Cover selection steganography
Vladimír Hajduk, Dušan Levický · 2016
Information hiding represents an essential part of secure communication. Except for cryptography there is another approach, steganography. Methods of steganography deal with an embedding the confidential information into any modality of multimedia information in such a way that third party is not able to recognize caused modification. Thus there are many sophisticated methods how do build the system more secure. One of them is performing an embedding process in transformation domain. This work utilizes domain after discrete wavelet transformation. However, on the other hand there are effective steganalytic tools determined to detect the presence of embedded information by steganography. Nowadays steganalysis utilizes an effective classifiers and well-chosen sets of statistical features thus it is difficult task for steganography to establish new approaches to build as secure system as possible. One of such methods is proposed in this paper. It is based on compering secret message bits with bits of large databases of images. After that comparing is image with the most correlation chosen. It brings reduction of number of changes caused by the embedding process.