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2015 - 20162
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Yazar: Çevikbaş, Cem × Konu: Service provider ×

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  • Küçük Resim
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    SIMSec: A key exchange protocol between SIM card and service provider
    (Springer New York LLC, 2016-08-01) Ok, Kerem; Coşkun, Vedat; Yarman, Bekir Sıddık Binboğa; Çevikbaş, Cem; Özdenizci Köse, Büşra
    Mobile technology is so popular and overdosed adoption is inevitable in today’s world. As the mobile technologies have advanced, Service Providers (SP) have offered services via Smartphones and some of them required secure data communication between the Subscriber Identity Module (SIM) cards on Smartphones and the servers of SP. The latest SIM cards comply with recent specifications including secure domain generation, mobile signatures, pre-installed encryption keys, and other useful security services. Nevertheless, un-keyed SIM cards do not satisfy such requirements, thus end-to-end encryption between the SIM card and SP cannot be provided. In this paper, we provide a key exchange protocol, which creates a symmetric key through the collaborative work of the SIM card and the SP server. After a successful protocol performance, the SIM card and SP can perform end-to-end data encryption. After defining the protocol, we also discuss the security issues and provide a formal security analysis of the protocol using the Casper/FDR tool.
  • Küçük Resim
    Yayın
    Design of a key exchange protocol between SIM card and service provider
    (Institute of Electrical and Electronics Engineers Inc., 2015-11-05) Ok, Kerem; Coşkun, Vedat; Çevikbaş, Cem; Özdenizci Köse, Büşra
    Current capabilities of smart cards, Smartphones, and cellular network provoke companies to provide vast amount of services to the mobile users. Some of those services require end-to-end encryption between a Service Provider and a SIM card. Keyed SIM cards already contain the required structure for secure key generation and upload, whereas un-keyed SIM cards do not have the required capability for this. In this paper, we provide a key exchange protocol, which creates a symmetric key by the collaborative work of SIM card and the Service Provider server. After a successful protocol run, SIM card and Service Provider can perform end-to-end data encryption.