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Possible Duplicate:
Steganography software

I want to hide files inside of a picture. The files may be music or video. Is it technically possible to do this? If so, how?

I searched on Google to find methods,suggest some methods for beginners ,i don't know where to start from,so guide me

Important note : Modifying the size of an image up to certain extent e.g
before hiding image size : 1mb
after hiding image size can be up to 4mb.

i referred following url's:

martinolivier.com/open/stegoverview.pdf
www.garykessler.net/library/steganography.html
www.jjtc.com/ihws98/jjgmu.html
pcplus.techradar.com/.../secrets-of-steganography/ - United Kingdom

these are some examples sir

please note the answers were marked for hiding data inside image with software

BlueBerry - Vignesh4303
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  • The thought may be crazy since lot of encryption programs available,i wish to try something new, – BlueBerry - Vignesh4303 Jul 27 '12 at 06:31
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    Try refining your search with the term [steganography](http://en.wikipedia.org/wiki/Steganography) – Mike Fitzpatrick Jul 27 '12 at 06:39
  • You cannot do this without changing the image data in some way, if you want to embed data in the image and retain the same size then you will have to reduce the image quality. Your note of "without modifying the size of an image" is an impossible requirement and as such I am voting to close. – Mokubai Jul 27 '12 at 08:12
  • without modifying certain extent – BlueBerry - Vignesh4303 Jul 27 '12 at 08:14
  • Fair enough, that seems more reasonable. Have you already found some tools that do the job? Steganography tools as suggested by Mike do exist, have you tried any and found them lacking in features? [Lifehacker](http://lifehacker.com/230915/geek-to-live--hide-data-in-files-with-easy-steganography-tools) has a neat guide on tools that do this. – Mokubai Jul 27 '12 at 08:27
  • @- ping mokubai "sir i found some tools but all explaining about merging files" e.g http://www.howtogeek.com/119365/how-to-hide-zip-files-inside-a-picture-without-any-extra-software/ – BlueBerry - Vignesh4303 Jul 27 '12 at 08:30
  • Vignesh, you shouldn't write `@- ping mokubai`, but `@Mokubai`. Please click the "help" button to see another example. In general, just write @username. – slhck Jul 27 '12 at 08:58
  • @Mokubai please review my question sir – BlueBerry - Vignesh4303 Jul 28 '12 at 13:10
  • @sathya please review my question sir – BlueBerry - Vignesh4303 Jul 28 '12 at 13:10
  • @Journeyman Geek please review my question sir – BlueBerry - Vignesh4303 Jul 28 '12 at 13:11
  • The answer is that **you don’t**. You can easily append a file to a picutre without any special tools, but if you want to hide it as well, then you *must* use special programs. – Synetech Jul 28 '12 at 13:15
  • @Synetech i edited question sir please review it – BlueBerry - Vignesh4303 Jul 28 '12 at 13:21
  • @Synetech i dont know where to begin from please guide me – BlueBerry - Vignesh4303 Jul 28 '12 at 13:22
  • I told you, if you want to really hide it, then you need stego software because Windows does not come with anything that can do what you want. What do you want or *need* to do? – Synetech Jul 28 '12 at 17:53
  • Let me get this right. You want to do steganography without using steganography tools? I am kind of getting the idea that we are either misunderstanding what you are trying to do or you do not understand the limitations of computer software. If you are wanting you can hide a file "behind" a file using [Alternate Data Streams](http://www.windowsecurity.com/articles/alternate_data_streams.html) on Windows computers. Please could you explain exactly what you are trying to achieve and what you have tried because at the moment what you are asking for is sounding kind of impossible. – Mokubai Jul 29 '12 at 08:47
  • @Mokubai sir i Try to achieve Manually the work done by software Like Stegomagic,as you mentioned its impossible I mentioned the Articles i refereed to do it, i agree with your link "Alternate data stream link" but if you have time please read this PDF sir martinolivier.com/open/stegoverview.pdf i found it possible – BlueBerry - Vignesh4303 Jul 29 '12 at 08:56
  • Steganography is completely possible, but you've reworded your title to exclude using those kinds of tools. Are you now wanting to learn how to do it yourself (in which case teaching you is outside the remit of this site) or are you wanting to do something completely different? If you want to discuss this rather than bash a comment thread and work out how or if we can help you I suggest checking out our [chat](http://chat.stackexchange.com/rooms/118/root-access) room. – Mokubai Jul 29 '12 at 10:47

3 Answers3

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Hiding data inside inside an image is done by using steganography, this method can be used to hide data inside other files types too for example mp3 and video to name a few.

I can't recommend any particular software but a quick web search finds this free windows tool QuickStego. It shouldn't be hard for you to find more if this doesn't fit your needs.

Be aware of it's limitations though.
Steganography just hides the data and unless you also encrypt it it can be extracted by tools such as Stegdetect.

You can read more about steganography and ask questions about it over on security.stackexchange.com

Nifle
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Yes it is possible. But I don't really get why you would go through such trouble as there are really good encryption programs out there.

How to Hide Zip Files Inside a Picture Without any Extra Software

The process involves using the command prompt and adding the files together with the /B switch

copy /B picture.gif+YourMenu.zip newfile.gif
mmdemirbas
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wbeard52
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Try StegoMagic! This software can be used to hide text files inside image file, and you can also hide any file into any file. By the way in the field of encryption software, I like Truecrypt the most, it's free and powerful. I recommend you to try it. I hope this will help you!

thuyein
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