Keyphrases
- multi user
- private key
- high security
- block cipher
- virtual world
- stream cipher
- public key
- virtual environment
- multi granularity
- security analysis
- secret key
- single user
- image encryption
- augmented reality
- user interface
- multiple users
- advanced encryption standard
- access control
- multi touch
- intrusion detection
- smart card
- secure communication
- key distribution
- hash functions
- chosen plaintext
- security requirements
- computer vision
- human computer interaction
- security protocols
- security issues
- security mechanisms
- virtual space
- security policies
- ciphertext
- digital signature
- collaborative writing
- statistical databases
- encryption algorithms
- chosen plaintext attack
- signature scheme