{"id":174,"date":"2009-04-21T23:20:52","date_gmt":"2009-04-21T19:20:52","guid":{"rendered":"http:\/\/judepereira.com\/blog\/?p=174"},"modified":"2009-05-11T19:46:00","modified_gmt":"2009-05-11T15:46:00","slug":"simple-steganography","status":"publish","type":"post","link":"https:\/\/judepereira.com\/blog\/simple-steganography\/","title":{"rendered":"Simple Steganography"},"content":{"rendered":"

Wanna hide that information and private things you don’t want your buddies to see? Here is what is called simple steganography. Steganography is the master of black arts. Nobody can ever suspect that there is a simple, easy-to-find drawer in one of your pictures. This works with .png files as I didn’t try it with any other. If the trick works on other file types, please let me know. All set to go? You need a GNU\/Linux terminal or a Mac terminal to do this. Someone please post ways of doing this in Windows!
\nThe Trick:<\/strong>
\nWe have a file called “Secret Song.mp3”. We want to hide this into an image file. Let’s assume that our image file is called “Landscape.png”. First, compress the “Secret Song.mp3” into the .zip type compression. Then type the following in the shell:
\n<\/p>\n

cat Secret Song.mp3.zip >> Landscape.png<\/pre>\n
And we’re done! Whenever you want to take a peek in the drawer, simply rename the picture’s file extension to .zip. In our case, it will be “Landscape.zip”, and drag it into the Unzip window.<\/p>\n
\nSo what really happens…?<\/p>\n
\nThe image viewer only reads the image part of the file as a .png format has a beginning tag and an end tag. It does not read further than the end tag, thus not running into our drawer. The same is with the decompresser.<\/p>\n","protected":false},"excerpt":{"rendered":"
Wanna hide that information and private things you don’t want your buddies to see? Here is what is called simple steganography. Steganography is the master of black arts. Nobody can ever suspect that there is a simple, easy-to-find drawer in one of your pictures. This works with .png files as I didn’t try it with any other. If the trick works on other file types, please let me know. All<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[52,10],"tags":[54,53],"class_list":["post-174","post","type-post","status-publish","format-standard","hentry","category-code","category-linux","tag-steganograph","tag-stego"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pqtyx-2O","jetpack-related-posts":[{"id":694,"url":"https:\/\/judepereira.com\/blog\/visual-basic-6-revisited-linux-wine\/","url_meta":{"origin":174,"position":0},"title":"visual basic 6 revisited – linux – wine","author":"Jude Pereira","date":"August 5, 2010","format":false,"excerpt":"Earlier this year, I had written an article on running Visual Basic 6 on linux under wine, this is an update for it, the prior one is deprecated Getting Visual Basic 6 to work on linux is pretty easy, not much trouble, all the basic things work, as of what\u2026","rel":"","context":"In "another snippet | code"","block_context":{"text":"another snippet | code","link":"https:\/\/judepereira.com\/blog\/category\/code\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":903,"url":"https:\/\/judepereira.com\/blog\/usrlocalbinwaitpid\/","url_meta":{"origin":174,"position":1},"title":"\/usr\/local\/bin\/waitpid","author":"Jude Pereira","date":"April 26, 2011","format":false,"excerpt":"A quick script to wait for a certain pid, then once that quits, execute a command. 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