This paper introduces a mechanism for establishing policies for electronic commerce in a uni ed and secure manner. A commercial policy can be viewed as the embodiment of a contrac...
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...
Computational models of trust have been proposed for use in ubicomp environments for deciding whether to allow customers to pay with an e-purse or not. In order to build trust in ...
Mobile Phone has been widely used in the world and adopted in different application areas involved with SMS has been evolved for downloading logo, ring-tones, advertisement, secur...
Protection of digital multimedia content has become an increasingly important issue for content owners and service providers. As watermarking is identified as a major technology t...