Novel Framework of Identity Based Encryption with CRA

Identity-Based Encryption (IBE) which simplified the public key encrypted and certificate management at Public Key Infrastructure (PKI) is an important alternative method for public key encryption. However one of the main efficiency drawback is that IBE is the partially overhead computation method where its proceed at Private Key Generator (PKG) during user revocation method determined Efficient revocation is being well studied in traditional PKI setting where the process is carried out by an traditional management of certificated is the burden that IBE strives to processing thereby this paper, aiming at tackling the critical issue of identity revocation method thereby we introduce outsourcing format computation into IBE for the first time and propose a revocable IBE scheme in the server-aided setting. Our scheme offloads most of the key generation related operations during like key-issuing and key-update processes to a Key Update Cloud Service Provider, leaving only a constant number of simple operations for PKG and users to perform locally structured The goal is achieved by utilizing a novel collusion-resistant technique. Finally there by providing extensive experimental results to demonstrates the efficiency of our proposed construction.