Visual Cryptography Techniques: Short Survey

Visual cryptography (VC) is a mechanism to addresses problems regarding security of images. Visual cryptography splits up a picture into several shares through the encrypting phase. The expression “visual” within visual cryptography comes from verity that the recipient can understand the recovered secret image in his/her vision system during the decryption phase without computer interference. In this survey, we conducted a literature survey on current works from 2012 to 2020 that used various visual cryptography techniques. Provide readers with a schematic of visual cryptography methods is the purpose of this survey. The research summarized by analyzing the concerning methods, which range from the above-mentioned period of time according to specific characteristics and the different techniques proposed and developed from that period. This paper also includes applications focused on the principle about visual cryptography (VC).