A Strong Binding Encryption Scheme from Lattices for Secret Broadcast

• Published in: IEEE communications letters Vol. 16; no. 6; pp. 781 - 784
• Main Authors: Noh, Geontae, Hong, Dowon, Kwon, Jeong Ok, Jeong, Ik Rae
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.06.2012; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Binding; binding encryption; Broadcasting; Broadcasting. Videocommunications. Audiovisual; Consistency; Cryptography; decryption consistency; Encryption; Exact sciences and technology; Information, signal and communications theory; lattice; Lattices; Miscellaneous; Networks; Public key; Receivers; Secret broadcast; Signal and communications theory; Telecommunications; Telecommunications and information theory; Vectors; Secret broadcast; lattice; Security of data; Broadcasting; decryption consistency; Encryption; Decryption; Oracle; binding encryption
• ISSN: 1089-7798; 1558-2558
• DOI: 10.1109/LCOMM.2012.041112.112495

In 2009, Jeong et al. suggested a secret broadcast scheme in broadcasting networks using binding encryption. With a binding encryption scheme, a ciphertext is made for a group of receivers, and we can assure that all of the receivers will extract the exact same plaintext from the ciphertext. However, Wu et al. pointed out that Jeong et al.'s binding encryption scheme provides only weak decryption consistency. In this paper, we suggest a binding encryption scheme that provides strong decryption consistency without random oracles. Our binding encryption scheme uses the unique properties of lattices to provide strong decryption consistency.