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Class: Stegger


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  • Supplied by:

    Picture of Warren Smith
    Name: Warren Smith <e-mail contact>
    Published packages: 4
    Country: United Kingdom United Kingdom - PHP jobs in United Kingdom
    Home page: http://www.iwannaworkatgoogle.com/
    Age: ???
    All time rank: 564
    Week rank: 518

    Browse this author's classes

  • 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

  • Detailed description:

    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.

  • Freshmeat project:

    Project record: stegger
    Popularity score: 74.01 (0.12%)
    Popularity rank: 32,578 (PHP Classes: 233)
    Vitality score: 1.00 (0.00%)
    Rating: Not yet rated Please rate this class in Freshmeat

  • User ratings:

    Ratings
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    All time:
    Good (85.0%)
    Good (85.0%)
    Good (80.0%)
    Good (81.3%)
    -
    -
    Sufficient (67.1%)
    241
    Month:
    Not yet rated by the users

  • Trackback links:

    Link Description
    Protect your files by hiding them within other files I found this new technique yesterday...
    Latest blog trackback links Latest blog trackback links

  • Applications that use this class:

    No application links were specified for this class.
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  • Files:

    File Role Description
    Files folder image docs/images
      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 docs
      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 examples
      Accessible without login Plain text file index.php Example An example script of how to use Stegger
    Accessible without login Plain text file Stegger.class.inc.php Class The main class
    Download all files: stegger.tar.gz stegger.zip
    NOTICE: if you are using a download manager program like 'GetRight', please Login before trying to download this archive.

 
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