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Detecting Weak Cryptography

Agent skill
1 skill
READMEOverview ↓

Scan a source tree for weak cryptographic primitives: MD5 / SHA-1 used for security purposes, DES / 3DES / RC4 ciphers, ECB block mode, custom-built crypto (XOR loops, hand-rolled HMAC), hardcoded IVs, predictable random (Math.random / java.util.Random for crypto seeds), missing certificate verification (verify=False, rejectUnauthorized: false). Use when: pre-merge gate on crypto-touching code, audit before SOC2 / PCI assessment, post-incident review when "we found a weakness in our token signing." Threshold: any call to a known-weak algorithm with non-test context, OR cert verification explicitly disabled, OR a custom crypto loop pattern. Trigger with: "scan weak crypto", "find MD5 usage", "check ECB mode", "audit ssl verify", "weak random".

Install with
Claude CodeCodexCursorGitHub CopilotGemini CLI

Supported by the Atlas install prompt. Skill-specific requirements vary.

Skill stats

Skills1CategorySecurityStars0

About this skill

Scan a source tree for weak cryptographic primitives: MD5 / SHA-1 used for security purposes, DES / 3DES / RC4 ciphers, ECB block mode, custom-built crypto (XOR loops, hand-rolled HMAC), hardcoded IVs, predictable random (Math.random / java.util.Random for crypto seeds), missing certificate verification (verify=False, rejectUnauthorized: false). Use when: pre-merge gate on crypto-touching code, audit before SOC2 / PCI assessment, post-incident review when "we found a weakness in our token signing." Threshold: any call to a known-weak algorithm with non-test context, OR cert verification explicitly disabled, OR a custom crypto loop pattern. Trigger with: "scan weak crypto", "find MD5 usage", "check ECB mode", "audit ssl verify", "weak random".

Quick start

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  2. Send it to your agent. Paste it into your coding agent’s chat and send.
  3. Review the setup. Your agent checks the skill’s instructions, requirements, and installation scope.

Installation guide →

Review, license & listing details
Review the source before using this skill

This is an imported listing. We haven’t certified its safety, license, or compatibility. Skills may include executable scripts.

Automated security scan: Partial

Only SKILL.md was scanned. Supporting files and scripts were not checked. No safety grade has been assigned.

0 potential findings · Scanned 11/4/2026 · Scanner 0.2.1

Content SHA-256: 915743cfa9ac7c8a3967e38b1648bd959bb2579f5f6b8f97ab1ecd1753aece81

About scan coverage and limitations
Original listing metadata

Original name

detecting-weak-cryptography

Original description

Scan a source tree for weak cryptographic primitives: MD5 / SHA-1 used for security purposes, DES / 3DES / RC4 ciphers, ECB block mode, custom-built crypto (XOR loops, hand-rolled HMAC), hardcoded IVs, predictable random (Math.random / java.util.Random for crypto seeds), missing certificate verification (verify=False, rejectUnauthorized: false). Use when: pre-merge gate on crypto-touching code, audit before SOC2 / PCI assessment, post-incident review when "we found a weakness in our token signing." Threshold: any call to a known-weak algorithm with non-test context, OR cert verification explicitly disabled, OR a custom crypto loop pattern. Trigger with: "scan weak crypto", "find MD5 usage", "check ECB mode", "audit ssl verify", "weak random".

About this listing

Category
Security
Reported license
MIT
Listing language (estimated)
English
Review status
Not individually reviewed
Agent compatibility
Atlas installation supports Claude Code, Codex, and Cursor. Skill-specific dependencies and features are checked during setup.
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