Designed and implemented a dual-factor authentication file encryption system based on smart-phone, analyzed the security of file encryption system and combined dual-factor authentication technology. Via the mutual approval between Bluetooth as well as application-specific communication protocol and the computer, the system used the smart-phone as a hardware encryption key to set up a file cabinet in the computer for storing private files to deal with the security of information storage. The application shown that the system is easy to use, highly expansible and has greatly improved the security of the data storage.
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