Proposal and Implementation of Revocable Group Signature Scheme with Scalability

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By anonymous authentications called group signatures, a user can be anonymously authenticated, and thus the privacy of users is protected. In conventional group signature schemes, the computational and/or communicational costs depending on the number of users and the number of revoked ones are required for member revocations. In this research, we constructed revocable schemes that are efficient on both costs, and realized scalable implementations by the fast pairing computations.