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  • 1.
    Abdullah, Nazri
    et al.
    KTH, School of Information and Communication Technology (ICT), Software and Computer systems, SCS.
    Håkansson, Anne
    KTH, School of Information and Communication Technology (ICT), Software and Computer systems, SCS.
    Moradian, E.
    Blockchain based approach to enhance big data authentication in distributed environment2017In: 2017 Ninth International Conference on Ubiquitous and Future Networks (ICUFN), IEEE Computer Society, 2017, p. 887-892Conference paper (Refereed)
    Abstract [en]

    Existing authentication protocols for Big Data system such as Apache Hadoop is based on Kerberos. In the Kerberos protocol, there are numerous security issues that have remained unsolved; replay attacks, DDoS and single point of failure are some examples. These indicate potential security vulnerabilities and Big Data risks in using Hadoop. This paper presents drawbacks of Kerberos implementations and identifies authentication requirements that can enhance the security of Big Data in distributed environments. The enhancement proposed is based on the rising technology of blockchain that overcomes shortcomings of Kerberos.

  • 2.
    Abdullah, Nazri
    et al.
    Universiti Tun Hussien Onn Malaysia, Malaysia .
    Kounelis, Ioannis
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Muftic, Sead
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Security Extensions for Mobile Commerce Objects2014In: SECURWARE 2014, The Eighth International Conference on Emerging Security Information, Systems and Technologies, 2014Conference paper (Refereed)
    Abstract [en]

    Electronic commerce and its variance mobile commerce have tremendously increased their popularity in the last several years. As mobile devices have become the most popular mean to access and use the Internet, mobile commerce and its security are timely and very hot topics. Yet, today there is still no consistent model of various m–commerce applications and transactions, even less clear specification of their security. In order to address and solve those issues, in this paper, we first establish the concept of mobile commerce objects, an equivalent of virtual currencies, used for m–commerce transactions. We describe functionalities and unique characteristics of these objects; we follow with security requirements, and then offer some solutions – security extensions of these objects. All solutions are treated within the complete lifecycle of creation and use of the m–commerce objects.

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