对于非用户的主体，密钥是随机生成的。

For principals other than users, a key is generated randomly.

youdao

使用代理服务，对于那些不希望在移动设备上存储用户名以及访问密钥的用户来说，可以使用这个选择。

Via a proxy service, for those not wanting to store their account name and access key on the device.

youdao

当然，如果对于每个用户和每个实例使用不同的ssh密钥，Pageant只能为对每个实例的第二次和后续连接提供密钥，但这是实现更高的安全性要付出的代价。

Of course, if you use per-user and per-instance SSH keys, then Pageant can only provide the key for the second and subsequent connections to each instance - but that's the cost of tighter security.

youdao