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Steganography

Greg Mitchell COS413 Computer Forensics Professor Tony Gauvin . Steganography. Project Description . Provide an overview of steganography; its uses, how it has adapted to computers, how it works, and steganalysis Use knowledge gained from online research

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Steganography

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  1. Greg Mitchell COS413 Computer Forensics Professor Tony Gauvin Steganography

  2. Project Description • Provide an overview of steganography; its uses, how it has adapted to computers, how it works, and steganalysis • Use knowledge gained from online research • Computer steganography is hard to detect and the more one knows about it the better the chance of detecting it

  3. History • In ancient times messages would be written on wood or stone tablets then covered in wax • Messages would be tattooed on slaves heads, covered by hair, hair shaved off to read. • Invisible ink

  4. Example • Haha you cant • See this

  5. Facts • Steganography is closely related to cryptography • Used by artists/developers to insert digital watermarks into their work • There are tools that allow steg to be used with almost any file type: audio, graphics, text, video, executable, ect • Steg used in graphics hides data by inserting it piece by piece into the last couple of bits that make up pixels

  6. Steganalysis • Steganalysis is the detection of steganography • Many tools available to detect/decode/destroy steganography

  7. Tools • Puff: Italian program, hides files in bmp, jpg, pcx, png, tga, aiff, mp3, next/sun, wav, and Win pe. Provides 16 different encryption algorithms • Invisible Secrets: hides in hpeg, png, bmp, html, and wav. Encryption + other fun tools • TextHide: Scrambles text to hide data within any text file • Stegdetect: Detects steganography In jpeg images

  8. Bad: Procrastination Writers block Did not meet my own expectations Outcomes • Good: • Fun to research • Good sources of data (FBI website)‏ • Understanding of something most people do not know‏

  9. Lessons Learned • Do not procrastinate • Steganography is interesting

  10. Resources • http://home.comcast.net/~ebm.md/stego/softwarewindows.html • http://www.securityfocus.com/infocus/1684 • http://home.comcast.net/~ebm.md/stego/softwarewindows.html • http://www.fbi.gov/hq/lab/fsc/backissu/july2004/research/2004_03_research01.htm

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