File Security
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Dear sirs: I am developing a client application that retrieves files from an FTP site. I wish for these files to be secure. The methodology I have chosen to implement security is as follows: The files are initially encrypted on the server. A file is then downloaded to the user's machine and decrypted in an unobvious location, and then dislayed in the client application I have developed for viewing the files. When the user is finished viewing the document (closes it), then the file is re-encrypted. The only drawback to this method is that while the files are opened by the client program (they are mostly adobe pdf files), the security of the files are compromised. Does anyone have a better (and not too difficult) solution? Thank you, Rob Hyland
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Dear sirs: I am developing a client application that retrieves files from an FTP site. I wish for these files to be secure. The methodology I have chosen to implement security is as follows: The files are initially encrypted on the server. A file is then downloaded to the user's machine and decrypted in an unobvious location, and then dislayed in the client application I have developed for viewing the files. When the user is finished viewing the document (closes it), then the file is re-encrypted. The only drawback to this method is that while the files are opened by the client program (they are mostly adobe pdf files), the security of the files are compromised. Does anyone have a better (and not too difficult) solution? Thank you, Rob Hyland
Once the files are on a local machine, where is the security issue ? If they are PDF's, they can't be edited by most people, do you want to display them without the user being able to give them to anyone else ? I wonder if it's possible to decrypt the files in memory, and pass them to an IE control, which will render them for you ? Christian Graus - Microsoft MVP - C++