Generic Transformation for Scalable Broadcast Encryption Schemes

Broadcast encryption schemes allow a message sender to broadcast an encrypted data so that only legitimate receivers decrypt it. Because of the intrinsic nature of one-to-many communication in broadcasting, transmission length may be of major concern. Several broadcast encryption schemes with good transmission overhead have been proposed. But, these broadcast encryption schemes are not practical since they are greatly sacrificing performance of other efficiency parameters to achieve good performance in transmission length. In this paper we study a generic transformation method which transforms any broadcast encryption scheme to one suited to desired application environments while preserving security. Our transformation reduces computation overhead and/or user storage by slightly increasing transmission overhead of a given broadcast encryption scheme. We provide two transformed instances. The first instance is comparable to the results of the “stratified subset difference (SSD)”...

• Type: Conference
• Year: 2005
• Where: CRYPTO
• Authors: Jung Yeon Hwang, Dong Hoon Lee, Jongin Lim
• Keywords: Broadcast Encryption Schemes, CRYPTO 2005, Several Broadcast Encryption, Transmission Length