Message Bytes Research Articles

Steganografi Video Digital dengan Algoritma LSB (Least Significant Bit) dan Rijndael

Steganography is the science and art of hiding information so that confidential information cannot be known by others, except the sender and receiver. This research is designed to create a steganography system on video with mp4 format. The message is inserted in one of the video frames, first encrypted with the Rijndael algorithm. The method of inserting messages in the video frame is the Least Significant Bit (LSB) method. Extraction of frames on video using ffmpeg software. Qualitative testing used to identify changes in video frames with human senses. Quantitative testing was carried out by testing six videos with different resolutions, while there were five inserted messages with varying Byte lengths. The frame that has been inserted with a message is measured for noise with the Peak Signal to Noise Ratio (PNSR). The test results show that the LSB method cannot be used for message insertion whose Byte size is greater than the capacity of the cover video. There is a change in image quality if the size of the inserted message bytes is getting bigger.

Steganography Genetic Algorithm Hyperparameter Tuning through Response Surface Methodology


 
 
 Steganography consists of hidding bits of an information source into a host source. In image processing, a common way of doing the hiding process is to break each byte from the message information and embbed into the message bytes in a way that the differences among the original host and the embedded one is minimized. A genetic algorithm can be used to find the proper combination of bits in order to minimize such differences, but some hyperparameters need to be optimized in order to get an optimized performance. This work investigates the application of Response Surface Methodology in order to find the best hyperparameters of a genetic algorithm applied to image steganography.
 
 

Security against Sample Pair Steganalysis in Eight Queens Data Hiding Technique

There are many steganalysis methods, which can estimate length of a message embedded in least significant bits. It may be embedded either in spatial domain or in frequency domain. The well known approaches are Chi - Square test, RS steganalysis and Sample Pair steganalysis. Many commercial steganographic programs are based on LSB method. It is important to ensure undetectablity of a hidden message in a carrier. We present an analysis of steganographic security on data hiding approach using eight queen solutions. In this approach, relationship between message bytes and 8-queen solutions is embedded in the cover. Further, we propose a new approach to adjust the statistical properties of the cover image in such a way that the steganalyst may not be able to detect the presence of hidden message. The proposed approach is tested using steganalysis tool STEGEXPOSE and the experimental results found are within acceptable range.

A view of database system performance measures

Database systems allow quick creation of performance problems. The goal of database systems is to allow the computer-illiterate to write complex and complete applications. It is the job of the syst...