| 摘要 |
PURPOSE: A method for relating a security memory domain with user input directly matching and rendering images capable of protecting a transaction and a system thereof are provided to prevent a click attack by relating the security memory domain with the user input matching and rendering the images. CONSTITUTION: An application program in an access-protected memory domain is opened(102). A video frame buffer is allocated to the access-protected memory domain(104). A user image is loaded into the access-protected memory domain to be decoded. A keyboard is rendered on the decoded user image. Coordinates of user input are related with a key of the rendered keyboard image(112). The display of the key is stored in the access-protected memory domain(114). [Reference numerals] (102) Forming protected memory domain(protected memory table(s)); (104) Loading/authenticating/opening user input application with protected memory domain; (106) Allocating video frame buffer to protected memory domain; (108) Rendering input display image(example, a keyboard) on video frame buffer image; (110) Receiving user input through cursor, pointer, and touch device; (112) Associating user input with picture in protected memory; (114) Storing display of picture in protected memory domain; (116) Releasing video frame buffer from protected memory buffer and outputting display of picture from protected memory domain
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