[MOBILE PHONE WITH FILE ENCRYPTION FUNCTION AND METHOD OF ENCRYPTING/DECRYPTING FILE THEREOF]

摘要

A mobile phone with file encryption function and method for encrypting file thereof are provided. The main unit of the mobile phone includes an encryption software. The second encryption software encrypts/decrypts the file stored in the computer based on a key. The method for encrypting file comprises: (a) establishing a transmission channel between the mobile phone and the computer; (b) sending the first file from said computer to the mobile phone; (c) encrypting/decrypting the first file based on a key to obtain a second file in the mobile phone; and (d) sending the second file from the mobile phone to the computer. Of course, the first file can be divided into a plurality of first packets in the computer. Then, the first packets can be sent to the mobile phone, encrypted/decrypted in the mobile phone, and sent back to the computer until all of the first packets have been encrypted/decrypted to obtain the second packets. Finally, the second packets can be combined to obtain the second file in the computer.