...上述其一密码的文档，则不能用“文档>比较文档”的命令 来和未设密码的文档来作比较 275、 “可信任身份(Trusted Identities)”的作用是 D A：启动 Adobe Acrobat 时保证程序完整性的自我验证用 B：为文档的指定用户规定权限 C：用来验证所用的 Acrobat 序...
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目前的匿名数字指纹要求可信任的第三方参与，这使得购买者的身份仍旧有可能被泄漏出去。
The present anonymous digital fingerprinting schemes require a trusted third party taking part in, which makes the identity of buyer leaked out.
作者的主要研究成果如下：1。目前的匿名数字指纹要求可信任的第三方参与，这使得购买者的身份仍旧有可能被泄漏出去。
The main contributions are as follows. 1. The present anonymous digital fingerprinting schemes require a trusted third party taking part in, which makes the identity of buyer leaked out.
更安全：可进行网络对象识别，身份认证和访问授权，具有数据加密和完整性，能够实现一个可信任的网络。
Safer: can undertake network object identifies, identity attestation and visit accredit, have number to be mixed closely according to adding integrality, can realize a dependable network.
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