APPLICATION OF CUTTER–JORDAN–BOSSEN METHOD FOR DATA HIDING IN THE IMAGE SPATIAL AREA

The article deals with the main methods of digital steganography and presents a classification scheme. Special attention is paid to Cutter–Jordan–Bossen method for hiding data in the spatial area of the image. Aim. The study of digital shorthand methods, as well as the assessment of their applicability for hiding information in images. The main task is to analyze the Cutter–Jordan–Bossen method for hiding data in the spatial area of the image and evaluate its effectiveness under various conditions. Materials and methods. In this work, various methods of digital shorthand were used, including the Cutter–Jordan–Bossen method. Images of various types and quality, as well as various embedding parameters were used for testing. Results. As a result of the study, it was revealed that the Cutter–Jordan–Bossen method is effective for hiding information in the spatial area of the image. The dependence of the data extraction quality on the embedding parameters was tested, which showed that the optimal parameters depend on the type of image and its quality. The resistance of the information hidden by this method to distortion during compression was also tested. The test results showed that JPEG compression, even at low and high energy values, leads to the destruction of information hidden in the container. It was found that the best results are achieved when using the Cutter–Jordan–Bossen method with optimal embedding parameters, which allows you to save hidden information when compressing an image. Conclusion. In conclusion, we can say that the study of digital shorthand methods and their application to conceal information in images is an urgent and important topic. The Cutter–Jordan–Bossen method has shown good results in hiding information in the spatial area of the image, but for each specific case it is necessary to choose the optimal embedding parameters. It was found that JPEG compression can significantly affect the quality of information extraction, so it is necessary to take this factor into account when choosing a method for hiding data in an image. In general, the study of digital shorthand techniques and their application to conceal information in images can be useful for various fields, such as the protection of confidential information and digital watermark.