电子护照安全机制及测试验证解决方案 证机制和访问控制机制。数据认证机制包括被动认证(Passive Authentication，PA)和主动认证(Active Authentication，AA);访问控制机制包括基本访问控制(Basic Access Control，BAC)和扩展访问控制(E
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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）。
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.
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.
文章讨论了主动网络节点的授权和认证，以及实现中必须解决的技术问题。
This paper discusses authorization and authentication of active node in active networks, and issues about their implementation.
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