Cryptographic energy costs are assumable in ad hoc networks

The performance of symmetric and asymmetric cryptography algorithms in small devices is presented. Both temporal and energy costs are measured and compared with the basic functional costs of a device. We demonstrate that cryptographic power costs are not a limiting factor of the autonomy of a device and explain how processing delays can be conveniently managed to minimize their impact. Copyright © 2009 The Institute of Electronics, Information and Communication Engineers.