  In a cloud computing environment, access control policy is an effective means
of fortification cloud users and cloud resources services against security
infringements. Based on analysis of current cloud computing security
characteristics, the preamble of the concept of trust, role-based access
control policy, combined with the characteristics of the cloud computing
environment, there are multiple security management domains, so a new cross
domain framework is for access control is proposed which is based on trust. It
will establish and calculate the degree of trust in the single as well as
multiple domains. Role Based Access Control is used for the implementation of
the access control policies in a single domain environment with the
introduction of the trust concept. In multiple domains the access control will
be based on the conversion of roles. On the basis of trust, and role based
access control model, a new novel framework of flexible cross domain access
control framework is presented. The role assignment and conversion will take
place dynamically.
