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MoneroResearch.info |
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Lin, H., & Wang, M. (2022). Repudiable ring signature: Stronger security and logarithmic-size. Computer Standards & Interfaces, 80, 103562. Added by: Rucknium (2022-02-24 18:04) |
| Resource type: Journal Article DOI: https://doi.org/10.1016/j.csi.2021.103562 ID no. (ISBN etc.): 0920-5489 BibTeX citation key: Lin2022a View all bibliographic details  |
Categories: Monero-focused Keywords: blockchain, Repudiable Ring Signature, Ring Signature Creators: Lin, Wang Collection: Computer Standards & Interfaces |
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Attachments
S092054892100057X.pdf  [19/840]
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URLs https://www.scienc ... /S092054892100057X |
| Abstract |
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Ring signature, introduced by Rivest et al. [Asiacrypt’01], allows a person to sign a document on behalf of an ad-hoc group (or ring) while hiding the identity of the actual signer. But the anonymity provided by the ring signature scheme can be used to conceal a malicious signer and put other ring members under suspicion. Fortunately, Park et al. [Crypto’19] proposed a repudiable ring signature scheme which can overcome this disadvantage. However, the construction of Park et al. [Crypto’19] is not compact, in other word, the size of signatures and repudiations in their scheme increases with the square of the ring size. In this paper, we propose the first logarithmic-size repudiable ring signature scheme, which means the size of signatures and repudiations grows only logarithmically in the ring size. Moreover, in terms of security model, we present a new requirement (repudiation-unforgeability), which requires ‘no one can forge a valid repudiation’. Our scheme is the first repudiable ring signature scheme satisfies this new requirement.
Added by: Rucknium |