要添加新的密钥类型，必须由一个内核服务注册它。

To add a new key type, it must be registered by a kernel service.

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其他任何密钥类型必须已经通过内核服务向内核注册，然后才能使用。

Any other key type must be already registered with the kernel via a kernel service.

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许多关键服务在内核空间中运行。

Many critical services are run in kernel space.

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许多关键服务在内核空间中运行。

Many critical services are run in kernel space.

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