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Lecture Notes in Computer Science
An Unlinkable Sanitizable Signature scheme (USS) allows a sanitizer to modify some parts of a signed message in such away that nobody can link the modified signature to the original one. A Verifiable Ring Signature scheme (VRS) allows the users to sign messages anonymously within a group where a user can prove a posteriori to a verifier that it is the author of a given signature. In this paper, we first revisit the notion of VRS: we improve the proof capabilities of the users, we give adoi:10.1007/978-3-030-02641-7_10 fatcat:qxn5pdh5tnfpfgc4u4thyof7zy