Data Encryption using Advanced Encryption Standard with Key Generation by Elliptic Curve Diffie-Hellman (original) (raw)
2017, International Journal of Security and Its Applications
In today's era ubiquitous computing is worldwide adopted. Internet is the main root for providing a ubiquitous network for communication between different people across the world, such communications can be through a wireless channel or wired channel that helps in getting messages or confidential information exchanged between different groups of people. Data security is of utmost importance because of wireless communications on insecure network. So the concept of cryptography is emerged which is nothing but known as an art of writing a secret code and it provide diverse set of services for protecting data over network such as authentication, confidentiality, non-repudiation and integrity. Cryptography offers wide range of algorithms which can help to guard communications over an insecure network such as symmetric encryption techniques which uses one key for encryption and decryption. For a symmetric cipher security can be compromised as it uses a single key, with this an advantage comes out while using an asymmetric security technique that makes use of a pair of keys to secure communications over unsafe channels. In this paper the positive characteristics of both the techniques discussed above are taken and a hybrid approach is used to guard messages on timid wireless medium. AES which is known as symmetric algorithm is combined with ECDH algorithm that is asymmetric by nature and is an amalgam of ECC and Diffie-Hellmananonymous key agreement protocol. Different text files are taken as input to the model with varying sizes. Encryption and decryption is performed using Advance encryption standard (AES) whereas ECDH will help in securing the communication for a session set up between client and server by generating key for AES. Also Diffie-Hellman will provide security by establishing a shared secret between client and server after successful key agreement. At last analysis of proposed model is done on the basis of different metrics like storage, encryption time, decryption time, correlation and avalanche effect. Proposed approach has been proven effective in reducing the gaps discovered in the present literature.
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