Elliptic Curve Layered: A Secure Polyalphabetic Vignere Cryptographic Algorithm for Textual Data
Deepika Bhatia, Meenu Dave · Journal of scientific research · 2021
Digital content is unsecured during public data transmission.Cryptography is a technique to provide data security to transfer user's information securely in a cloud computing environment without the intervention of a third party.Cryptographic methods provide data security and have become important nowadays to enhance the security of this digital data.Sensitive data and information when exchanged using the cloud services, lead to eavesdropping.Unauthorized access leads to data breach and various types of security attacks.A distributed network environment is very critical maintaining the confidentiality of the user's data.Cloud services provide encryption and decryption of data while transfer using the TLS protocol.But to use this feature a trusted third-party source is needed.Thus, data security gets affected in such a cloud infrastructure.This paper discusses various issues with different classical cryptography techniques and proposed a hybrid approach using symmetric and asymmetric key algorithm.A new combination of Vignere cipher and Elliptic curve is proposed and implemented and the result is analysed based upon Friedman test and Index of Coincidence.The results show that the novel method provides double layer security to user's data and information.More randomness and confusion have been added in the resulted ciphertext using the new scheme.