可以通过查询这个对象来获得密钥名和其他密钥信息。
This object can be queried to get the key name and other key information.
如果恶意用户获得了这些密钥信息，那么主机的安全性就很容易受到威胁。
If a malicious user gets hold of this key information, then the security of that host machine can be compromised very easily.
客户机通过将相应的密钥信息传递给服务提供程序来认证经过加密或签名的数据。
The client authenticates the encrypted/signed data by passing the corresponding key information to the service provider.
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