A comprehensive attack reference for crypto CTF challenges, covering everything from Vigenère to lattice reduction. The skill organizes techniques across a dozen markdown files, from classical ciphers and padding oracles to LWE/CVP, ECDSA nonce reuse, and exotic stuff like braid group crypto. Each attack gets a one-liner in the main file plus full code in supporting docs. Setup requires Python crypto libraries, optionally SageMath and RsaCtfTool for automated RSA attacks. The breadth is impressive, classical to post-quantum, but you'll need to know when to reach for it versus a reverse engineering skill. Best used when you've identified the crypto primitive and need the specific exploit technique.
npx skills add https://github.com/ljagiello/ctf-skills --skill ctf-crypto