This is a type of cyber security tool known as a steganography tool. It works by hiding data, or other information, within an image, video or sound file, making it difficult for hackers to detect the presence of the hidden data. The tool will encrypt the data within the file so that it is virtually impossible for anyone other than the intended recipient to access it. The 11883-30 part of the tool refers to the 1997 Federal Information Processing Standard (FIPS) which is the primary security standard used by the US government.