View source for JPHS (JPHide/JPSeek)

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

'''JPHS''' (JPHide, JPSeek, JPHSWin, JPHideandSeek) by Allan Latham is a steganography program that hides information in [[JPEG]] files with password protection.

Source code and versions for DOS, Windows and Linux are available.

The design objective was not simply to hide a file but rather to do this in such a way that it is impossible to prove that the host file contains a hidden file. Given a typical visual image, a low insertion rate (under 5%) and the absence of the original file, it is not possible to conclude with any worthwhile certainty that the host file contains inserted data. Above 15% the effects begin to become visible to the naked eye. Of course some images are much better than others when used a host file - plenty of fine detail is good. A cloudless blue sky over a snow covered ski paradise is bad. A waterfall in a forest is probably ideal.

There are reports that the original one crashed all the time. If that happens to you, try the version from SSAK or Steganography Toolkit.


== Links ==
* [https://web.archive.org/web/20130326230517/http://linux01.gwdg.de/~alatham/stego.html Archived homepage]
* [http://ftp.gwdg.de/pub/linux/misc/ppdd/ Downloads]
* [https://github.com/h3xx/jphs Slightly updated source code] ([https://github.com/thezakman/jphs fork])
* [https://old.reddit.com/r/gamedetectives/comments/4zohjq/reaper_steganography/d6ycfwr/ Reddit post on compilation difficulties]
* [https://www.neowin.net/forum/topic/717378-hide-file-inside-a-jpeg-image/ Tutorial]
* [https://www.youtube.com/watch?v=Iepp_B__968 Video tutorial] ([https://christianespinosa.com/blog/3-steps-to-hide-data-in-an-image-using-steganography/ related blog post])
* [https://www.provos.org/p/detection-with-stegdetect/ Stegdetect] - finds JPHS files, includes Stegbreak which can launch dictionary attacks against JPHS
* [https://sourceforge.net/projects/ben4dstegdetect/ Ben-4D Steganalysis Software] - detects JPHSWin files
* [http://www.spy-hunter.com/stegspy Detected by StegSpy]
* [http://eprints.bournemouth.ac.uk/24621/1/NATO%20SPI13%281%29.pdf Study of how well JPHS evades detection]
* [https://github.com/mmtechnodrone/SSAK SSAK] - GUI front end for file identification, data carving, hexdump and steganography programs that includes JPHS
* [https://github.com/DominicBreuker/stego-toolkit Steganography Toolkit] - Docker image with a bunch of steganography tools including JPHS