Energy cost analysis of IPSec on handheld devices

摘要: We analyze the computation overhead of IP security protocol (IPSec) on a handheld device. design experiments to quantify energy consumed by individual components in IPSec. then experiment with several measures which can potentially cut consumption without compromising security. Our results show that replacing 3DES Advanced Encryption Standard as encryption algorithm, total is reduced up 38%. On other hand, MD5 and SHA-1 consume about same amount for message authentication, makes more preferred because its known higher strength against birthday attacks. also find power-saving mode wireless LAN interface does not reduce (and may even increase) cost despite substantial network idle time. Finally, we data compression option must be used carefully. When sending from device, lossless IPSec actually increase until bandwidth drops down 2 Mbps or lower. However, found save when device receives compressible under normal bandwidths. This result suggests dynamically changed between transmission reception.