Efficient LSB Embedding Using Boosted Steganography

Steganography is the science of hiding information in a multimedia carrier such as an image, audio or video file. The method used to hide information prevents attackers from revealing it and sharing it with others. Digital images such as bitmap files are the mostly used carriers for steganography. This paper presents a new technique that embeds secret message in the LSB of the cover image. In boosted steganography, the cover image is preprocessed before the message is embedded into the LSBs. The secret data is first converted into stream of bits and compared with the LSBs of cover image. The level of distortion is noted. The combination of brightness and contrast of the image is varied and then LSBs of cover image are compared with the secret data bit stream. The point at which distortion level is reduced to the minimum is determined. Finally the secret data is embedded in the image having a particular selected value of brightness and contrast. The experiment measures total number of matches and mismatches between LSB bits and secret data for different levels of brightness and contrast of the image. The results show improvement in the existing scheme of LSB embedding

Hidden and Uncontrolled - On the Emergence of Network Steganographic Threats

Network steganography is the art of hiding secret information within innocent network transmissions. Recent findings indicate that novel malware is increasingly using network steganography. Similarly, other malicious activities can profit from network steganography, such as data leakage or the exchange of pedophile data. This paper provides an introduction to network steganography and highlights its potential application for harmful purposes. We discuss the issues related to countering network steganography in practice and provide an outlook on further research directions and problems.Comment: 11 page

Review on DNA Cryptography

Cryptography is the science that secures data and communication over the network by applying mathematics and logic to design strong encryption methods. In the modern era of e-business and e-commerce the protection of confidentiality, integrity and availability (CIA triad) of stored information as well as of transmitted data is very crucial. DNA molecules, having the capacity to store, process and transmit information, inspires the idea of DNA cryptography. This combination of the chemical characteristics of biological DNA sequences and classical cryptography ensures the non-vulnerable transmission of data. In this paper we have reviewed the present state of art of DNA cryptography.Comment: 31 pages, 12 figures, 6 table

Covert Channels in SIP for VoIP signalling

In this paper, we evaluate available steganographic techniques for SIP (Session Initiation Protocol) that can be used for creating covert channels during signaling phase of VoIP (Voice over IP) call. Apart from characterizing existing steganographic methods we provide new insights by introducing new techniques. We also estimate amount of data that can be transferred in signalling messages for typical IP telephony call.Comment: 8 pages, 4 figure