|
Digital Steganography
KOCIÁNOVÁ, Helena
Digital steganography is a technique for hiding data mostly into multimedia files (images, audio, video). With the development of information technology this technique has found its use in the field of copyright protection and secret data transfer, could be even applied in places where is limited possibility of using cryptography (e. g. by law). This thesis gives insight into digital steganography and contains an application using this technique.
|
| |
|
Steganography
Podhorský, Jiří ; Kubíček, Radek (referee) ; Zemčík, Pavel (advisor)
This bachelor project focuses on steganography and presents new modifications of known metods steganography and their implementation. It also presents implementation of adaptive metod Neighbours, for comparison. Both of the metods are based on the "Least Significant Bit" exploitation. It is also demonstrated that newly proposed modification can be used in other metods of steganography. The purpose of proposed method is to encode a secret information into the digital image so that the information is not easily detectable.
|
|
Attacks on Steganographic Systems and Watermarking
Gavornik, Jakub ; Barabas, Maroš (referee) ; Henzl, Martin (advisor)
This thesis focuses on steganalysis, which is detection of steganography, and then on at- tacks on digital watermarking, which aim to invalidate watermarks. The application for stegograms detection is designed and implemented in this thesis. The application focuses on the images, produced by substitution of the least significant bits in QuickStego program. Reliable detection is insured by the designed method, which decodes information embedded in the image, and searches for specific data embedded by the program QuickStego. In the end of the thesis, few experiments are conducted on the sample images, which confirm the ability of detecting stegograms.
|
guest ::
