Study of a Secure E-lottery scheme based on E-cash

The similarity of E-cash and E-lottery was taken into account to have designed a secure E-cash-lottery scheme by using zero-knowledge proof and blind signature on the basis of applications of the traditional lottery. This E-cash-lottery is characterized with anonymity, double stake resisting, forgery resisting, traceableness and off-line. For lottery players, banks, and lottery delivery to infer the identity of the winners by E-lottery is as difficult as for them to solve discrete logarithm. For lottery players to forge the E-cash or the E-cash-lottery is as difficult as for them to attack the RSA public key signature system. If there exists any repeated spending by using this E-cash- lottery, the bank can certainly determine the identity of the spender. Compared with the traditional lottery, the anonymity and privacy of the E-cash-lottery were preferable.