“…Image encryption is an effective technology for protecting image security. One method for encrypting images is to convert images into binary data streams [1] and then use traditional encryption algorithms to encrypt data streams, such as Rivest–Shamir–Adleman algorithm (RSA), Data Encryption Standard (DES), and International Data Encryption Algorithm (IDEA) [2–5]. However, the image data has the unique characteristics of a large data volume, high correlation, and robust repeatability; a traditional encryption scheme is unsuitable for encrypting image data and leads to an inefficient encryption.…”