| Abstract [eng] |
Stenography is going more and more popular for hiding digital information while people are working more with computers. There are a lot of unused bits in audio files, electronic documents, videos, photos and all other documents. These days stenography uses potencial of those unused bits by saving specific information in those empty slots or replacing part of original file information with its hidden information. The goal is to compare how different methods of stenography work on hiding and searching information. There will be analysed methods and tools of stenography, stenography exposure and steganalysis, made methodics of research. There will be chosen cover carriers and secret messages, needed for the research. There are shown scale numbers of secrets after researches was made. There were made stego images using selected stenographic tools. Bandwidth of tools set, changes of stego image sizes, capacity. Counted scale numbers of stego images. Results of analysis are shown in the end of this work. Most effective stenographic method was offered, which was found by comparing different stenographic methods. Also it was cleared out which tool used can best hide information with lowest risk of being found. |
