Enhancing Identity Privacy Using Identity-Based Encryption in Access Networks of 3GPP


KIPS Transactions on Computer and Communication Systems, Vol. 5, No. 10, pp. 361-372, Oct. 2016
10.3745/KTCCS.2016.5.10.361,   PDF Download:
Keywords: Identity Privacy, Identity-based Encryption, Access Network
Abstract

Identity Privacy issues such as exposures of IMSIs(International Mobile Subscriber Identities) in access network have been consistently raised throughout GSM, UMTS, LTE in 3GPP. The 3GPP specification uses temporary identities instead of IMSI to ensure anonymity of the user. Even if temporary identities are disclosed, Identity Privacy may be maintained at a safe level by security policies such as no linkability and periodic update. But in case of IMSI, it cannot be changed even though it is exposed. There still exist some situations that IMSI is used in clear text for the authentication. Therefore, a protective mechanism for the identity confidentiality is needed. In this paper we propose a protocol based on IBE(Identity-based Encryption) to protect permanent identities in access network. By simplifying the scheme, this protocol has minimized the system impact on current 3GPP environment. And this scheme can be applied to all kind of permanent identities and 3GPP AKA(Authentication and Key Agreement) protocols in access network.


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Cite this article
[IEEE Style]
Y. Jung and D. H. Lee, "Enhancing Identity Privacy Using Identity-Based Encryption in Access Networks of 3GPP," KIPS Transactions on Computer and Communication Systems, vol. 5, no. 10, pp. 361-372, 2016. DOI: 10.3745/KTCCS.2016.5.10.361.

[ACM Style]
Yonghyun Jung and Dong Hoon Lee. 2016. Enhancing Identity Privacy Using Identity-Based Encryption in Access Networks of 3GPP. KIPS Transactions on Computer and Communication Systems, 5, 10, (2016), 361-372. DOI: 10.3745/KTCCS.2016.5.10.361.