Xacml in tinyOS

Question

I have to implement an rbac in mica motes. I've read that Xacml helps in implementation of rbac. But I searched tutorials and google and I'm not able to find anything relevant.Can some one please explain how it should be done or any lead to references.

Thanks

Answer 1

This blog would help you to know about xacml [1]. you can find the xacml samples that have been used rbac use cases from here [2] [3]. Actually in XACML, you can achieve both abac and rabc, it is based on how you define the xacml policy. in your policy, you can defined a "foo" resource can be read by role "bar". But actually you want to check the authorization for user "bob". Then there must be a PIP [4] where, it helps to find the roles of "bob".

[1] http://xacmlinfo.com/category/xacml/ [2] http://xacmlinfo.com/2012/08/16/xacml-sample-for-on-line-trading-application/ [3] http://xacmlinfo.com/2012/08/16/resource-filtering-with-xacml/ [4] http://xacmlinfo.com/2011/12/18/understanding-pip/