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Cybersecurity-Projects/PROJECTS/beginner/caesar-cipher
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CarterPerez-dev ef315b072b chore: add demos for projects, update haskell-reverse-proxy modules, refresh siem assets 
- Add DEMO.md and screenshots for bug-bounty-platform, hash-cracker,
  linux-cis-hardening-auditor, simple-port-scanner, simple-vulnerability-scanner,
  systemd-persistence-scanner, base64-tool, caesar-cipher, dns-lookup,
  metadata-scrubber-tool, network-traffic-analyzer, siem-dashboard
- Link DEMO.md from project READMEs
- Add .gitignore entries for DEMO-TRACKER and simple-port-scanner build dir
- Restructure haskell-reverse-proxy with DDoS, Fingerprint, ML, RateLimit, WAF,
  Geo, and Honeypot modules; drop superseded research docs and old Makefile
- Refresh siem-dashboard dashboard.png and rename alerts.png to alert-detail.png
 		2026-04-26 23:12:48 -04:00
..
assets chore: add demos for projects, update haskell-reverse-proxy modules, refresh siem assets 2026-04-26 23:12:48 -04:00
learn add and create all learn/ folders for beginner projects 2026-01-31 15:13:31 -05:00
src/caesar_cipher feat: did a couple things idk 2026-02-28 14:08:36 -05:00
tests feat: did a couple things idk 2026-02-28 14:08:36 -05:00
.gitignore feat: did a couple things idk 2026-02-28 14:08:36 -05:00
.style.yapf Phase 1.1: Organize PROJECTS by difficulty level 2026-01-29 02:41:15 -05:00
DEMO.md chore: add demos for projects, update haskell-reverse-proxy modules, refresh siem assets 2026-04-26 23:12:48 -04:00
Justfile feat: complete network-traffic-analyzer 2026-02-01 20:26:28 -05:00
LICENSE - Standardize READMEs and add justfiles across all 14 projects 2026-02-11 07:01:25 -05:00
README.md chore: add demos for projects, update haskell-reverse-proxy modules, refresh siem assets 2026-04-26 23:12:48 -04:00
pyproject.toml Phase 1.1: Organize PROJECTS by difficulty level 2026-01-29 02:41:15 -05:00
uv.lock chore(deps): bump pytest in /PROJECTS/beginner/caesar-cipher 2026-04-15 11:01:27 +00:00

README.md 

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Cybersecurity Projects Python License: AGPLv3 PyPI

Caesar cipher encryption, decryption, and brute-force cracking CLI with frequency analysis.

This is a quick overview — security theory, architecture, and full walkthroughs are in the learn modules.

Screenshots & demo →

What It Does

  • Encrypt text using Caesar cipher with a specified shift key
  • Decrypt ciphertext back to plaintext with the original key
  • Brute-force crack unknown ciphertext by testing all 26 shifts
  • Frequency analysis ranking to identify the most likely plaintext
  • Clean Rich terminal output with colored tables

Quick Start

uv tool install caesar-salad-cipher
caesar-cipher encrypt "HELLO WORLD" --key 3

[!TIP] This project uses just as a command runner. Type just to see all available commands.

Install: curl -sSf https://just.systems/install.sh | bash -s -- --to ~/.local/bin

Commands

Command Description
caesar-cipher encrypt Encrypt plaintext using a specified shift key
caesar-cipher decrypt Decrypt ciphertext back to plaintext with the original key
caesar-cipher crack Brute-force all 26 shifts with frequency analysis ranking

Learn

This project includes step-by-step learning materials covering security theory, architecture, and implementation.

Module Topic
00 - Overview Prerequisites and quick start
01 - Concepts Security theory and real-world breaches
02 - Architecture System design and data flow
03 - Implementation Code walkthrough
04 - Challenges Extension ideas and exercises

License

AGPL 3.0