A Self-certified and Sybil-Free Framework for Secure Digital Identity Domain Buildup

by: Christer Andersson, Markulf Kohlweiss, Leonardo Martucci, Andriy Panchenko

Information Security Theory and Practices. Smart Devices, Convergence and Next Generation Networks (2008), pp. 64-77.

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Abstract

An attacker who can control arbitrarily many user identities can break the security properties of most conceivable systems. This is called a “Sybil attack”. We present a solution to this problem that does not require online communication with a trusted third party and that in addition preserves the privacy of honest users. Given an initial so-called Sybil-free identity domain, our proposal can be used for deriving Sybil-free unlinkable pseudonyms associated with other identity domains. The pseudonyms are self-certified and computed by the users themselves from their cryptographic long-term identities.

@incollection{citeulike:2787343, abstract = {An attacker who can control arbitrarily many user identities can break the security properties of most conceivable systems. This is called a “Sybil attack”. We present a solution to this problem that does not require online communication with a trusted third party and that in addition preserves the privacy of honest users. Given an initial so-called Sybil-free identity domain, our proposal can be used for deriving Sybil-free unlinkable pseudonyms associated with other identity domains. The pseudonyms are self-certified and computed by the users themselves from their cryptographic long-term identities.}, author = {Andersson, Christer and Kohlweiss, Markulf and Martucci, Leonardo and Panchenko, Andriy }, citeulike-article-id = {2787343}, doi = {10.1007/978-3-540-79966-5\_5}, journal = {Information Security Theory and Practices. Smart Devices, Convergence and Next Generation Networks}, keywords = {digital-identity, security, sybil}, pages = {64--77}, posted-at = {2008-05-12 09:17:24}, priority = {2}, title = {A Self-certified and Sybil-Free Framework for Secure Digital Identity Domain Buildup}, url = {http://dx.doi.org/10.1007/978-3-540-79966-5\_5}, year = {2008} }

RIS record

TY - CHAP ID - citeulike:2787343 L3 - citeulike-article-id:2787343 TI - A Self-certified and Sybil-Free Framework for Secure Digital Identity Domain Buildup JF - Information Security Theory and Practices. Smart Devices, Convergence and Next Generation Networks SP - 64 EP - 77 N2 - An attacker who can control arbitrarily many user identities can break the security properties of most conceivable systems. This is called a “Sybil attack”. We present a solution to this problem that does not require online communication with a trusted third party and that in addition preserves the privacy of honest users. Given an initial so-called Sybil-free identity domain, our proposal can be used for deriving Sybil-free unlinkable pseudonyms associated with other identity domains. The pseudonyms are self-certified and computed by the users themselves from their cryptographic long-term identities. KW - digital-identity KW - security KW - sybil AU - Andersson, Christer AU - Kohlweiss, Markulf AU - Martucci, Leonardo AU - Panchenko, Andriy PY - 2008/// UR - http://dx.doi.org/10.1007/978-3-540-79966-5_5 ER -

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