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Third generation (3G) mobile systems offer true broadband data transmission and many multimedia services are flourishing on them. Hence, 3G transmission security has become a popular issue. Recently, Dimitriadis and Polemi proposed a lightweight IDM3G protocol for mutual authentication between users and their service providers. However, many multimedia services require safeguards during transmission...
It is impractical to use traditional access control mechanisms to design a digital content access control mechanism for an organization since even a role-based access control mechanism only guarantees that it can be flexibly applied to the determined access policy for various roles in an organization. It cannot allow users to flexibly define various access rights for different digital contents for...
To support users' purchase of digital content over a mobile network, a mobile trading scheme for digital content based on the digital rights concept is proposed in this paper. Based on our proposed mobile trading scheme, not only can content providers transmit authorized digital content to service providers according to predefined contracts, but consumers can also purchase digital content through...
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