TY - GEN
T1 - Generic anonymous identity-based broadcast encryption with chosen-ciphertext security
AU - He, Kai
AU - Weng, Jian
AU - Au, Man Ho Allen
AU - Mao, Yijun
AU - Deng, Robert H.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - In a broadcast encryption system, a broadcaster can encrypt a message to a group of authorized receivers S and each authorized receiver can use his/her own private key to correctly decrypt the broadcast ciphertext, while the users outside S cannot. Identity-based broadcast encryption (IBBE) system is a variant of broadcast encryption system where any string representing the user’s identity (e.g., email address) can be used as his/her public key. IBBE has found many applications in real life, such as pay-TV systems, distribution of copyrighted materials, satellite radio communications. When employing an IBBE system, it is very important to protect the message’s confidentiality and the users’ anonymity. However, existing IBBE systems cannot satisfy confidentiality and anonymity simultaneously. In this paper, using an anonymous identity-based encryption (IBE) primitive with robust property as a building block, we propose a generic IBBE construction, which can simultaneously ensure the confidentiality and anonymity under chosenciphertext attacks. Our generic IBBE construction has a desirable property that the public parameters size, the private key size and the decryption cost are constant and independent of the number of receivers.
AB - In a broadcast encryption system, a broadcaster can encrypt a message to a group of authorized receivers S and each authorized receiver can use his/her own private key to correctly decrypt the broadcast ciphertext, while the users outside S cannot. Identity-based broadcast encryption (IBBE) system is a variant of broadcast encryption system where any string representing the user’s identity (e.g., email address) can be used as his/her public key. IBBE has found many applications in real life, such as pay-TV systems, distribution of copyrighted materials, satellite radio communications. When employing an IBBE system, it is very important to protect the message’s confidentiality and the users’ anonymity. However, existing IBBE systems cannot satisfy confidentiality and anonymity simultaneously. In this paper, using an anonymous identity-based encryption (IBE) primitive with robust property as a building block, we propose a generic IBBE construction, which can simultaneously ensure the confidentiality and anonymity under chosenciphertext attacks. Our generic IBBE construction has a desirable property that the public parameters size, the private key size and the decryption cost are constant and independent of the number of receivers.
KW - Anonymity
KW - Chosen-ciphertext security
KW - Identity-based broadcast encryption
KW - Random oracle model
KW - Robustness
UR - http://www.scopus.com/inward/record.url?scp=84978900589&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-40367-0_13
DO - 10.1007/978-3-319-40367-0_13
M3 - Conference article published in proceeding or book
SN - 9783319403663
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 207
EP - 222
BT - Information Security and Privacy - 21st Australasian Conference, ACISP 2016, Proceedings
PB - Springer Verlag
T2 - 21st Australasian Conference on Information Security and Privacy, ACISP 2016
Y2 - 4 July 2016 through 6 July 2016
ER -