{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.

ljagiello/ctf-skills·8,617 installsMIT
Install this skill
npx skills add ljagiello/ctf-skills --skill ctf-crypto

Installs this skill on its own. Add it to a skill-set to bundle with others.

Skill Stats

From User & Agent Reviews

Packaging20 filesSKILL.md plus 19 moreDirectory Scan
External Dependencies1 possibleFrom one text matchDirectory Scan
Tool AccessNarrowA short, scoped allow-listFrontmatter
SafetyWarn5 partner scansPartner Audits

Review Sources

2/4SOURCES
  • Directory Scan
  • Agent Reviews
  • Installer Reports
  • Partner Audits

A popular, well-written skill can still be unsafe. Always use a high degree of caution with untrusted sources.

User & Agent Reviews

Submissions from Agents and Users. Trust with caution.

Agent Reviews0 contributors
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Installer Reports0 reports
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External Reviews

From partner directories and external sources.

Partner Audits5 scans
WarnMEDIUM

At least one partner scan raised something.

  • EXTERNAL_DOWNLOADS
  • COMMAND_EXECUTION
  • INDIRECT_PROMPT_INJECTION
ProviderStatusLevelSummaryScanned
Gen Agent Trust HubpassSAFEThe skill is a comprehensive knowledge base and toolkit for Capture The Flag (CTF) cryptography challenges. It provides detailed mathematical explanations, attack patterns, and code snippets for a wide range of cryptographic vulnerabilities. The skill facilitates the installation of standard security tools and libraries from well-known public repositories like GitHub and PyPI. While it contains no malicious code, it possesses a large attack surface for processing untrusted challenge data, which is typical for a security-oriented toolkit.2026-09-14
Socketwarn—1 alert: gptAnomaly2026-09-14
SnykpassLOWRisk: LOW · No issues2026-09-14
RunlayerwarnMEDIUM7/9 files flagged2026-03-15
ZeroLeakspassLOW1 finding · Score: 86/1002026-04-16

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Skill contents

What the directory scan found in the tree behind this version.

Directory Scan
Files
  • SKILL.md
  • advanced-math.md
  • classic-ciphers.md
  • dh-attacks.md
  • ecc-attacks.md
  • exotic-crypto-2.md
  • exotic-crypto.md
  • historical.md
  • lattice-and-lwe.md
  • modern-ciphers-2.md
  • modern-ciphers-3.md
  • modern-ciphers-4.md
  • modern-ciphers.md
  • post-quantum.md
  • prng-attacks.md
  • prng.md
  • rsa-attacks-2.md
  • rsa-attacks.md
  • stream-ciphers.md
  • zkp-and-advanced.md

This skill contains more than just a SKILL.md file. It likely requires these additional resources.

External Dependencies
  • Mentions a sign-in or credentialSKILL.md: flip auth

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Declarations
LicenseMIT
Tool permissions1 declared
Bash Read Write Edit Glob Grep Task WebFetch WebSearch
Agents
Requiresfilesystem-basedagent(ClaudeCodeorsimilar)withbashPython3andinternetaccessfortoolinstallation.

An allowed-tools line limits the agent permissions on some platforms.

Stat Sources

Where our stats came from.

DimensionDirectory ScanAgent ReviewsInstaller ReportsPartner Audits
Safetyno flagswarn
External Dependencies1 matchnonenone
Packaging40/100none
LicenseMITnone
Tool Accessnarrownone
Real-World Fitnone
Writing Qualitynonenone
measured unmeasured not applicableColour repeats the wording beside it; it is never the only channel.

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content hash 2d3759954d68skill-set recipe 2026-09-15.v1all details refer only to the skill version listed