| 摘要 |
A method for securely entering critical data in a computing device with a keypad, a keypad memory buffer, and a display, the keypad including a layout of keys. The method includes prompting a user to enter critical data into the computing device; generating a virtual keypad having substantially the same layout of keys as the layout on the keypad, with the keys in a random organization; displaying the virtual keypad on the display to the user; prompting the user to enter the critical data per the virtual keypad; receiving inputted data from the keys of the keypad in the keypad memory buffer; mapping the inputted data from the keys of the keypad memory buffer to the keys of the virtual keypad to determine the critical data entered via the virtual keypad, whereby the data read from the keypad memory buffer by any intruding application would not be the critical data; and supplying the critical data for further processing.
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