Rasim M. Аlguliev, Fargana C. Abdullayeva

The paper investigates the trust problems which is a fundamental issue among security problems of cloud computing. For this purpose first of all the trust notion studied by various scientific fields is clarified. Technologies of developing of  the reputation based trust, approaches to ensure transparency in the clouds, methods of establishing trust on the basis of service level agreements, mechanisms which provide trust as service are studied. As a result, existing problems in the trust mechanizms are identified, and number of recommendations for these problems solution is offered. (pp. 3-9)

Keywords: Cloud computing, trust, service level agreement, reputation based trust, Sybil attack
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