A Survey of Reversible Data Hiding in Encrypted Images

The creation and application of multimedia has undergone a revolution in the last several years. This is a result of the rise in internet-based communications, which involves the exchange of digital data in the forms of text files, audio files, video files, and image files. For this reason, multimedia has emerged as a vital aspect of people's everyday existence. Information security is crucial since there are several threats that target multimedia integrity, confidentiality, and authentication.Multimedia data needs to be safeguarded, perhaps using encryption, in order to solve these numerous issues. Reversible data hiding in encrypted pictures (RDHEI) is investigate in this survey. (RDHEI) process, which functions by adding extra data to a picture, has surfaced. Employers and academics alike are becoming more interested in and focused on the RDHEI due to its vast range of applications. The purpose of this review is to introduce the various RDHEI schemes, identify the most important RDHEI techniques with varying embedding rates, and then examine the applications and future prospects of RDHEI. The main characteristics of each representative RDHEI Technique taken into consideration in this survey are enumerated in a comparison table.