Method for secretly dividing, sharing and retrieving digital image, involves providing two-dimensional cellular robot on secured cryptographical threshold scheme, and dividing image into shadows to securely distribute between participants

摘要

The method involves dividing a digital image into shadows to securely distribute between participants. The shadows of the secured digital image are shared. An original image is recovered from the shadows to obtain information from the secured digital image. The information of the shadows is combined with predetermined information by a secured cryptographical threshold scheme. A two-dimensional cellular robot is provided on the threshold scheme.