Energy Efficiency Comparison with Cipher Strength of AES and Rijndael Cryptographic Algorithms in Mobile Devices

摘要

Currently, mobility is highly important. Everyone has mobile devices: not only laptops, but also smart phones, pocket PCs, GPS receivers, etc. Mobile/wireless devices are increasingly used not only for communication, but also for other critical applications such as data storage. However, due to small size they can be easily lost or stolen. Cryptography is used for securing information stored in mobile devices. Usage time of a mobile device is constrained by its most critical resource - battery. The user must be aware of the energy consumption characteristics of the applications and services he/she uses on the mobile device [1]. Encryption algorithms, which play a main role in information security systems, consume a significant amount of computing resources and battery energy, which are very limited. High energy consumption has a direct impact on the battery life, and, consequently, on the duration and extent of the user's mobility. Thus, the reduction of energy consumption of a portable system is of the primary importance [2].