Power consumption for security on mobile devices

In order to avoid intruder steals sensitive information over the network, one thing that we may consider is to encrypt the sensitive information beside install an antivirus on the devices or networks. The problem is the strong encryption algorithm is very complex and required intensive computational that need huge power consumption and others resources in mobile devices. Furthermore, people have been using mobile devices to transfer the important information or doing commercial transactions. In this case, security is an important issue to protect the sensitive information, but in the other hand, the portable or mobile devices powered by battery that have limitation in battery lifetime. Choosing the suitable encryption-decryption algorithm to implement in the mobile devices is one of the important decisions to secure exchanging sensitive information with constraining of this source of power. In this research, We evaluate the power consumption of four Advanced Encryption Standard (AES) finalist: RC6, Serpent, Mars, and twofish with respect to the size of file using Joulemeter, PassMark BatteryMon, and Wattch. Our research showed that the Twofish algorithm is the least amount of energy to encrypt the data and the Serpent algorithm is the most need energy to encrypt the data.