Keyphrases
- unauthorized access
- countermeasures
- oracle database
- traffic analysis
- database
- security protocols
- encryption scheme
- security mechanisms
- malicious attacks
- attack detection
- computer security
- access control
- chosen plaintext
- standard model
- monotonicity constraints
- malicious users
- terrorist attacks
- secure communication
- security risks
- cryptographic protocols
- encryption algorithm
- ciphertext
- watermarking technique
- database administrators
- security policies
- watermarking scheme
- digital images