Threshold Discernible Ring Signatures

Kumar, Swarun; Agrawal, Shivank; Venkatesan, Ramarathnam; Lokam, Satyanarayana V.; Rangan, C. Pandu

doi:10.1007/978-3-642-25206-8_17

Cited by 1 publication

(2 citation statements)

References 16 publications

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“…We base our system on threshold discernible ring signatures (TDS), which were introduced by Kumar et al [12]. In a t-threshold discernible ring signature, a user in the system can generate a signature using his/her own private key and the public keys of the other n ring members (with n > t).…”

Section: Appendix a Basics Of Game Theorymentioning

confidence: 99%

“…This t is set to 60% of n. (5) The public keys and the parameters of the ring signature (of each group member) and the public key of the EMS are publicly available. (6) The threshold discernible ring signatures (TDS) [12] provides unforgeability and signer anonymity (details of TDS can be found in Appendix B). (7) The system proposes to leverage GPS and signal triangulation technologies to automatically sense device location.…”

Section: B Design Assumptionsmentioning

confidence: 99%

See 1 more Smart Citation

Enabling Collaborative Privacy in User-Generated Emergency Reports

Qureshi

Rifà-Pous

Megías

2016

Privacy in Statistical Databases

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Abstract. Witnesses are of the utmost importance in emergency systems since they can trigger timely location-based status alerts. However, their collaboration with the authorities can get impaired for the fear of the people of being involved with someone, some place, or even with the same cause of the emergency. Anonymous reporting solutions can encourage the witnesses, but they also pose a threat of system collapse if the authority receives many fake reports. In this paper, we propose an emergency reporting system that ensures the anonymity of honest witnesses but is able to disclose the identity and punish the malicious ones. The system is designed over an online social network that facilitates the indistinguishability of the witness among a group of users. We use a game-theoretic approach based on the co-privacy (co-utility) principles to encourage the users of the network to participate in the protocol. We also use discernible ring signatures to provide the property of conditional anonymity. In addition, the system is designed to provide rewards to a witness and his/her group members in a privacy-preserving manner.

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Section: Appendix a Basics Of Game Theorymentioning

confidence: 99%

Section: B Design Assumptionsmentioning

confidence: 99%