(One of the world's cutting-edge encryption software for file encryption, email encryption. Because of its particularity, this software is restricted from exporting by the US Department of Defense for fear of being used by terrorists. But nowadays Internet security cannot be guaranteed, and many private emails are eavesdropped. So PhilipZimmerman developed this software - PGP. This software is to use RSA encryption method.
PGP tutorial full version courseware.ppt)
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