澳大利亚卧龙岗大学Willy Susilo 教授 学术报告

发布日期:2016-11-07 浏览次数: [字体: ]

 

报告人: Willy Susilo 教授 
Centre for Computer and Information Security Research (CCISR), School of Computing and Information Technology (SCIT), University of Wollongong, Australia.   
题目: Recipient Revocable Identity-Based Broadcast Encryption: How to Revoke Some Recipients in IBBE without Knowledge of the Plaintext
时间:   11月9日14:30
地点:   明理楼(S2)109
Abstract: In this talk, we present the notion of recipient-revocable identity-based broadcast encryption scheme. In this notion, a content provider will produce encrypted content and send them to a third party (which is a broadcaster). This third party will be able to revoke some identities from the ciphertext. We present a security model to capture these requirements, as well as a concrete construction. The ciphertext consists of k+3 group elements, assuming that the maximum number of revocation identities is k. That is, the ciphertext size is linear in the maximal size of R, where R is the revocation identity set. However, we say that the additional elements compared to that from an IBBE scheme are only for the revocation but not for decryption. Therefore, the ciphertext sent to the users for decryption will be of constant size (i.e.,3 group elements). Finally, we present the proof of security of our construction.
报告人简介Willy Susilo obtained his Bachelor Degree in Computer Science from Universitas Surabaya, Indonesia with a "Summa Cum Laude" predicate. He received his Master and Doctor of Philosophy degrees from UOW. His main research interest include cryptography and cyber security. He received a prestigious ARC Future Fellowship from the Australian Research Council. Currently, he is the Head of School of SCIT, Deputy Director of ICT Research Institute and the Academic Program Director for UoW (Singapore), Director of Centre for Computer and Information Security Research.