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Last Updated | Ratings | Unique User Downloads | Download Rankings | |||||
2005-04-21 (11 years ago) | 74% | Total: 2,936 This week: 4 | All time: 1,222 This week: 267 |
Version | License | Categories | ||||
bmpcrypt 1.0.0 | GNU General Publi... | Graphics, Cryptography |
Description | Author | ||||||||||||||||
BmpCrypt is a class that uses the steganography technique to hide encrypted data within a bitmap image (.BMP). Innovation Award
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BmpCrypt Class is a very simple stenography PHP class that encodes the data in the bitmap image file. There are four levels of encoding available in this class. Level 1 - hides the data with the least-significant bit of image data bytes Level 2 - hides the data with two least-significant bits of image data bytes Level 3 - hides the data with three least-significant bits of image data bytes Level 4 - hides the data with four least-significant bits fo image data bytes Therefore, a 24-bit or 32-bit bitmap file of size 100KB is able to hide about 10 to 12KB of data with level 1 encoding, 20 to 24KB of data with level 2 encoding, 30 to 32KB of data with level 3 encoding, or 45 to 50KB of data with level 4 encoding. |
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Files |
File | Role | Description |
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BmpCrypt_Class.php | Class | BmpCrypt |
BmpCrypt_CmdLine_Example.php | Example | Command Line Example |
Decrypt_Webpage_Example.php | Example | Web Page Example |
Dog.bmp | Photo | Sample Image |
Horse.jpg | Photo | Sample Image |
HorseInDog.bmp | Output | Sample Output |
readme.txt | Doc. | Read Me |
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