通过使用pam框架，可以添加多种认证技术，而不必更改任何登录服务，从而可以保留已有的系统环境。
With the PAM framework, multiple authentication technologies can be added without changing any of the login services, thereby preserving existing system environments.
消费者可参照技术监督局、中国环境标志认证委员会等相关权威部门的认证进行购买。
Consumers can refer to Technical Supervision, China Environmental Labeling certification Committee and other relevant departments of the certification authority to make a purchase.
远程认证技术提供了一种对终端平台运行环境、配置进行可信评估的手段。
Remote attestation technology provides us a instrumentality to attest the running environment and the configuration of a remote platform.
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