Author : Dhia Kadhm Al-Shakarchy, Noor
journal of kerbala university,
Volume 8, Issue 4, Pages 170-179
With the development of information technology, people have paid more and more attention on the information security today. Information hiding research has become the focus of the information security research. Because every web sites and networks communication depend on the multimedia, such as audio, video, image and so on.
Information hiding technology can embed secret information in to a digital media source without impairing the perceptual quality of the source. Steganography could informally be defined as the “ cover writing”, where it means concealing a message that is the object of the communication. Steganography has its place in security, and is not intended to replace cryptography but to supplemented it.
In this research a new simple approach for active Steganography is presented that can successfully resist recent blind stegoanalysis methods. A proposed method based on embedding data in a randomized manner. The randomization done by used pseudo random generation depending on Linear Feed-back Shift register (LFSR) and Non-Linear Feed-back Shift Register (NLFSR). The proposed method divided the cover image in to blocks then used first generation with ( LFSR) to determine the blocks and these arrangement used in embedding process. This represent the first randomization. In each block second randomly generation ( NLFSR) apply to determine the pixels and these arrangement using in embedding process. The randomization and don’t used all pixels makes the distortion in stego-image very little that’s provide strongest against detection and attempts of stegoanalyst.