Trust Model for Optimized Cloud Services

  • P. S. Pawar
  • M. Rajarajan
  • S. Krishnan Nair
  • A. Zisman
Conference paper
Part of the IFIP Advances in Information and Communication Technology book series (IFIPAICT, volume 374)


Cloud computing with its inherent advantages draws attention for business critical applications, but concurrently expects high level of trust in cloud service providers. Reputation-based trust is emerging as a good choice to model trust of cloud service providers based on available evidence. Many existing reputation based systems either ignore or give less importance to uncertainty linked with the evidence. In this paper, we propose an uncertainty model and define our approach to compute opinion for cloud service providers. Using subjective logic operators along with the computed opinion values, we propose mechanisms to calculate the reputation of cloud service providers. We evaluate and compare our proposed model with existing reputation models.


Cloud Trust Reputation SLA Subjective logic 


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Copyright information

© IFIP International Federation for Information Processing 2012

Authors and Affiliations

  • P. S. Pawar
    • 1
    • 2
  • M. Rajarajan
    • 1
  • S. Krishnan Nair
    • 2
  • A. Zisman
    • 1
  1. 1.City University LondonLondonUnited Kingdom
  2. 2.British Telecommunications, Security PracticeIpswichUK

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