Individual skill
ctf-crypto
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.
ctf-crypto/SKILL.md
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- agent-skills Repository topic
- claude-code-skills Repository topic
- ctf Repository topic
- security Repository topic
- claude-code Repository topic
- codex Repository topic
- codex-cli Repository topic
- gemini Repository topic
- gemini-cli Repository topic
- opencode Repository topic
- engineering Derived category
Files and excerpt
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Browse files
SKILL.mdcore · 42,070 bytesSKILL.mdcore · 42,070 bytesSKILL.mdcore · 42,070 bytesSKILL.mdcore · 42,070 bytesSKILL.mdcore · 42,070 bytesSKILL.mdcore · 42,070 bytesSKILL.mdcore · 42,070 bytesSKILL.mdcore · 42,070 bytesadvanced-math.mddoc · 41,343 bytesclassic-ciphers.mddoc · 29,160 bytesdh-attacks.mddoc · 6,469 bytesecc-attacks.mddoc · 41,872 bytesexotic-crypto-2.mddoc · 20,113 bytesexotic-crypto.mddoc · 37,728 byteshistorical.mddoc · 4,613 byteslattice-and-lwe.mddoc · 33,920 bytesmodern-ciphers-2.mddoc · 29,887 bytesmodern-ciphers-3.mddoc · 27,902 bytesmodern-ciphers-4.mddoc · 24,784 bytesmodern-ciphers.mddoc · 36,378 bytespost-quantum.mddoc · 4,333 bytesprng-attacks.mddoc · 12,462 bytesprng.mddoc · 43,509 bytesrsa-attacks-2.mddoc · 47,234 bytesrsa-attacks.mddoc · 58,667 bytesstream-ciphers.mddoc · 34,006 byteszkp-and-advanced.mddoc · 21,179 bytes
Read excerpt
# 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):**
```bash
pip install pycryptodome z3-solver sympy gmpy2 hashpumpy fpylll py_ecc
# Coppersmith (optional): pip install coppersmith
# Alternative Coppersmith lib: git clone https://github.com/jvdsn/crypto-attacks ~/.ctf-tools/crypto-attacks && pip install -r ~/.ctf-tools/crypto-attacks/requirements.txt
```
**Linux (apt):**