通过对图片的数字密写来进行汉字文本信息传输，较好地解决了在互联网上信息传输的通信安全问题。
A new transmission method of the Chinese character text information based on the picture solves the communication security problem of the information transmission at Internet.
公共密匙基础设施使公共网络和互联网用户相互能安全地通信。
Public key infrastructure enables the public network and Internet subscribers to communicate safely.
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