An Interest Countable and Divisible E-cash Scheme Based on HECC

This paper proposes a piratical interest countable and divisible e-cash scheme based on HECC. A very simple method instead of complex binary-tree presentation technique is used to construct a divisible e-cash system, thus making the system efficient. The interest of e-cash from drawing to payment will be calculated in the scheme, and this method avoids the loss of interest in the period. Compared with previous RSA, Elgamal and EEC based e-cash system, HECC possess fewer bits achieving the same security level as other public key cryptosystems. So our system requires much shorter security parameter size and it also scales better.