Keyphrases
- security mechanisms
- payment systems
- resource constrained
- access control
- rfid tags
- security issues
- security systems
- smart card
- security problems
- operating system
- security requirements
- secure electronic
- security protocols
- digital signature
- security services
- resource constraints
- key management
- cryptographic algorithms
- wireless sensor networks
- intrusion detection
- computer systems
- knowledge management
- sensor networks