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Steganography
The document explains steganography as the art of hiding data within images, highlighting its primary technique of altering the least significant bits of image bytes. It discusses both historical examples and modern applications, emphasizing the need for secrecy in the cover medium to maintain the concealment of information. Additionally, it covers various steganography tools and detection methods, concluding with the importance of information security training and tailored strategies to combat risks.
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Steganography
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- 2. SteganographySteganography The new ageart of hidingThe new age art of hiding communicationcommunication BY A.PREM KUMAR
- 3. CONTENTSCONTENTS What’s theSteganography ?What’s the Steganography ? Why the Steganography ?Why the Steganography ? Steganography Tools.Steganography Tools. Detection Process.Detection Process. Defence.Defence.
- 4. What is SteganographyWhatis Steganography ?? The process of hiding data in IMAGESThe process of hiding data in IMAGES is called Steganography.is called Steganography. The most popular method for hiding dataThe most popular method for hiding data in files is to utilize graphic images asin files is to utilize graphic images as hiding places.hiding places. So, Sit back And enjoy the images.So, Sit back And enjoy the images. How is it Done ?How is it Done ?
- 5. What is Steganography? TheLeast significant bit of each byte of the image can be replaced with bits of the secret message. This practice does not affect the graphic enough to be detected. Steganography does not use algorithms or keys to encrypt information, but this is a process to hide data within another object so no one will detect its presence
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- 7. What is thePOINT ? Steganography makes the communication invisible, that is, deny that the message even exists! Even the most trained security specialist or forensic analyst may miss this type of concealment during a forensic review.
- 8. An Example ARoman general shaved a slave’s head and tattooed a message on it. After the hair grew back, the slave was sent to deliver the now-hidden message. Although such a system might work for a time, once it is known, it is simple enough to shave the heads of all the people passing by to check for hidden messages– ultimately, such a steganographic system fails.
- 9. Modern Steganography Modernsteganography attempts to be detectable only if secret information is known– namely, a secret. For steganography to remain undetected, the unmodified cover medium must be kept secret, because if it is exposed, a comparison between the cover and stego media immediately reveals the changes.
- 10. Red color shade variations Drastic & Subtleshade variations Gray Scale shade variations Sample palettesSample palettes
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- 12. WHY BARCODING? • Encodingthe natural history collection data as advanced commercial barcode is described. • Textual information associated with other digital resources such as image, video files of biological samples encoded as barcode for faster and accurate retrieval
- 13. CURRENT BARCODE CONTENTSCURRENTBARCODE CONTENTS IN MH PU BSI 121760 COUNTRY STATE CITY INSTITUTE ID NUMBER
- 14. BarCode Format IN MHPU BSI 121760 CODE 128 (LINEAR)
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- 17. Image and SearchableTextual DataImage and Searchable Textual Data • 121760;BSI;Pune;#6;INM121760;BSI;Pune;#6;INM HPUBSI121760;;1;;;;V.P.HPUBSI121760;;1;;;;V.P. Prasad;173745;;flowerinPrasad;173745;;flowerin g;India;;5;;;;31/11/1995;3g;India;;5;;;;31/11/1995;3 1/10/1995;;;Head;C.Com1/10/1995;;;Head;C.Com prerrus;#6;pune;;1;;rao@prerrus;#6;pune;;1;;rao@ hotmail.com;;cyperaceaehotmail.com;;cyperaceae ;5650196;;;3;karnataka;;;5650196;;;3;karnataka;; Cyperus;Rao;V.P.prasad;Cyperus;Rao;V.P.prasad; c:sampada/image1;#11;Kc:sampada/image1;#11;K arwad_beach,N.kannara;arwad_beach,N.kannara; #5;1;Botanical_survey_of#5;1;Botanical_survey_of _India;3;;;2;411001;24;;;;_India;3;;;2;411001;24;;;; Cyperus_comprerrus;;;;cCyperus_comprerrus;;;;c omprerrus;comprerrus;momprerrus;comprerrus;m aharashtra;accepted;#20aharashtra;accepted;#20 ;5650195;25;;;;1995;;5650195;25;;;;1995;
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- 19. Steganography Tools • Nicetext (Cipher-text to Innocuous text) • OutGuess (PNM and JPEG) • Pretty Good Envelope (Binary into Large Binary) • Secure Engine (JPEG,BMP,Text) • Snow (ASCII text) • Stealth (PGP 2.x) • Steghide( WAV,BMP,AU,blowfish encryption, MD5)
- 20. Image Hide ImageHide is a steganography program which hides large amounts of text in images. Even after adding bytes of data, there is no increase in size of the image. Image looks the same to normal paint packages.
- 21. How do youDetect it ?How do you Detect it ? Only through a direct, visualOnly through a direct, visual comparison of the original andcomparison of the original and processed image can the analystprocessed image can the analyst detect the possible use ofdetect the possible use of Steganography.Steganography. Because many times the suspectBecause many times the suspect system only stores the processedsystem only stores the processed image, the analyst has nothing toimage, the analyst has nothing to use as a comparison anduse as a comparison and generally has no way to tell thatgenerally has no way to tell that the image in question containthe image in question contain hidden data.hidden data.
- 22. Steganography Detection • Stegdetectis an automated tool for detecting steganographic content in images. • It is capable of detecting different steganographic methods to embed hidden information in JPEG images.
- 23. THE DEFENCE Information SecurityTraining. Strategic Alignment and Execution through customized and personalized framework focused on specific risks. 1) Confidential communication and secret data storing 2) Protection of data alteration
- 24. Conclusion • Clearly, softwarecan not automatically be executed from images in which it has been embedded by merely opening them. • Action is necessary from the user or application that placed the data in the picture in the first place.