Keyphrases
- encryption scheme
- identity based encryption
- standard model
- security analysis
- cca secure
- diffie hellman
- data sharing
- public key
- secret key
- ciphertext
- signcryption scheme
- secret sharing scheme
- security model
- hash functions
- lossless compression
- public key encryption
- public key cryptosystem
- cost effective
- low cost
- data access
- data objects
- provably secure
- proxy re encryption
- database applications
- wavelet transform
- databases