The security mechanism behind the two pairs of keys is called the Open Authentication (OAuth) protocol (see Resources).

两对密钥背后的安全机制被称为开放式验证（OAuth）协议（见 参考资料）。

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The web site administration for this system, a system that can be used to disable automobiles, is protected by simple password authentication that is open to brute force attack.

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Google announced last week, for instance, that it will offer two-factor authentication on many of its online services, and may make the service open source and available to other companies.

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