title: An Identity-Based (IDB) Broadcast Encryption Scheme with Personalized Messages (BEPM).
abstract: A broadcast encryption scheme with personalized messages (BEPM) is a scheme in which a broadcaster transmits not only encrypted broadcast messages to a subset of recipients but also encrypted personalized messages to each user individually. Several broadcast encryption (BE) schemes allow a broadcaster encrypts a message for a subset S of recipients with public keys and any user in S can decrypt the message with his/her private key. However, these BE schemes can not provide an efficient way to transmit encrypted personalized messages to each user individually. In this paper, we propose a broadcast encryption scheme with a transmission of personalized messages. Besides, the scheme is based on multilinear maps ensure constant ciphertext size and private key size of each user and the scheme can achieve statically security. More realistically, the scheme can be applied to the Conditional Access System (CAS) of pay television (pay-TV) efficiently and safely.
authors.affiliation: School of Computer Science and Engineering, University of Electronic Science and Technology of China, ChengDu, SiChuan, China.
authors.forename: Ke
authors.initials: K
authors.lastname: Xu
authors.affiliation: School of Computer Science and Engineering, University of Electronic Science and Technology of China, ChengDu, SiChuan, China.
authors.forename: Yongjian
authors.initials: Y
authors.lastname: Liao
authors.affiliation: School of Computer Science and Engineering, University of Electronic Science and Technology of China, ChengDu, SiChuan, China.
authors.forename: Li
authors.initials: L
authors.lastname: Qiao
authors.affiliation: School of Computer Science and Engineering, University of Electronic Science and Technology of China, ChengDu, SiChuan, China.
authors.forename: Zhangyun
authors.initials: Z
authors.lastname: Liu
authors.affiliation: School of Computer Science and Engineering, University of Electronic Science and Technology of China, ChengDu, SiChuan, China.
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Yang
mesh_terms: D000465:Algorithms; D016494:Computer Security; D008402:Mass Media; D018907:Privacy