An Enhanced Transmission Control Protocol Initial Sequence Number Steganographic Method

Princess Marie B. Melo, Ariel M. Sison and Ruji P. Medina

Steganography is a method of hiding a message through physical media such as a file, image or video. Network steganography is another branch of information hiding and as compared to using physical media, this technique hides information through packet header manipulation. Previous network steganography techniques have been implemented, examples are in the case of using TCP header fields wherein direct replacement of the ASCII character has been used. However, those studies show that the embedding algorithm uses one secret character per chosen packet which results to low bandwidth capacity. This paper proposes a technique for network steganography which allows communication to take place over a routed network using the transmission control protocol initial sequence number (TCP ISN). The experimental results show that this technique is better than existing techniques because of its increased bandwidth capacity and its flexibility on adjusting the size of the steganogram to be sent.

Volume 12 | 01-Special Issue

Pages: 252-259

DOI: 10.5373/JARDCS/V12SP1/20201070