interconnection, consisting of objects in our everyday life. Mostly, the devices also have an integrated intelligence, which enables the communication with other IoT devices or even with humans. The main building blocks of the IoT, besides of the backend web services, are sensors and actuators. Sensors are used to collect data, for example of the environment (temperature, humidity, traffic etc.) or the personal fitness and health (i.e. pedometer, sleep quality tracker). On the other side there are actuators, which perform an action if they are triggered. Common examples for actuators are (wireless) lights and thermostats. Moreover, there exist devices which act as both, sensor and actuator.
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