Fully Secure Broadcast Encryption for Inner-Product Predicates

Abstract

According to the broadcast encryption scheme with wide applications in the real world without considering its security and efficiency in the model simultaneously, a fully secure broadcast encryption for inner-product predicates (IPBE) was proposed by combining with Waters dual system encryption methodology and inner-product predicate encryption. Based on the standard model, the scheme can not only achieve constant-size key and ciphertext, but also guarantee the security of the plaintext M as well as the security of the attribute vectors. Furthermore, the scheme is proved by using a non-interactive static assumption and the analysis results indicated that the scheme is fully secure.