易损数字水印技术:研究与应用 |
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引用本文: | 陆唯杰 陈克非. 易损数字水印技术:研究与应用[J]. 计算机科学, 2002, 29(12): 164-167 |
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作者姓名: | 陆唯杰 陈克非 |
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作者单位: | 上海交通大学计算机科学与工程系,上海,200030 |
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摘 要: | 1.引言随着数字化和网络化的发展,出现了数字多媒体的版权和完整性保护等问题。为了解决这些问题,人们开始做各方面的研究,而数字水印技术是其中的一个主要研究方向,并且得到了越来越多的关注。当前研究的数字水印,按其特性主要可以分为两类:鲁棒数字水印和易损数字水印。鲁棒数字水印(Robust Watermarking),要求对多媒体数据进行操作时,不会或者很难去除或破坏嵌在数据中的数字水印,也就是要求保证水印的鲁棒性。主要用于数字产品的版权保护,比如在数字作品中表示著作权信息,如作者、作品序号等,它要求嵌入
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关 键 词: | 数字签名 密码学 易损数字水印 版权保护 数据安全 数据保护 |
Fragile Digital Watermarking: Research and Application |
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Abstract: | Recently, digital watermarking techniques for multimedia get fast growth. Digital watermark is some in-formation that will bring no perceptual feeling when embedded in the multimedia data. There are mainly two kind ofwatermark: robust watermark for copyright protection and fragile watermark for data integrity and data authentici-ty. In this paper, we will mainly focus on fragile watermarking. For the purpose of multimedia integrity and authen-ticity protection, we classify current methods into three categories: digital signature techniques, fragile watermarkingtechniques based on Hash function and other fragile digital watermarking techniques. And we discuss each category inthis paper, and especially discuss fragile watermarking in detail. Such a classification will help us understand thefunctions of digital signature and fragile watermarking in data integrity and authenticity protection. And we also dis-cuss some attacks on fragile watermarking and its applications. |
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Keywords: | Fragile watermark Digital watermark Alteration detection |
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