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Stegger: Hide encrypted data in images using steganography

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  Author Author  
Picture of Warren Smith
Name: Warren Smith <contact>
Classes: 4 packages by
Country: United Kingdom United Kingdom
Age: ???
All time rank: 51226 in United Kingdom United Kingdom
Week rank: 244 Up12 in United Kingdom United Kingdom Up
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  Detailed description   Download Download .zip .tar.gz   Install with Composer Install with Composer  
This class can be used to encrypt data (messages, files) and hide that data in images using steganography techniques. Steganography is the art and science of writing hidden messages in such a way that no one apart from the intended recipient knows of the existence of the message; this is in contrast to cryptography, where the existence of the message itself is not disguised, but the content is obscured.

It reads a given image in GIF, JPEG or PNG formats, encrypts data supplied by the user (a message, a file, a collection of both) and hides the encrypted data in the image by making subtle colour changes to certain pixels to store the data in the image symbolically. The resulting image is generated in PNG format (because PNG is lossless).

It can also perform the reverse operation by extracting the original data previously stored in an image using this package.

The advantage of steganography over cryptography alone is that messages do not attract attention to themselves, to messengers, or to recipients. An unhidden encrypted message, no matter how unbreakable it is, will arouse suspicion and may in itself be incriminating, as in some countries encryption is illegal.

  Classes of Warren Smith  >  Stegger  >  Download Download .zip .tar.gz  >  Support forum Support forum (7)  >  Blog Blog  >  RSS 1.0 feed RSS 2.0 feed Latest changes  
Name: Stegger
Base name: stegger
Description: Hide encrypted data in images using steganography
Version: 0.6
PHP version: 4.3
License: GNU Lesser General Public License (LGPL)
All time users: 2623 users
All time rank: 1348
Week users: 5 users
Week rank: 291 Up
 
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  Groups  
Group folder image Graphics Colors, images, charts and picture formats View top rated classes
Group folder image Cryptography Encrypting, decrypting and hashing data View top rated classes


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All time: Good (84%) Good (84%) Good (81%) Good (82%) - - Sufficient (66%) 379
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  Pages that reference this package  
Asegur@IT Madrid..
Madrugón pa poca cosa, me esperaba algo mas orientado a profesionales de las IT..
Protect your files by hiding them within other files
I found this new technique yesterday...

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  Files folder image Files  
File Role Description
Files folder imagedocs (3 files, 1 directory)
Files folder imageexamples (1 file)
Accessible without login Plain text file Stegger.class.inc.php Class The main class

  Files folder image Files  /  docs  
File Role Description
Files folder imageimages (6 files)
  Accessible without login Plain text file LICENSE Lic. The license agreement
  Accessible without login Plain text file README Doc. README documentation in plain text
  Accessible without login HTML file README.html Doc. README documentation in HTML format

  Files folder image Files  /  docs  /  images  
File Role Description
  Accessible without login Image file 0.jpg Photo An image to explain steganography
  Accessible without login Image file 1.jpg Photo An image to explain steganography
  Accessible without login Image file 2.jpg Photo An image to explain steganography
  Accessible without login Image file 3.jpg Photo An image to explain steganography
  Accessible without login Image file 4.jpg Photo An image to explain steganography
  Accessible without login Image file 5.jpg Photo An image to explain steganography

  Files folder image Files  /  examples  
File Role Description
  Accessible without login Plain text file index.php Example An example script of how to use Stegger

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