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Title:
Concise Linkable Ring Signatures and Forgery Against Adversarial Keys
Authors: Brandon Goodell, Sarang Noether, Arthur Blue
Abstract:We demonstrate that a version of non-slanderability is a natural definition of unforgeability for linkable ring signatures. We present a linkable ring signature construction with concise signatures and multi-dimensional keys that is linkably anonymous if a variation of the decisional Diffie-Hellman problem with random oracles is hard, linkable if key aggregation is a one-way function, and non-slanderable if a one-more variation of the discrete logarithm problem is hard. We remark on some applications in signer-ambiguous confidential transaction models without trusted setup.
ePrint: https://eprint.iacr.org/2019/654
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