k-Resilient Identity-Based Encryption in the Standard Model
Swee‐Huay Heng · IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences · 2006
We present and analyze an adaptive chosen ciphertext secure (IND-CCA) identity-based encryption scheme (IBE) based on the well studied Decisional Diffie-Hellman (DDH) assumption. The scheme is provably secure in the standard model assuming the adversary can corrupt up to a maximum of k users adaptively. This is contrary to the Boneh-Franklin scheme which holds in the random-oracle model.