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ctf-cryptoskills.sh · ljagiello

8,937 installs

Provides cryptography attack techniques for CTF challenges. Use when attacking encryption, hashing, signatures, ZKP, PRNG, or mathematical crypto problems involving RSA, AES, ECC, lattices, LWE, CVP, number theory, Coppersmith, Pollard, Wiener, padding oracle, GCM, key derivation, or stream/block cipher weaknesses.

Generates or handles private keys
Hosts contacted: quipqiup.comwww.rfc-editor.org
Credentials it expects: MASTER_KEY
Evidence lines
  • generates_or_handles_keys — SKILL.md: - [rsa-attacks-2.md](rsa-attacks-2.md) - RSA attacks (specialized): RSA p=q validation bypass, cube root CRT gcd(e,phi)>1, factoring from phi(n) multiple, multi
  • generates_or_handles_keys — SKILL.md: - [exotic-crypto-2.md](exotic-crypto-2.md) - Exotic algebraic structures (Part 2, 2017+): BB-84 QKD MITM, ElGamal trivial DLP (B=p-1), Paillier LSB oracle via h
  • generates_or_handles_keys — SKILL.md: - **Weak key derivation (public key hash XOR):** AES key derived from `SHA256(public_key) XOR seed` is fully recoverable without private key; "hybrid" RSA+AES p
  • generates_or_handles_keys — SKILL.md: - **Weak keygen via base representation:** Primes `p = kp*B + tp` with small kp create mixed-radix structure in n; brute-force kp*kq (2^24) to factor
  • generates_or_handles_keys — SKILL.md: - **RSA Montgomery reduction timing attack:** Leaked extra-subtraction counts in Montgomery multiplication reveal private key bits MSB-to-LSB via statistical co

Our disclosure is a static description of what the skill declares and does; it is not a safety verdict. Source record: www.skills.sh/ljagiello/ctf-skills/ctf-crypto.

Install

npx skills add ljagiello/ctf-skills@ctf-crypto

Copied from the registry's documented install form. Read the disclosure above first; it is the whole point of this page.

Observed record

First seen 2026-10-19. The weekly re-scan will record install growth and any change to the skill's content hash; one observation so far.

Cite this page

Sato Hub. "ctf-crypto — skill disclosure on Sato Hub." Sato Hub, updated 2026-10-23, accessed 2026-10-23. https://satohub.ai/skills/skillssh%3Aljagiello%2Fctf-skills%2Fctf-crypto

Data last refreshed 2026-10-23; this page is rebuilt daily. Citations carry the date so a reader can tell which snapshot a claim came from. Catalog data is licensed CC-BY-4.0.