We propose a fully functional identity-based encryption scheme (IBE). The scheme has chosen ciphertext security in the random oracle model assuming a variant of the computational DiffieHellman problem. Our system is based on bilinear maps between groups. The Weil pairing on elliptic curves is an example of such a map. We give precise definitions for secure identity based encryption schemes and give several applications for such systems.
Boneh and Franklin REF first proposed a practical identity-based encryption (IBE) scheme based on paring.
Identity-based encryption from the Weil pairing
SIAM J. of Computing
Mathematics Computer Science