Daza, VanesaDomingo-Ferrer, JosepSebe, FrancescViejo, Alexandre2020-10-232020-10-232008Daza V, Domingo-Ferrer J, Sebe F, Viejo A. Trustworthy privacy-preserving car-generated announcements in vehicular ad hoc networks. IEEE Trans Veh Technol. 2008 Jul 25;58(4):1876-86. DOI: 10.1109/TVT.2008.20025810018-9545http://hdl.handle.net/10230/45566Vehicular ad hoc networks (VANETs) allow vehicle-to-vehicle communication and, in particular, vehicle-generated announcements. Provided that the trustworthiness of such announcements can be guaranteed, they can greatly increase the safety of driving. A new system for vehicle-generated announcements is presented that is secure against external and internal attackers attempting to send fake messages. Internal attacks are thwarted by using an endorsement mechanism based on threshold signatures. Our system outperforms previous proposals in message length and computational cost. Three different privacy-preserving variants of the system are also described to ensure that vehicles volunteering to generate and/or endorse trustworthy announcements do not have to sacrifice their privacy.application/pdfeng© 2008 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. http://dx.doi.org/10.1109/TVT.2008.2002581info:eu-repo/semantics/articlehttp://dx.doi.org/10.1109/TVT.2008.2002581Vehicular communicationsSecurityPrivacySecret sharingThreshold signaturesProtocol designinfo:eu-repo/semantics/openAccess