Keyphrases
- attribute based encryption
- ubiquitous learning
- ciphertext
- context aware
- standard model
- access control
- access structure
- encryption scheme
- context awareness
- ubiquitous computing
- ubiquitous computing environments
- ambient intelligence
- secret key
- public key
- mobile devices
- location aware
- mobile computing
- mobile learning
- diffie hellman
- multi attribute
- mobile applications
- low cost
- databases
- hybrid learning
- access control policies
- security analysis
- emerging technologies
- mobile users
- learning activities