Patent ID: 9703267
Date: 2017-07-11
CPC Classifications: G04F,G06K,G06T,H04L

Claim:
1. A method for visually authenticating photos, comprising: calculating a first digital signature based on photo data corresponding to a photo to obtain first signature data, and storing the first signature data; and when a picture is displayed, extracting picture data from a picture file corresponding to the picture, calculating a second digital signature based on the extracted picture data to obtain second signature data, and comparing the second signature data with the first signature data; when the second signature data and the first signature data are identical, displaying an authentic mark with the picture; and when the second signature data and the first signature data are not identical, determining an implied authentic status, and displaying the authentic mark with the picture when the implied authentic status is determined, wherein the determining an implied authentic status comprises: normalizing the picture to a same size of an original photo corresponding to the picture; calculating a difference between the normalized picture and the original photo; and checking whether the calculated difference is zero or not, and assigning an implied authentic status if the calculated difference is zero.