Patent ID: 7992006
Filing Date: 2011-08-02
Classification: G06Q,G07F

Abstract:
1. A data protection method used for a smart card, said smart card having at least a data frame connected with a data protection system comprising a data storage module, and said data protection system being connected to a data access interface, said data frame including at least a first data field, said data protection method comprising the following steps: selecting corresponded said data frame based on said first data field; storing said encrypted data frame into said data storage module; and using said fake data frame to overwrite corresponded said data frame of said smart card; receiving a mobile phone number; reading out a data frame from said smart card corresponding to said mobile phone number; determining if the data frame corresponding to said mobile phone number is a fake data frame; if the data frame corresponding to said mobile phone number is said fake data frame, using a first identification code to be a first verification password for passing a verification to search and read said encrypted data frame from a data storage module based on said first identification code and using a second identification code to be a second verification password for performing a decryption operation on said encrypted data frame; and if the data frame corresponding to said mobile phone number is not said fake data frame, outputting the data frame corresponding to said mobile phone number; wherein, a random number data or a blank data is generated to write said random number data or said blank data into a plurality of data fields of said fake data frame.