A new modified cryptosystem based on Menezes Vanstone elliptic curve cryptography algorithm that uses characters´ hexadecimal values

This paper proposes a new approach to encrypt data (message) with new modified version of Menezes Vanstone cryptosystem based on elliptic curve. This new version basically utilizes the original Menezes Vanstone cryptosystem but we added additional features to cryptosystem´s encryption method. According to our encryption method, firstly the message is divided into blocks that contain only one character, and then each character is converted to hexadecimal format. Hexadecimal values of each character have two digits. These two digits allow us to express the message as a point. Thus knowledge of each character´s point does not have to be sent to recipient. The paper explains in detail its implementation in C++.