Wireless Energy Harvesting Sensor Networks -Myassignmenthelp.Com

Question: Discuss About The Wireless Energy Harvesting Sensor Networks? Answer: Introducation Encryption is a process of converting a particular information or data into a code in order to prevent unauthorized access to the data. Encryption helps in limiting the access to a particular data only to registered users. There are different encryption standards that are used to protect the privacy and confidentiality of the data. (Biham Shamir, 2012.) The three data encryption standards for WiMAX networks are 3DES or triple data encryption standard, AES and RSA. These management standards are elaborated in the following table. 3DES AES RSA 3DES or triple data encryption method uses three different keys of 56-bit length for a high-level encryption. In this encryption standard, a symmetric key block cipher uses the traditional DES cipher algorithm three times for each data block. The key size of the triple DES is large to ensure additional amount of security while encryption of a data. These three keys are also known as bundle keys and consists of 56 bits each. The major advantage of triple DES is that, the size of the key length is fixed. Triple DES helps in encrypting the data three times. The different keys of triple DES is known as k1, k2 and k3. This technology is based on ANSIX9.52 standard. 3DES is a bit slower in performance as it uses the 3 different phases for encrypting a particular data. It is one of the Vital encryption standard for WiMax network. 3DES is however, not much in use due to the evolution of AES (Singh, 2013) AES or advanced encryption standard provides the support and a better encryption method with the use of 128-bit, 192-bit or 256-bit encryption keys. This encryption standard is a symmetric block cipher (Karthik Muruganandam, 2014). This is the most used algorithm used for encryption of data. This algorithm has been developed as a successor for DES or data encryption standard algorithm (Daemen Rijmen, 2013.). AES encryption standard is a method of converting raw information into unreadable information. AES was built from CCMP. IT is much faster than 3DES and can be easily implemented using very less memory. However, unlike 3DES, it requires a dedicated processor and therefore 3DES remains one of the vital tools for WiMax network RSA or Rivest Shamir Adleman is a public key encryption standard used to encrypt a message using a public key, while the message is decrypted using a private key. This is an asymmetric key algorithm as both the keys are used for encryption and decryption This is an effective standard of encryption as two large prime numbers are used for generating the encryption and decryption key of this encryption algorithm and therefore it becomes very difficult to crack the encryption (Nagar Alshamma, 2012, March). RSA is rarely used in WiMax unlike 3DES and AES. WPAN or wireless personal area network is a network of interconnecting devices providing a wireless connection to the devices. WPAN technologies are mainly used for short range communications, low power consumption, low cost and are very beneficial for setting up small personal networks. The two examples of WPAN technology include Bluetooth and ZigBee. Blurtooth is a widely used WPAN technology. Bluetooth is a standard for short-range wireless interconnection of mobile and economics devices. Zigbee on other hand is simpler and less expensive than Bluetooth. The primary advantage of Zigbee is its ease of installation, data transfer and low cost. However, there are certain security concerns that are associated with these WPAN technologies. The security challenges of WPAN and Bluetooth are elaborated in the following paragraphs- Bluetooth The security threats associated with Bluetooth technology in WPAN are listed below- 1) Bluebugging: In this security threat where an hacker breaks into a Bluetooth network and can exploit the network without the knowledge of the owner. 2) Blue jacking: In this security thret, the attacker sends harmful messages to the sender that could be opened up automatically and install the malicious contents. 3) Bkuesnarfing: the attacker gets access into the nwtwork and gets unauthorized access to the data present (Minar Tarique, 2012). ZigBee The security concerns associated with ZigBee are listed below- 1) A hacker may break into a ZigBee network and gain physical access to the data and the encryption key of the device thus revealing the confidential information. 2) Another major risk associated with this attack is imitating a node of a network in order to gain access to the data (Zillner Strobl, 2015). The process of yielding or harvesting the energy from external sources is known as energy harvesting. The different external sources of energy harvesting include solar energy, wind energy, hydropower energy and so on. Efficient energy harvesting methodologies are explored in order to eliminate the limitation of energy concerning the development of Wireless sensor networks or WSNs. Energy harvesting is necessary in order to overcome the problem faced sue to the depletion of sensor node in WSN, due to which the network fails to perform its responsibility in a proper way (Shaikh Zeadally, 2016). Energy harvesting methodology allows the wireless sensor nodes to acquire continuous energy from the nature and mad made phenomenon. Therefore, the process of energy harvesting can help in ascertaining a promising future in the field of wireless network by reducing the use of conventional energy to a considerable amount (Ulukus et al., 2015). The different energy harvesting techniques are elaborated below (Shaikh Zeadally, 2016) 1) Radio Frequency based Energy harvesting: This energy harvesting techniques deals with the conversion of radio waves into DC power energy 2) Solar energy harvesting: there is abundance of solar energy and therefore proper harvesting techniques can be used for impending the problems associated with wireless sensor networks. 3) Thermal Energy: This method of energy harvesting converts the heat energy into electrical energy. The method used is Seebeck effect. 4) Wind Energy harvesting: This energy can be harvested for generation of electricity 5) Hydro energy harvesting: The energy or strength of falling water can be harvested for harnessing the energy. References Biham, E., Shamir, A. (2012).Differential cryptanalysis of the data encryption standard. Springer Science Business Media. Daemen, J., Rijmen, V. (2013).The design of Rijndael: AES-the advanced encryption standard. Springer Science Business Media. Karthik, S., Muruganandam, A. (2014). Data Encryption and Decryption by using Triple DES and performance analysis of crypto system.International Journal of Scientific Engineering and Research, 24-31. Minar, N. B. N. I., Tarique, M. (2012). Bluetooth security threats and solutions: a survey.International Journal of Distributed and Parallel Systems,3(1), 127. Nagar, S. A., Alshamma, S. (2012, March). High speed implementation of RSA algorithm with modified keys exchange. InSciences of Electronics, Technologies of Information and Telecommunications (SETIT), 2012 6th International Conference on(pp. 639-642). IEEE. Shaikh, F. K., Zeadally, S. (2016). Energy harvesting in wireless sensor networks: A comprehensive review.Renewable and Sustainable Energy Reviews,55, 1041-1054. Singh, G. (2013). A study of encryption civil-engineering (RSA, DES, 3DES and AES) for information security.International Journal of Computer Applications,67(19). Ulukus, S., Yener, A., Erkip, E., Simeone, O., Zorzi, M., Grover, P., Huang, K. (2015). Energy harvesting wireless communications: A review of recent advances.IEEE Journal on Selected Areas in Communications,33(3), 360-381. Zillner, T., Strobl, S. (2015). ZigBee exploited: The good the bad and the ugly.