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    A clogging resistant secure authentication scheme for fog computing services
    (ELSEVIER, RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS, 2021) Ali, Zeeshan; Chaudhry, Shehzad Ashraf; Mahmood, Khalid; Garg, Sahil; Lv, Zhihan; Bin Zikria, Yousaf
    Fog computing (FC) is an infrastructure consisting of decentralized computing, where computing resources such as storage, applications, and data are scattered among the cloud and data source. Fog computing inherits similar privacy and security concerns present in cloud computing, such as authentication and key management issues. Recently, Wazid et al. presented a scheme of authentication key exchange for fog computing called SAKA-FC to address these issues. We analyzed and identified that the SAKA-FC suffers from some severe vulnerabilities. Furthermore, we presented an improved scheme to mitigate these problems while retaining its strengths. The formal security analysis of the proposed scheme is validated through BAN logic. At the same time, the AVISPA tool is employed for automated formal security verification. Informal security analysis is conducted to attest that the proposal can confront the known attacks. Using computation and communication costs as the metrics, the proposed scheme is also compared with some state-of-the-art schemes. The proposed scheme achieves the same communication cost as of SAKA-FC, whereas the difference in computation cost is 24%. This increase in computation cost is justifiable as the proposal is resistant to clogging attacks and provides better security than the prior schemes.
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    A seamless anonymous authentication protocol for mobile edge computing infrastructure
    (ELSEVIER, RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS, 2022) Mahmood, Khalid; Ayub, Muhammad Faizan; Hassan, Syed Zohaib; Ghaffar, Zahid; Lv, Zhihan; Chaudhry, Shehzad Ashraf
    Mobile Edge Computing (MEC) accommodates processing and data storage and manipulation capabilities across the scope of wireless network. In MEC environment, MEC servers along with the computing and storage capabilities are distributed at the edge of the network. However, due to the broad range of wireless communication, the fulfillment of security requirements still remain a challenging task in the for MEC environment. With the expeditious traffic expansion and growing end user requirements, the classic security protocols cannot encounter the innovative requirements of lightweightness and real-time communication. To meet these requirements, we have proposed an authentication protocol for the MEC environment. Our proposed protocol stipulates secure and efficient communication for all of the intended entities. Meanwhile, during its execution user anonymity remains intact. Moreover, our protocol is proven to be secure under the assumptions of formal security model. Additionally in this article, we have described the security properties of our protocol that it offers resistance against impersonation, session key computation and forward and backward secrecy attacks. The comparative analysis of time consumption and computation overheads are presented at the end of the paper, which is an evidence that our proposed protocol outperforms prior to various existing MEC protocols.