Keyphrases
- security model
- access control
- public key
- security requirements
- security analysis
- data security
- privacy preserving
- security properties
- security mechanisms
- personal information
- designated verifier
- authentication protocol
- security issues
- sensitive information
- public key cryptography
- provably secure
- authentication and key agreement
- privacy protection
- distributed systems
- information security
- fine grained
- knowledge management
- case study