F5 - Revision history

Parchivist at 20:43, 1 September 2023

2023-09-01T20:43:55Z

Parchivist at 20:36, 1 September 2023

2023-09-01T20:36:45Z

Parchivist at 20:30, 1 September 2023

2023-09-01T20:30:22Z

Parchivist at 19:22, 1 September 2023

2023-09-01T19:22:46Z

Parchivist at 18:24, 1 September 2023

2023-09-01T18:24:44Z

Parchivist: Created page with "{{FormatInfo |formattype=electronic |subcat=Encryption |subcat2=Steganography }} '''F5''' by Andreas Westfeld is an algorithm for BMP, GIF, and JPEG steganography..."

2023-09-01T18:10:20Z

Created page with "{{FormatInfo |formattype=electronic |subcat=Encryption |subcat2=Steganography }} '''F5''' by Andreas Westfeld is an algorithm for BMP, GIF, and JPEG steganography..."

New page

{{FormatInfo
|formattype=electronic
|subcat=Encryption
|subcat2=Steganography
}}

'''F5''' by Andreas Westfeld is an algorithm for [[BMP]], [[GIF]], and [[JPEG]] steganography.

Release 11 adds the switch "-c comment" to change or remove the default comment in the file. The JPEG compressor's comment header "JPEG Encoder Copyright 1998, James R. Weeks and BioElectroMech. " is very uncommon. If you change (or remove: -c "") the comment header, also the version of the APP0 marker is changed to the more common version 1.01.

nsF5 (non shrinkage F5) is an evolution of F5 that can hide more information.

== Implementations ==
* [https://web.archive.org/web/20060430021157/http://wwwrn.inf.tu-dresden.de/~westfeld/f5r12beta.zip F5 Release 11+] (attempts to address one of the attacks)
* F5 Release 11
** [http://www2.htw-dresden.de/~westfeld/publikationen/f5r11.zip Original]
** [https://github.com/daniellerch/stego-collection/tree/master/F5 GitHub mirror]
** [https://github.com/matthewgao/F5-steganography GitHub mirror with Docker image]
* [[Stegosuite]]
* [https://code.google.com/archive/p/f5-steganography/ F5 Steganography in Java] ([https://github.com/abronte/f5-steganography GitHub])
* [https://digitnet.github.io/f5-algorithm/ Matlab implementation of F5] ([https://github.com/digitnet/f5 GitHub])

== Links ==
* [https://web.archive.org/web/20070119170237/http://wwwrn.inf.tu-dresden.de/~westfeld/f5.html Archived homepage]
* [https://digitnet.github.io/assets/pdf/f5-a-steganographic-algorithm-high-capacity-despite-better-steganalysis.pdf F5—A Steganographic Algorithm- High Capacity Despite Better Steganalysis]
* [http://www.ws.binghamton.edu/fridrich/Research/f5.pdf Steganalysis of JPEG Images: Breaking the F5 Algorithm]
* [https://daniellerch.me/stego/aletheia/f5-attack-en/ Practical attack on F5]
* [http://dde.binghamton.edu/kodovsky/pdf/Fri07-ACM.pdf Statistically Undetectable JPEG Steganography: Dead Ends, Challenges, and Opportunities] (nsF5)

@@ Line 26: / Line 26: @@
 * [https://digitnet.github.io/assets/pdf/f5-a-steganographic-algorithm-high-capacity-despite-better-steganalysis.pdf F5—A Steganographic Algorithm- High Capacity Despite Better Steganalysis]
 * [http://www.ws.binghamton.edu/fridrich/Research/f5.pdf Steganalysis of JPEG Images: Breaking the F5 Algorithm]
 * [https://daniellerch.me/stego/aletheia/f5-attack-en/ Detected by Aletheia]
 * [https://www.provos.org/p/detection-with-stegdetect/ Detected by Stegdetect]
 * [http://dde.binghamton.edu/kodovsky/pdf/Fri07-ACM.pdf Statistically Undetectable JPEG Steganography: Dead Ends, Challenges, and Opportunities] (nsF5)
 * [https://digitnet.github.io/m4jpeg/m4jpeg-tool/dct-based-mod4-compared-to-f5.htm Mod4 vs F5]

← Older revision		Revision as of 18:24, 1 September 2023
Line 29:		Line 29:
	* [https://daniellerch.me/stego/aletheia/f5-attack-en/ Practical attack on F5]		* [https://daniellerch.me/stego/aletheia/f5-attack-en/ Practical attack on F5]
	* [http://dde.binghamton.edu/kodovsky/pdf/Fri07-ACM.pdf Statistically Undetectable JPEG Steganography: Dead Ends, Challenges, and Opportunities] (nsF5)		* [http://dde.binghamton.edu/kodovsky/pdf/Fri07-ACM.pdf Statistically Undetectable JPEG Steganography: Dead Ends, Challenges, and Opportunities] (nsF5)
		+	* [https://digitnet.github.io/m4jpeg/m4jpeg-tool/dct-based-mod4-compared-to-f5.htm Mod4 vs F5]

@@ Line 13: / Line 13: @@
 == Implementations ==
-* [https://web.archive.org/web/20060430021157/http://wwwrn.inf.tu-dresden.de/~westfeld/f5r12beta.zip F5 Release 11+] (attempts to address one of the attacks)
+* [https://web.archive.org/web/20060430021157/http://wwwrn.inf.tu-dresden.de/~westfeld/f5r12beta.zip F5 Release 11+]
 * F5 Release 11
 ** [http://www2.htw-dresden.de/~westfeld/publikationen/f5r11.zip Original]

@@ Line 16: / Line 16: @@
 * F5 Release 11
 ** [http://www2.htw-dresden.de/~westfeld/publikationen/f5r11.zip Original]
-** [https://github.com/daniellerch/stego-collection/tree/master/F5 GitHub mirror]
+** [https://github.com/matthewgao/F5-steganography GitHub mirror with some bugfixes and Docker image]
 ** [https://github.com/matthewgao/F5-steganography GitHub mirror with Docker image]
 * [[Stegosuite]]
 * [https://code.google.com/archive/p/f5-steganography/ F5 Steganography in Java] ([https://github.com/abronte/f5-steganography GitHub])