Rivest and Shamir presented two simple micropayment schemes, “PayWord” and “MicroMint,” for making small purchases over the Internet [14]. Recently, Adachi et al. have poi...
Electronic payment systems have gradually become an important issue nowadays because of the popularity and importance of electronic commerce on the Internet. Security and convenie...
Abstract. Electronic payment systems for wireless devices need to take into account the limited computational and storage ability of such devices. Micropayment schemes seem well su...