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PHP → Scripts and Programs → Security Systems

dm.KittenAuth

This package implements a CAPTCHA validation solution using groups of images and associated questions. It can generate a form to let a user pick images for one or more groups of images stored in a MySQL database. The user must pick the ri...
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Awarescripts.com Image Captcha

This script creates a random image captcha saves and locks the file containing the answer to it, then when it is submitted checks to make sure what the user entered and the image match. The answer is deleted after the check whether or not it is corre...
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Phoca CAPTCHA

Phoca CAPTCHA class is a small free class to show CAPTCHA image in your form. You can safe your form from Spam. You need PHP with GD library but you need not TTF support.
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EMC Base Logger

EMC Base Logger in a Powerful IP Logging / Banning tool. This great security software is MySQL driven, meets all PHP 4 / 5 requirements. It easily installs on any Apache Web server or site system. EMC is a simple solution to keeping those unwanted gu...
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TheCAPTCHA

TheCAPTCHA - a powerful PHP script to protect your site from spambots. Free and open-source. Easy to install. TheCAPTCHA is creating much more secure from break CAPTCHA images than any script of previous generation.
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Encaps CAPTCHA

Simple but effective CAPTCHA script, tested on live forum with 200-500 visitors per day - about 4% of spam since CAPTCHA is implemented. Requirements: PHP and GD. Detailed installation instructions on the website.
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Honso_Email-Vault

This PHP script protects your email address from malicious site crawling spam robots. This script uses many methods of protection. The most obvious is the use of a CAPTCHA that expires every 3 min to prevent brute force attacks. There are some hidde...
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Captcha - in 5 lines of code

This Captcha is packaged into a class and therfore only needs 5 lines of code to be entered into your code and the creation of a folder with writable permissions for the image. All the variables are held inside the class for easy editing Its as e...
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KB Captcha PHP Script

An easy to implement Captcha Script which does not require images but works on text. Now you can protect your pages with the use of Captcha, you can now have some additional security/authentication/n ospam to your web pages. This script is based on t...
  • Platforms
    • Linux,
    • Windows
  • Licenses
    • Freeware
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RSA

This class is a pure PHP implementation of the RSA public key encryption algorithm. It can generate the public and private keys from two prime numbers. The public key should be used to encrypt the data. Only the private key can be used to...
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