科研之友
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摘要
Ring signature is a primitive that allows an entity to sign a message on behalf of a group of potential signers (called a ring) while preserving unconditional anonymity in the ring. Ring signature has found many applications in fair exchange, electronic transaction protocols, and ad hoc networks. In this paper, a survey of ring signature from a number of perspectives is presented to provide researchers with a better understanding of this primitive. We survey the state of the art of ring signature schemes along with the security model, and compare their security properties and efficiency. Furthermore, the extensions of ring signature schemes with special properties are also investigated.
