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Multicast is efficient transfer scheme for contents distribution to a large number of clients, but it is necessary to meet security issues. On the other hand, source authentication is one of the important techniques for protecting from malicious users that plot eavesdropping, masquerading and so on. Though many authentication schemes have been proposed, most of them are not suitable for practical multicast network. The design of scheme should meet robustness against unreliable network. In this paper, the authors expand the existent authentication scheme using erasure code, and propose the novel control mechanism that cooperates with data reconstruction process.
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