A New Hybrid Cryptography Technique in Wireless Sensor Network
Alakananda Tripathy1, Sateesh Kumar Pradhan2, Alok Ranjan Tripathy3, Ajit Kumar Nayak4
1Alakananda Tripathy, Department of Computer Science and Engineering, S’O’A Deemed to be University, Bhubaneswar, India.
2Sateesh Kumar Pradhan, Department of Computer Science and Applications, Utkal University, Bhubaneswar, India.
3Alok Ranjan Tripathy, Department of Computer Science, Ravenshaw University, Cuttack, India.
4Ajit Kumar Nayak, Department of CSIT, S’O’A Deemed to be University, Bhubaneswar, India
Manuscript received on 02 July 2019 | Revised Manuscript received on 05 July 2019 | Manuscript published on 30 August 2019 | PP: 121-131 | Volume-8 Issue-10, August 2019 | Retrieval Number: I8736078919/2019©BEIESP | DOI: 10.35940/ijitee.I8736.0881019
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The wireless sensor network is a large number of tiny nodes installed in insecure environment for monitoring, gathering and transferring data and are prone to security threats for its limited resources. In order to transmit the data and to protect from different attacks in the network, security is maintained. To achieve confidentiality, authenticity and authorization of data which secure the data from different attacks cryptographic algorithm were used. The number of keys used in the cryptographic algorithm determines the security of the data. Cryptographic algorithms are broadly classified into two types symmetric cryptography and asymmetric cryptography. In the symmetric key cryptographic algorithm, a secret key is shared in the network and in asymmetric key cryptographic algorithm two keys are used for data security. In wireless sensor network, symmetric key cryptography required more storage to store the key among all the nodes of the network and in asymmetric key cryptography more computation time is require for the data encryption and decryption. To avoid memory and computation overhead we proposed a hybrid cryptosystem to handle the security in the wireless sensor network. Initially shared key is exchanged among nodes using ECC which is a public key algorithm. Data is encrypted and decrypted using RC4 symmetric key algorithm. Various performance measures such as time taken for encryption and decryption process and memory needed for storing cipher text data. The proposed model shows faster encryption of data and takes less memory for key storage as compared to the traditional approach.
Keywords: Security, Cryptography, Symmetric key, Cipher text, Encryption, Decryption.
Scope of the Article: Wireless Sensor Network