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Title:Uporaba steganografije slik na spletu : diplomsko delo
Authors:ID Gradišnik, Nikolaj (Author)
ID Hölbl, Marko (Mentor) More about this mentor... New window
ID Bošnjak, Leon (Comentor)
Files:.pdf UN_Gradisnik_Nikolaj_2024.pdf (2,20 MB)
MD5: 1ADAC0C80661492B80F4AED7596E52FE
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FERI - Faculty of Electrical Engineering and Computer Science
Abstract:Steganografija je postopek skrivanja sporočil v različne medije. V diplomski nalogi smo predstavili primere uporabe slikovne steganografije s poudarkom na metodi najmanj pomembnega bita (LSB) in na metodi diskretne kosinusne transformacije (DCT). Izvedli smo skrivno komunikacijo s pomočjo slik s steganografsko vsebino. Metodo DCT smo implementirali v programskem jeziku Python. Rezultate smo pregledali s stegoanalitičnimi orodji in primerjali njihovo učinkovitost. Opisali smo tudi postopek implementacije lastnega steganografskega algoritma in skrivni prenos podatkov s pomočjo steganografije ter primerjali orodja za stegoanalizo. Ugotovili smo, da so nekateri programi za stegoanalizo specializirani za točno določene metode steganografije. Odkrili smo tudi način skrivanja sporočil v formatih z izgubo, kot je JPEG.
Keywords:Steganografija, diskretna kosinusna transformacija, JPEG, stegoanaliza, skrivna komunikacija.
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[N. Gradišnik]
Year of publishing:2024
Number of pages:1 spletni vir (1 datoteka PDF (VII, 32 f.))
PID:20.500.12556/RUP-8283 New window
UDC:004.774.6:004.056.5(043.2)
COBISS.SI-ID:192308995 New window
Publication date in DKUM:01.03.2024
Views:516
Downloads:57
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FERI
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Licences

License:CC BY-NC-SA 4.0, Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International
Link:http://creativecommons.org/licenses/by-nc-sa/4.0/
Description:A Creative Commons license that bans commercial use and requires the user to release any modified works under this license.
Licensing start date:03.01.2024

Secondary language

Language:English
Title:Image steganography on the web
Abstract:Steganography is the process of hiding messages within various media. This thesis presents examples of using image steganography with a focus on the LSB and DCT methods. Covert communication was carried out using images with steganographic content. The DCT method was implemented in the Python programming language. The obtained results were examined using steganalytic tools, and their effectiveness was compared. The process of implementing a custom steganographic algorithm, secret data transmission through steganography, and a comparison of steganalysis tools are also described. It was found that some steganalysis programs are highly specialized for certain steganographic methods. Additionally, a method for hiding messages in lossy formats, such as JPEG, was identified.
Keywords:Steganography, Discrete Cosine Transform, JPEG, steganalysis, covert communication.


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