2 - Identity Based Cryptography

• Definition of ID-based encryption scheme as 4-tuple (Setup, Key-Gen, Enc, Dec).
• Security experiment (confidentiality, anonymity, confidentiality+anonymity).
• Boneh-Franklin IBE.
• * IBE can be converted to signature.
• * IBE can be converted to non-interactive key-agreement.
• Security of Boneh-Franklin IBE under DBDH and selective-ID attack.