Trust Model for Measuring Security Strength of Cloud Computing Service

Cloud computing has become a part of the competitive market today. Various cloud computing service providers are available with their services in the cloud environment. Techniques adopted by various providers to achieve security are of varying nature. To analyze and measure a particular service based on its security properties is a challenge. This paper presents such a measurement by using a trust model. A trust model measures the security strength and computes a trust value. A trust value comprises of various parameters that are necessary dimensions along which security of cloud services can be measured. CSA (Cloud Service Alliance) service challenges are used to assess security of a service and validity of the model. Adequacy of the model is also verified by evaluating trust value for existing cloud services. Trust model acts as a benchmark and ranking service to measure security in a cloud computing environment.