SPKI/SDSI证书在数字版权保护系统中的应用研究

数字作品的版权保护其本质是对作品的远程持久访问控制。SPKI／SDSI是一种注间实现分布式系统的安全访问控制的PKI系统，文章提出了利用SPKI／SDSI证书实现版权保护系统中的身份认证，权限控制和密钥传递等功能，并依此提出了新的安全访问控制协议。     

我国互联网产业的创新发展与版权保护

我国互联网产业蓬勃兴起,业务创新不断涌现。版权保护对于促进产业的创新发展作用越来越重要,侵权盗版行为会严重影响创作热情,最终影响产业良性健康发展。保护版权、促进产业持续创新,需政府主导、互联网企业和社会公众参与,健全和完善著作权相关法律制度和政策体系,营造良好的版权秩序和环境。     

数字水印研究中常用的测试指标(下)

数字水印作为数字媒体版权保护的有效手段。受到极大关注，钽却没有一个良好的衡量手段来对数字水印算法作出合理的评测，本文总结了目前比较流行的数字水印算法衡量手段以及几种有效的数字水印的攻击手段，旨在帮助全面评测水印算法的性能，进而帮助改进数字水印算法，使数字水印算法具有更好的隐形性、稳健性、安全性，以促进数字水印走向实用化。     

数字图像小波域鲁棒性双水印算法

本文提出了一种数字图像小波域双水印算法,该方法在检测时依据一个参考水印来动态调整主水印序列各部分的可信度,从而尽量减少攻击造成的影响。实验表明,该算法有效降低了检测错误的概率,显著地提高了扩频水印的抗攻击能力。     

A digital rights management scheme for broadcast video

Many watermarking techniques have been proposed for digital video and digital broadcast video. In general, they address the seller's or broadcaster's concerns, such as copyright-violation deterrence, copyright-violation detection and copy protection. Some of them provide for data integrity (tamper proofing), which is a shared concern of both subscriber and broadcaster. In all these cases, the watermark generation and embedding is performed or controlled by the seller or broadcaster. Therefore, a broadcaster with malicious intentions could, with manipulation, falsely implicate an innocent subscriber in copyright violation. This could be a major concern for subscribers. In this paper, we propose an integrated solution to manage the broadcaster's copyright and subscriber's false-implication concern (subscriber's rights) for digital video broadcasts. The proposed novel approach makes use of interactive watermarking techniques and protocols to help protect digital rights of all parties involved in video broadcasting.     

ALAI 2016 International Congress,Rome 15/16 September 2016

The Conference of the International Literary and Artistic Association (ALAI) was held this year to discuss the theme: Applied Arts under IP Law – The Uncertain border between Beauty and Usefulness. While it is usual to think in terms of copyright protection when we speak about typical artistic works such as those of literature, painting, music, theater or cinema, no great space has been given to discuss that part of the Intellectual Property that concerns aspects of the human creativity which can be also subject of the Industrial Property law, like the shape of industrial products that are often subject of IP tools such as registered designs. The border between “beauty and usefulness” of a product is often quite blurred, and there are differences in the approach of the law and the jurisprudence at national level from country to country. Hence, it is not often easy to say if, how, where and how long an industrial design can be protected, and this uncertainty can be of great impact on authors and industry, who risk losing protection on their original works. The conference offered a high level discussion on this topic with some of the internationally most renowned experts of intellectual property rights. The acts will be published in spring 2017.     

基于空样式的网页水印方法

网页水印在网页版权保护和防仿冒篡改等方面具有重要应用,现有的网页水印技术主要是利用HTML对一些格式变化的不敏感性进行水印信息的嵌入,这类方法嵌入的水印信息与网页内容严重分离,水印的隐蔽性不强,容易受到攻击。文中提出一种新的基于空样式的网页水印方法,利用HTML对于没有定义的样式不做任何操作的性质,将水印信息转换为没有内容定义的空样式,并嵌入到网页的HTML代码中,使得水印信息与HTML代码联系紧密,隐蔽性强,不易被检测和攻击,同时拥有较大的水印信息容量。与现有方法相比,所提方法具有较大的优越性。     

几何变换攻击下数字水印的同步检测方法

对数字水印系统在几何变换攻击下的同步方案进行了分析,提出了一种新的同步检测方法——同步水印追踪方法(SWTM)。与传统方法相比,该方法无需对几何攻击后的载体图像进行二次处理,因此减少了水印信息的进一步丢失;而通过对剩余水印信息进行追踪,可最大限度地提取剩余的水印信息。仿真实验结果表明,该方法能够有效提高几何变换攻击下水印检测的有效性。     

二值图像数字水印技术综述

计算机网络通信时代,二值数字图像作为一种广为使用的传输媒介,对其进行版权保护和完整性认证具有重要意义。对用于二值图像版权保护和完整性认证的数字水印技术进行详细的综述,介绍了现有的各种水印算法,分析了各自的优缺点,并指出下一步的研究方向。