s the popularity of wireless networks increases, so does the need to protect them. Encryption algorithms play a main role in information security systems. On the other side, those algorithms consume a significant amount of computing resources such as CPU time, memory, and battery power. This paper illustrates the key concepts of security, wireless networks, and security over wireless networks. Wireless security is demonstrated by applying the common security standards like (802.11 WEP and 802.11i WPA,WPA2) and provides evaluation of six of the most common encryption algorithms on power consumption for wireless devices namely: AES (Rijndael), DES, 3DES, RC2, Blowfish, and RC6. A comparison has been conducted for those encryption algorithms at different settings for each algorithm such as different sizes of data blocks, different data types, battery power consumption, date transmission through wireless network and finally encryption/decryption speed. Experimental results are given to demonstrate the effectiveness of each algorithm.

Encryption algorithms are known to be computationally intensive.They play a main role in information security systems. On the other side, those algorithms consume a significant amount of computing resources such as CPU time, memory, and battery power. This paper tries to present a fair comparison between the most common and used algorithms in data encryption field according to power consumption. It provides evaluation of six of the most common encryption algorithms namely: AES (Rijndael), DES, 3DES, RC2, Blowfish, and RC6. A comparison has been conducted for those encryption algorithms at different settings for each algorithm such as different sizes of data blocks, different data types, and finally encryption/decryption speed. Experimental results are given to demonstrate the effectiveness of each algorithm.

the increasing of wireless systems provides malicious entities greater incentives to step up their efforts to gain unauthorized access to the information being exchanged over the wireless link. As the world becomes more dependent on wireless networks, it needs to improve the ways that protect them. Security is important for wireless networks, mainly because the communications signals are openly available as they propagate through the air. The security settings can be different in many factors, but the main factors are the choice of ciphers used to provide security functions, the key length, and the number of operational rounds, packet size, and data types. These factors also have a significant impact on the energy consumption for providing security. The design of energy efficient secure protocols for wireless devices needs to understand how encryption affects the consumption of battery power with and without data transmission. The major contributions of this paper are energy-security trades off then, some suggestions for design of secure communications systems. This paper illustrates the key concepts of security, wireless networks, and security over wireless networks. Wireless security is demonstrated by applying the common security standards like (802.11 WEP and 802.11i WPA, WPA2) and provides evaluation of six of the most common encryption algorithms on power consumption for wireless devices namely: AES (Rijndael), DES, 3DES, RC2, Blowfish, and RC6. Experimental results are given to demonstrate the effectiveness of each algorithm.

as the importance and the value of exchanged data over the Internet or other media types are increasing, the search for the best solution to offer the necessary protection against the data thieves' attacks. Encryption algorithms play a main role in information security systems. On the other side, those algorithms consume a significant amount of computing resources such as CPU time, memory, and battery power. But Resources in the wireless environment are limited. There is limited battery power available. Technologies such as CPU and memory are increasing and so is their need for power, but battery technology is increasing at a much slower rate, forming a "battery gap". Because of this, battery capacity plays a major role in the usability of the devices. The increasing demand for services on wireless devices has pushed technical research into finding ways to overcome these limitations. This paper provides evaluation of six of the most common encryption algorithms namely: AES (Rijndael), DES, 3DES, RC2, Blowfish, and RC6. We examine a method for analyzing trade-offs between energy and security. We suggest approach to reduce the energy consumption of security protocols. A comparison has been conducted for those encryption algorithms at different settings for each algorithm such as different sizes of data blocks, different data types, battery power consumption, different key size and finally encryption/decryption speed.

Abstract-Security in wireless networks is of paramount importance. Due to the broadcast nature of the wireless radio signals, wireless networks are implicitly vulnerable to several network attacks. Anyone within the wireless transmission range of a device (including malicious users or attackers) is able to passively listen to or eavesdrop on the signals and could potentially access information from the signals. It is also possible to actively transmit signals that can attack the network. Encryption algorithms play good roles in information security systems (ISS). Those algorithms consume a significant amount of computing resources such as CPU time, memory, and battery power. Wireless devices are powered by a battery which is a very limited resource. It implicitly says that the power of computing will grow exponentially. However, the capacity of batteries is growing linearly, and this introduces a "power gap" which is the difference between the power required by computing and the battery capacity. Thus, battery power tends to be a very seriously limited resource for small wireless devices, and a security protocol should utilize energy to the minimum extent possible. This aspect is the primary focus of this dissertation. This paper illustrates the key concepts of security, wireless networks, and security over wireless networks. It provides evaluation of six of the most common encryption algorithms on power consumption for wireless devices A comparison has been conducted for those encryption algorithms at different settings for each algorithm such as different sizes of data blocks, different data types, battery power consumption Index Terms-Computer security, wireless network, ad hoc wireless LANs, Basic Service Set (BBS), Cryptographic algorithms