| 摘要 |
<p> A method of visually encrypting a graphical message (100), in which a first share (110) is produced based on the graphical message (100) and a key sequence, the method comprising inserting a filler in a monochromatic area of the graphical message (100) before producing the first share (110). The filler may represent a regularly spaced grid, a pseudo-random pattern, a predetermined graphical image or, in case of a color message, a colorful background. Also a device (500) and a computer program product arranged for carrying out the method.</p> |
