Paper 2006/484

A New Identity Based Encryption Scheme From Pairing

Xianhui Lu, Dake He, and Guomin Li

Abstract

We construct an efficient identity based encryption scheme from pairing. The basic version of the new scheme is provably secure against chosen plaintext attack, and the full version of the new scheme is provably secure against adaptive chosen ciphertext attack. Our scheme is based on a new assumption (decision weak bilinear Diffie-Hellman assumption ) which is no stronger than decision bilinear Diffie-Hellman assumption.

Note: A new IBE scheme based on a new assumption in bilinear group