Abstract
The analysis is made on the security in the information process in this paper. In order to avoid system breakdown under the process by traditional development of file encryption and decryption system, a new approach based on minifilter is proposed. Using a client/server mode and ingenious design for automatically embedding the file encryption tag, the model implements the encryption and decryption functions about the office document under the Windows XP environment. The tests for three different size files have been done with DiskBench for reading and writing hard disk drive. The experiment results show that the approach is reliable, robust, and effective.
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