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Wireless networks play critical roles in present work, home, and public places, so the needs of protecting of such networks are increased. Encryption algorithms play vital roles in information systems security. Those algorithms consume a significant amount of computing resources such as CPU time, memory, and battery power. CPU and memory usability are increasing with a suitable rates, but battery technology is increasing at slower rate. The problem of the slower increasing battery technology forms "Battery gap". The design of efficient secure protocols for wireless devices from the view of battery consumption needs to understand how encryption techniques affect the consumption of battery power with and without data transmission.
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