A new certificateless public key encryption scheme

Certificateless public key cryptography (CL-PKC) enjoys the advantage of identity based cryptography without suffering from its inherent key escrow problem. In this paper, a new efficient certificateless public key encryption scheme is proposed and its security can reach chosen-ciphertext (CCA2) secure in the random oracle model assuming the CDH and p-BDHI problem are difficult. A comparison shows that the efficiency of the proposed scheme is better than all known paring-based certificateless public key encryption schemes in the random oracle model. Biography: CHEN Yan(1984–), female, Master candidate, research direction: the theory and technology of cryptology.