Message Embedding In PNG File Using LSB Steganographic Technique

Many types of Internet-based applications have been used for centuries to be secure important information and data. In some case, the communication is necessary to be secret. Consequently, the security of information has become a fundamental issue. In this paper, an image steganographic technique is presented by combining cryptographic and steganographic techniques. This system uses LSB-based data embedding technique to hide the encrypted message. Before embedding the secret message, RC4 algorithm is also used for message encryption. In this system, BBS (Blum Blum Shub) Pseudo Random Number Generator is used for generating the random sequences and then the secret messages can be hidden in PNG image file by using random sequences. This system is intended to emphasis on digital applications, focusing on hiding information under PNG image file.