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Class: Stegger
24076
Class: Stegger
http://www.phpclasses.org/browse/package/3312.html
Hide encrypted data in images using steganography
PHP > Scripts and Programs > Security Systems
Oct 15, 2006
Warrem Smith
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Other links at PHP > Scripts and Programs > Security Systems
This protection mechanism is known as CAPTCHA (completely automated public Turing test to tell computers and humans apart).
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NXLicenser uses LocalKeys to license scripts. On the scripts first run it callsback home to get the encrypted data for the localkey then writes the localkey. If your script is not licensed, suspended, or expires it will not work. But if it is licensed and every thing is fine it will work. After that the script callsback once every 7 days to fetch a new localkey to update the license data. By using this method the script will not callback on every page load making it run faster while still being protected.
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PHPCoder is a Web-based frontend to the Turck MMCache encoding functions, which are similar to the Zend Encoder product. PHPCoder enables you to encode your PHP scripts and applications into non-reversible bytecode, thus preventing users of your programs from viewing or altering the source code while having full functionality. Another excellent use for PHPCoder is to encode your applications PHP configuration files, that way someone viewing your source code does not see your databae login and password information. It also allows you to set restrictions on the encoded scripts, you can lock a script to a particular server IP address, server host name, visitor IP, or even place a time limit on the script so it will expire after a configurable amount of time. You specify Text, HTML, or PHP code that should be prepended and appended to each file before it is encoded, allowing you to easily and securely implement your own licensing scheme
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5. captcha
The name of this project tells everything by itself ! It's a little captcha generator which creates human-readable check codes which will keep you away from spammers and flooders. It requires GD library, Session handling and some files linked at the bottom of this page.
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