红帽全球峰会1.2. 证书和 Kerberos 的比较
证书执行的功能与 Kerberos 票据执行的功能类似。Kerberos 是一种计算机网络身份验证协议，它根据票据来允许节点通过非安全网络进行通信，从而以安全的方式证明它们相互的身份。下表显示了 Kerberos 和 X.509 证书的比较：
| 特性 | Kerberos | X.509 |
|
| 是 | 是 |
|
| 可选 | 是 |
|
| 可选 | 是 |
|
| 对称 | 非对称 |
|
| 短（1 天） | 长（2 年） |
默认情况下，身份管理中的 Kerberos 仅确保通信双方的身份。
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