数字水印的应用及攻击类型

随着多媒体技术的应用,在多媒体数据中嵌入隐蔽标记的数字水印技术,因其保真性、安全性和鲁棒性,在票据防伪、拷贝控制及广播监视等领域得到了探索性的应用。同时针对水印系统的攻击也越来越多,影响了水印的安全性。针对水印系统的攻击主要分为三大类:未经授权的删除、未经授权的嵌入、未经授权的检测。本文从水印系统的特性、应用、攻击三个方面对数字水印技术进行论述。

Applications and Attacking Modes of Digital Watermark

The digital watermark has ability of security and ability keeping true.And the digital watermark can holding itself after normal data transact.With application of multimedia,convert inset digital watermark has been broadly explored and used in preventing bill forgery,copy control and broadcases' scout.Now adays attacking aiming at the digital watermark become more and more.This affects the digital watermark's security.Attacking modes aiming at the digital watermak mostly include three modes:deleting without authorization,insetting without authorization and detecting without authorization.This paper introduce the digital watermark system in it's character,application and attacking.