IDNTEQ

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

This is a Jekyll-based personal/company website for IDNTEQ, hosted on GitHub Pages at lsadehaan.github.io. It uses the “Serial Programmer” theme and includes a blog section and interactive EMV/cryptography tools.

Build Commands

# Install dependencies
bundle install

# Run local development server
bundle exec jekyll serve

# Build for production
bundle exec jekyll build

Architecture

Content Structure

• _config.yml - Site configuration (title, plugins, collections)
• _data/author.yml - Author/company information displayed in bio
• all_collections/_posts/ - Blog posts in markdown with YAML front matter
• index.md - Blog listing page (uses blog layout)
• emvtools.md - Interactive EMV tools page (uses toolpage layout)

Layouts (_layouts/)

• blog.html - Blog index with post listing
• post.html - Individual blog post
• toolpage.html - Full-width page for tool interfaces

Key Files

• emvtools.md - Contains all EMV tool implementations as inline JavaScript:
  • RSA operations (public/private key operations)
  • Hex Manipulator (file upload, byte offset display, parity adjustment)
  • CPS Parser (EMV personalization file parsing)
  • Hash Calculator (SHA-1, SHA-256)
  • ELO Certificate Parser (.req file parsing)
  • Issuer Certificate Validator

Code Conventions

• Prettier config: 2-space tabs, 80 char width, double quotes
• Do not modify assets/js/categories.js - generates category pill links
• JavaScript for EMV tools is embedded in emvtools.md within <script> tags

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