Abstract: The present invention involves a ring code, an encoding method, a method for identifying the ring code, an application method of the ring code, a seal and an electronic file of the seal, wherein contents recorded in the ring code correspond to a electronic file containing the electronic seal or the digital seal, and contents of different electronic files correspond to different ring codes; the ring code comprises an anti-counterfeiting code and a ring encryption area, and the anti-counterfeiting code fills the ring encryption area; an encoding method comprises acquiring data to be encoded, converting the data to be encoded into the anti-counterfeiting code, and filling the anti-counterfeiting code in the ring encryption area; and a method for identifying the ring code comprises acquiring a starting position of the anti-counterfeiting code, segmenting the anti-counterfeiting code from the starting position and expanding the anti-counterfeiting code to form a bar code, and scanning the bar code to obtain data c

Abstract: An encrypted seal and a double encryption method of bar-shaped data, wherein the encrypted seal includes a graphic text area, a seal frame, and a bar-shaped digital encryption area, wherein both the graphic text area and the bar-shaped digital encryption area are arranged within the seal frame, inside the bar-shaped digital encryption area is filled an encrypted code, the encrypted code records stamped information of a stamped file, different stamped files correspond to different encrypted codes, and the bar-shaped digital encryption area is arranged in a blank area between the graphic text area and the seal frame; the double encryption method of bar-shaped data comprises steps of obtaining a barcode or a character string to be processed, splitting the barcode or the character string to be processed, and re-splicing two code fragments with missing information.