Keyphrases
- access control
- social networks
- fine grained
- dynamic access control
- security policies
- data security
- distributed systems
- role based access control
- rights management
- access control policies
- security requirements
- directory service
- distributed environment
- security model
- access control systems
- role based access control model
- social media
- link prediction
- identity management
- heterogeneous networks
- security mechanisms
- distributed database systems
- security architecture
- access control mechanism
- digital rights management