Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Secure Multimedia Authoring with Dishonest Collaborators Nicholas Paul Sheppard | EURASIP Journal on Applied Signal Processing 2004 14 2214-2223 2004 Hindawi Publishing Corporation Secure Multimedia Authoring with Dishonest Collaborators Nicholas Paul Sheppard School of Information Technology and Computer Science The University of Wollongong NSW 2522 Australia Email nps@ Reihaneh Safavi-Naini School of Information Technology and Computer Science The University of Wollongong NSW 2522 Australia Email rei@ Philip Ogunbona School of Information Technology and Computer Science The University of Wollongong NSW 2522 Australia Email philipo@ Received 31 March 2003 Revised 16 December 2003 Many systems have been proposed for protecting the intellectual property of multimedia authors and owners from the public at large who have access to the multimedia only after it is published. In this paper we consider the problem of protecting authors intellectual property rights from insiders such as collaborating authors and producers who interact with the creative process before publication. We describe the weaknesses of standard proof-of-ownership watermarking approaches against dishonest insiders and propose several possible architectures for systems that avoid these weaknesses. We further show how these architectures can be adapted for fingerprinting in the presence of dishonest insiders. Keywords and phrases digital watermarking collaboration multiple watermarking proof of ownership fingerprinting. 1. INTRODUCTION Multimedia security research has focused on security of published content and upon protecting the intellectual property of the content owners and creators from malicious end users. These systems however do nothing to resolve intellectual property disputes that arise prior to publication for example between collaborating authors. We will consider intellectual property protection in the case where the disputing parties are or claim to be involved in the creation stage of the content in dispute. We will specifically consider
