Hash function and Digital Signature based on elliptic curve

This paper, present Pizer hash function based on elliptic curve and expander graph. First it describes how a Pizer hash function is used to hash a message. then, it presents the different steps to sign a message, already hash with Pizer hash function, using Elliptic Curve Digital Signature Algorithm (ECDSA). Finally, examples and results have been elaborated under the MATLAB environment and an explication why the hash function is efficient is given. Also we justify the robustness of the hash function.