You can specify custom Metadata on every file. Any user Metadata is a key value pair.

每个文件都可以附加一些由你指定的元数据。

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To create a keystore, the file that holds the keys, as well as the initial key pair, execute the following command (see Listing 8).

要创建一个keystore，即保存密钥和初始密钥对的文件，请执行以下命令(如清单8所示)。

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This creates a file that includes the key pair and is password protected.

此命令将创建一个包含密钥对并且受密码保护的文件。

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