被动认证可分为来源鉴别与内容篡改检测。
Passive authentication methods can be classified into the source detection and tamper detection.
数字图像被动认证是一种新兴的认证技术。
The passive authentication in digital images is a new technology.
本文提出了一种数字图像被动认证方法，对多幅图像拼接篡改的情况进行检测。
In this paper, we propose a method for passive authentication in digital images, to detect the splicing forgery.
品牌还被定义为一个可认证的、基于主动或被动地信守的承诺而有了一定价值的个体。
A brand has also been defined as an identifiable entity that makes a specific value based on promises made and kept either actively or passively.
该方案具有：身份认证、可变密钥、抗主动和被动攻击的优点。
It has features as follows: identity authentication, changeable communication key, secure against active and passive attack.
此外，本方案在不排除网内处理和节点被动加入的情况下，支持数据源认证。
In addition, the proposed scheme also supports source authentication without precluding in-network processing and passive participation.
数字图像认证技术包括主动与被动两种方法。
Digital image authentication includes active authentication and passive authentication.
数字图像认证技术包括主动与被动两种方法。
Digital image authentication includes active authentication and passive authentication.
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