Boneh Franklin

The concept of Identity Based Encryption (IBE) was first proposed by Ron Rivest in 1981. A system developed by Dan Boneh and Matthew K Franklin in 2001 provided the first practical identity based encryption (IBE) scheme.

There are two versions of the Boneh-Franklin scheme, called BasicIdent and FullIdent, and both are secure against Chosen Plaintext Attacks (IND-CPA). BasicIdent is not chosen ciphertext secure but can be transformed into a scheme that is, and then called FullIdent, by applying a variant of the Fujisaki-Okamoto transformation.