Keyphrases
- access control
- digital rights management
- data protection
- fine grained
- dynamic access control
- security policies
- data security
- access control policies
- role based access control
- digital libraries
- access control models
- encryption scheme
- security mechanisms
- security requirements
- identity management
- encryption algorithm
- access control mechanism
- data encryption
- security architecture
- security analysis
- ciphertext
- rbac model
- operating system
- role assignment
- relational databases