ID-Based Encryption with Keyword Search Scheme from Bilinear Pairings

The paper proposes an ID-based encryption with keyword search scheme from bilinear pairings(IDEKS).It enables one user to send a secret key T
_w
derived from the receiver's identity to a server-a mail server and private key generator (MPKG) that will enable the server locate all encrypted messages containing the keyword W, but learn nothing else. The whole sending and receiving process need not have secure channel.