数字指纹协议的研究与发展

一、引言随着电子商务的发展,以无形的数字格式作为多媒体产品的发布形式将成为Internet上的主流方式。但由于软件产品的易拷贝性,对软件产品(如JPEG、GIF图像,应用程序,各种文档等)的盗版就变得异常容易。从目前的技术研究来说,在开放环境下要严格防止非法使用者的侵权拷贝是不太可行的。主要的研究方向集中在如何有效地追查非法拷贝源,即发

Research and Development of Digital Fingerprinting Protocol

With the development of e-commerce, digital product has been the main format of multimedia product onthe Internet. At the same time, the problem of copyright protection has gained much attention. Because of the char-acter to be copied easily, the software products such as JPEG or GIF images, applications and documents are beingcopied illegally every day. This does harm to the merchants' benefit. The goal of digital fingerprinting protocol is tostudy a method based on cryptography to trace the source of illegal copy, which in certain conditions can be applied inall kinds of software product. The basic idea of digital fingerprinting, like the fingerprint of human being, is to embedan unique "fingerprint" into each copy of the product sent to the buyer. When finding the illegal copy, the merchantcan trace the source of it, who maybe is a dishonest buyer called traitor, accuse the traitor. So the merchant can pro-tect his copyright. This paper introduces the history of digital fingerprinting protocol and discusses some of the im-portant protocol schemes.