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In this paper, we introduce the notion of event-oriented k-times revocable if and only if linked group signatures (k-EoRiffL group signatures). In k-EoRiffL group signatures, signers can sign on behalf of a group anonymously and unlinkably up to a permitted number of times (k) per event. No party, even the group manager, can revoke the anonymity of the signer. On the other hand, everyone can identify...
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