Below you will find pages that utilize the taxonomy term “CAPTCHA”

April 7, 2025

C code for CAPTCHA (Login 3)

C code for CAPTCHA (Login 3)

Building a Self-Hosted CAPTCHA System with HAProxy

After preparing the HAProxy server and the authentication Lua verification script, I needed to develop a PNG generator and user authentication mechanism to complete my self-hosted CAPTCHA server. I decided to use C for the core functionality due to its performance and control over system resources..

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The Authentication Flow

My authentication logic follows these key steps:

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