Design of cryptosystem based on ECC algorithm using hexadecimal values of character

This paper proposes a new approach to encrypt data with new modified cryptosystem based on elliptic curve. This new version utilizes the original Menezes Vanstone cryptosystem. But it has some additional features to cryptosystem´s encryption method. According to the encryption method, first the message is divided into blocks that contain only one character, and then each character is converted to hexadecimal value. A hexadecimal value of each character has two digits. These two digits allow us to express the message as a point in curve. The knowledge of each character´s point need not be sent to the recipient. The paper explains the implementation of encrypting data with new modified cryptosystem based on elliptic curve using VHDL.