There is no provision for non-repudiation as all application data that is exchanged has been encrypted using symmetric key technology.
由于所有应用程序数据通过对称密钥技术进行加密后才进行交换，因此没有提供不可否认特性。
There is no provision for non-repudiation as all application data that is exchanged has been encrypted using symmetric key technology.
由于所有应用程序数据通过对称密钥技术进行加密后才进行交换，因此没有提供不可否认特性。
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