C Systems

This repository contains core C-language implementations exploring Cryptography, Blockchain, and Networking concepts.
Each folder represents one major area of system-level understanding.

Structure

• cryptography/ → Basic encryption & hashing algorithms (Caesar, XOR, SHA-256 logic)
• blockchain/ → Block creation, linking, and simple chain simulation
• networking/ → Client-server communication using socket programming

Goals

• Understand and manually read/analyze C code.
• Implement, compile, and push working code.