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The authors present a novel solution that allows one platform to securely distribute or redistribute digital contents to another in P2P networks. The solution includes three protocols (distribution protocol, usage protocol, redistribution protocol) which are all based on platforms with Trusted Platform Modules (TPMs). It maintains the confidentiality and freshness of digital contents during the processes of distribution. Given an ideal (tamper-proof) trusted platform, the solution can even withstand attacks by dishonest users during the processes of usage. Moreover, it can also be used to redistribute n-time-use digital content offline, so it is more flexible and scalable than other related distribution solutions to enable widespread deployment.
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