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QualityJavaScript

CTF Cryptography

by asdfgh1445

CTF Cryptography is a Quality skill for Claude Code, published by asdfgh1445 in ctf-super-hub.

764 stars96 forkson asdfgh1445/ctf-super-hubAdded 2026/08/23+1% in starsRepository updated 2026/04/23
View source on GitHubDownload repo ZIP
agent-skillsai-agentscodexcryptographyctfctf-toolsforensicsosintpwnreverse-engineeringweb-security
Install in seconds
Install CTF Cryptography
Copy CTF Cryptography into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.
terminal
npx degit https://github.com/asdfgh1445/ctf-super-hub/tree/main/ctf-crypto ~/.claude/skills/ctf-crypto

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/asdfgh1445/ctf-super-hub.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file
ctf-crypto/SKILL.md in asdfgh1445/ctf-super-hub
Installs to
~/.claude/skills/ctf-crypto
Collection
One of 25 skills cataloged from this repository
Category
Quality — 1354 skills

What CTF Cryptography does

CTF Cryptography provides quick references for cryptography and math-based CTF challenges, including RSA, AES, ECC, lattices, PRNGs, ZKP, and related attack patterns. Use it when solving crypto puzzles or checking which technique applies.

CTF Cryptography is cataloged under Quality on DirSkills. CTF Cryptography comes from a repository tagged agent-skills, ai-agents, codex, cryptography and ctf.

Documentation

README

CTF Cryptography

Quick reference for crypto CTF challenges. Each technique has a one-liner here; see supporting files for full details with code.

Prerequisites

Python packages (all platforms):

pip install pycryptodome z3-solver sympy gmpy2 hashpumpy fpylll py_ecc

Linux (apt):

apt install hashcat sagemath

macOS (Homebrew):

brew install hashcat

Manual install:

  • SageMath — Linux: apt install sagemath, macOS: brew install --cask sage
  • RsaCtfTool — git clone https://github.com/RsaCtfTool/RsaCtfTool (automated RSA attacks)

Note: gmpy2 requires libgmp — Linux: apt install libgmp-dev, macOS: brew install gmp.

Additional Resources

This is the opening of the README. Read the full README on GitHub.

Commands CTF Cryptography provides

Slash commands named in this skill’s SKILL.md, listed in the order they first appear.

  • /ctf-reverse
  • /ctf-forensics
  • /ctf-pwn
  • /ctf-web
  • /ctf-ai-ml
  • /ctf-misc

Frequently asked about CTF Cryptography

  • What else does asdfgh1445 publish alongside CTF Cryptography?

    CTF Cryptography is one of 25 skills that DirSkills catalogs from asdfgh1445/ctf-super-hub, the repository it ships in. Its siblings there include CTF AI/ML Attack Hub, CTF Binary Exploitation and CTF Challenge Triage. Each one is a separate skill with its own page in this directory, installs the same way CTF Cryptography does, and is maintained by asdfgh1445 in that same repository. The rest of the collection is listed on the asdfgh1445/ctf-super-hub page.

  • How does CTF Cryptography compare to other Quality skills?

    CTF Cryptography ranks #1006 by stars among the 1354 Quality skills in this catalog. The most-starred ones next to it are Benchmark, Benchmark Optimization Loop and API Design Patterns. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of CTF Cryptography against them. Open each page to compare what they document and how they install.

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CTF Cryptography is one of 25 skills cataloged on DirSkills from asdfgh1445/ctf-super-hub.

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