Elliptic Curve Cryptography Modified Hill Cipher Dependent on Circulant Matrix
Information security is the most important aspect of digital data communications. This demands an effective
cryptographic algorithm to secure these information from an unauthorized access. This paper is aiming to apply a
modification on the Elliptic Curve Cryptography which makes computations easier, faster and improve the performances of
security. Hill Cipher with Circulant Matrix has been used to share the secret key and mapping the message instead of
applying Koblitz Encoding method. In this paper, Image encryption and decryption processes has been implemented using
the proposed new Elliptic Curve Cryptography Modified Hill Cipher algorithm. Security analysis was performed on the
algorithm to make an evaluation.
Keywords - Circulant Matrix, Elliptic curve cryptography, Hill cipher, Security analysis.