Data Security System for Chat Applications Using Cryptography, Steganography and Image Processing

Abstract

The privacy plays a major role in the personal life. Due to the vast development in communication technology, people have the privilege to perform various operations seamlessly in their day to day life. But at the same time, privacy of some of those things such as confidentiality of communication is lacking due to the actions of some other parties. A message sent by the sender(s) should only be revealed by the intended recipient(s). Due to privacy issues, from the past, people have used various secret methods to preserve confidentiality of their information. Out of those, one of the developing science was steganography. Steganography is a method of encryption that hides data among the bits of a cover file, such as a graphic or an audio file. To read an encrypted file, one must have access to a secret key or password that enable them to decrypt it. At present this is widely used in various areas to secure valuable information. But in most existing systems, their security has not been trusted. Under this research, proposed a secure, flexible steganography mechanism to encrypt highly confidential messages that avoid them from being accessed by an unauthorized party.