Keywords : hiding information


Encrypted and Hiding Information in Digital Images using Wavelet Transformation and LSB Technology

Ahmed Hamed Saleh Al-Badrani

AL-Rafidain Journal of Computer Sciences and Mathematics, 2013, Volume 10, Issue 1, Pages 75-84
DOI: 10.33899/csmj.2013.163442

Hiding information is an effective solution for the protection of copyright and confidentiality to allow a person to send the data in the middle of the cover image to a person without knowing any third party in this transmission, methods of delivering secret messages are very important. This research provides a way to hide data (which is a text file) after is encrypted adoption method (Keyword Mixed Transposition) to produce cipher text is included in Low–High coefficient wavelet transform and get a good quality image and the possibility of recovering fully embedded message and decoded without relying on the original image. Results have applied to the digital images to get inline images to the data with a high correlation coefficient when compared with the original images in addition to that they gave a few differences when calculating measurements(SNR, PSNR, MSE).
 

Reduction of the Accompanying Noise when Hidding in an Audio File

Radwan Y.S. Al-Jawadi; Adel S. Issa

AL-Rafidain Journal of Computer Sciences and Mathematics, 2008, Volume 5, Issue 1, Pages 61-79
DOI: 10.33899/csmj.2008.163962

The stereography which used to hide certain information using a host file is a science and an art. Such practice is usually done to keep away any thought in the presence of a hidden message in the host. Hiding is often done using sound, image or video files. The problem is that such hiding may cause some detectable changes in the host file .This study focuses on hiding in WAVE type sound file. Sound files are either one-byte sample or two- byte sample .The hiding idea involves the replacement of the original data by another data from a text file. The first four bits from each byte are used in wave file as a hiding domain.
Accordingly, a hiding system was designed for the reduction of the accompanying noise. In this research, it was depended on the human herring for group of people to calculate the reduction in the noise of the host file .It was also shown that hiding in 8-bit sample (1 byte) results in a clearly detectable noise. This jumping 10 bytes in each replacement process led to eliminate the noise .It was also concluded, that when using first and second bit from each byte the noise was completely eliminated by jumping 30 byte. On the other hand, hiding in 16-bit sample (2byte) has led to complete disappearance of the noise when jumping 10 byte at each data replacement process.