k-times attribute-based anonymous access control for cloud computing

In this paper, we propose a new notion called k-times

attribute-based anonymous access control, which is particularly

designed for supporting cloud computing environment. In this

new notion, a user can authenticate himself/herself to the cloud

computing server anonymously. The server only knows the user

acquires some required attributes, yet it does not know the

identity of this user. In addition, we provide a k-times limit

for anonymous access control. That is, the server may limit a

particular set of users (i.e., those users with the same set of

attribute) to access the system for a maximum k-times within a

period or an event. Further additional access will be denied. We

also prove the security of our instantiation. Our implementation

result shows that our scheme is practical.