Keyphrases
- access control
- digital rights management
- data protection
- fine grained
- dynamic access control
- data security
- security policies
- security requirements
- digital libraries
- encryption scheme
- security mechanisms
- security model
- security analysis
- encryption algorithm
- role based access control model
- database security
- role based access control
- identity management
- access control mechanism
- secret key
- ciphertext
- rbac model