Forum Masters Degree
Joined: 10 Dec 2007
Posts: 518
Location: Nashville, TN USA
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windows and 7zip
with windows, you can use a command line tool to combine a .rar file with a jpeg. You can of course put any file in a .rar, so you can then put any file you want to "inside" a picture.
Using 7zip, make a new archive for any file you'd like, just make sure you pack it as a .rar file.
get the image you want to use as the container, make sure it is a .jpeg, if you want to follow my command line text letter by letter, rename it "SECRET.JPG" (without Quotes), but you don't have to, you can name it anything you want, just make sure you use the right filename when you use the command line otherwise it won't work.
Make a text document that says "hello World", or anything you want really, and File -> Save As "SECRET.TXT"
Find the new SECRET.TXT file and use 7zip to change it to a .rar, name it SECRET.TXT.RAR
put both the .rar and the .jpeg in a folder off the root directory, like C:\SECRET
you can put it in your my documents folder but then you have to type ALOT more:
C:\Documents and Settings\[profile name]\My Documents\SECRET (where [profile name] is the name of your profile, this is depending on what you named your profile so the above line won't work as I have it typed.
so just put the SECRET folder in your root directory...
in windows xp, hold down the windows key and press r
Type "CMD" (without the quotation marks) and hit enter
type "CD \" (again and as always, without quotation marks)
type "CD SECRET"
type "copy /b SECRET.JPG + SECRET.TXT.RAR CONTAINER.JPG
You can right-click CONTAINER.JPG and use 7zip to unzip it to reveal the text file inside. Of course, any file will work, but it does start to get suspicious if you have a 700MB 800x600 JPG file on your hard drive...
Anything I haven't gone over here can be found with a quick google search, and a good use of common sense.
This is one reason why windows has so many problems, you can put any file in jpg for one, and for two, the filename's extension determines how the OS treats the file. In Linux, you don't have this blatant security risk.
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“It’s no wonder that truth is stranger than fiction. Fiction has to make sense.” - Mark Twain |
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