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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.
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Digital Steganalysis
Molnár, Ondřej ; Nevoral, Jan (referee) ; Strnadel, Josef (advisor)
Steganalysis is the opposite science discipline of the steganography - which is an art of information hiding . Steganography deals with embedding of secret messages to different types of media. The most commonly used cover media in modern steganography are image files . This bachelor's thesis creates an overview of known steganograpy and steganalysis methods . It also describes practical implementation of application that is able to detect hidden information in image.
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Digital Steganography and Steganalysis
Poremba, Tomáš ; Wiglasz, Michal (referee) ; Strnadel, Josef (advisor)
This thesis deals with digital steganography and steganalysis. It explains the significance of both disciplines and gives a brief overview of the history in the given fields. The paper separates existing steganographic and steganalytic methods and describes the attributes of various branches of steganography. With respect to the chosen field of steganography (the image steganography), the paper narrows down the set of suitable steganographic and steganalytic methods, whose features are then described in detail. The results of the thesis inlcude experiments that verify the features of chosen steganographic methods and evaluation of steganalytic methods and their success in detection of steganography.
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Digital Steganalysis
Molnár, Ondřej ; Nevoral, Jan (referee) ; Strnadel, Josef (advisor)
Steganalysis is the opposite science discipline of the steganography - which is an art of information hiding . Steganography deals with embedding of secret messages to different types of media. The most commonly used cover media in modern steganography are image files . This bachelor's thesis creates an overview of known steganograpy and steganalysis methods . It also describes practical implementation of application that is able to detect hidden information in image.
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Digital Steganography and Steganalysis
Poremba, Tomáš ; Wiglasz, Michal (referee) ; Strnadel, Josef (advisor)
This thesis deals with digital steganography and steganalysis. It explains the significance of both disciplines and gives a brief overview of the history in the given fields. The paper separates existing steganographic and steganalytic methods and describes the attributes of various branches of steganography. With respect to the chosen field of steganography (the image steganography), the paper narrows down the set of suitable steganographic and steganalytic methods, whose features are then described in detail. The results of the thesis inlcude experiments that verify the features of chosen steganographic methods and evaluation of steganalytic methods and their success in detection of steganography.
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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.
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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.
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