As an effective method for multimedia authentication and tamper detection, fragile watermarking is drawing extensive attention recently.
作为多媒体认证和篡改检测的一种新技术，易碎水印正得到越来越多的关注。
This paper presents a novel recoverable active signature technique of digital images(RADS) , according to the characteristics of image contents and the requirements of multimedia authentication.
本文根据多媒体信息的特点和多媒体认证的具体要求，提出了一种新的数字图象可恢复性主动签名方法（RADS）。
As an effective implements in the copyright protection and integrity authentication for multimedia, digital watermarking techniques has become an active and flouring research topic.
数字水印技术是对多媒体版权进行保护和完整认证的有效工具之一，近年来成为研究热点。
At present, watermarking technique has been a kind of effective means to multimedia copyright authentication and its integrity protection.
目前数字水印已成为多媒体版权认证和完整性保护的有效手段。
We consider the problem of digital watermarking for credibility authentication or tamper proofing of multimedia.
讨论了多媒体信息可靠性鉴定的数字水印方法，可靠性鉴定也称为篡改证明。
With the superiority in the field of the copyright protection in multimedia and the authentication of media, the technology of digital watermarking is becoming one of the hot-spots.
数字水印技术因其在多媒体版权保护、媒体认证技术方面所具有的优势，逐渐成为人们研究的热点之一。
Digital watermarking is used for copyright protection, authentication of multimedia and so on.
数字水印技术可以用于版权维护、多媒体认证等方面。
As a branch of multimedia information security technology, digital image authentication is paid close attention by one of a growing number of experts.
数字图像认证技术作为多媒体信息安全技术的分支之一，受到了越来越多专家学者的重视。
It has brought us great convenience and a great number of information security problems as well. Such as information theft, copyright protection of multimedia data and image authentication.
它给人们带来种种便利的同时也带来了一系列的信息安全问题，比如信息窃取问题、多媒体信息的版权保护问题、信息篡改问题等。
With the development of computer network and multimedia technology, copyright protection and authentication become more and more urgent.
随着多媒体技术和网络技术的飞速发展和广泛应用，版权保护和安全认证成了迫切需要的问题。
It can provide effective protection for digital media forgery, falsification, authentication, security and intactness by embedding a special mark (digital watermark) into the multimedia data.
它主要通过在媒体信息中嵌入标记信号(数字水印)，为媒体信息在防伪、防篡改、认证、保障数据安全和完整性等方面提供有效的技术手段。
In this paper, an analysis of the procedure and security of IMS (Internet protocol multimedia subsystem) authentication and key agreement protocol has been made.
本文分析了IMS认证与密钥分配协议的过程，找出了认证协议中的安全缺陷，并给出了攻击者可能进行的攻击。
In this paper, an analysis of the procedure and security of IMS (Internet protocol multimedia subsystem) authentication and key agreement protocol has been made.
本文分析了IMS认证与密钥分配协议的过程，找出了认证协议中的安全缺陷，并给出了攻击者可能进行的攻击。
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