Individual skill
cryptographic-practices-auditor
Reviews cipher algorithms, key derivation parameters (Argon2, bcrypt), token signing keys, and TLS settings.
skills/security/cryptographic-practices-auditor/SKILL.md
Source commit d0a9928d24afb7df0fad2f2f35f65d3938a6926a
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- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- Yes
- Repository scan complete
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- Skill scan complete
- No
- Observed behavior
- Instructions only
- Last checked
- Nov 5, 2026
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Repository context
- Repository stars (not skill ratings)
- 27
- Repository last updated
- Aug 20, 2026
- License
- MIT
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README.mddoc · 557 bytesSKILL.mdcore · 1,726 bytesSKILL.mdcore · 1,726 bytesSKILL.mdcore · 1,726 bytesexamples/example.mddoc · 1,029 bytes
Read excerpt
## Purpose
Audit source code and infrastructure configurations for cryptographic weaknesses: obsolete ciphers (MD5, SHA1, DES, RC4), hardcoded encryption keys, weak key derivation functions (KDFs), insecure random number generators, and flawed token signing.
## When to Use
- Reviewing password hashing, encryption at rest, and secret token generation.
- Implementing asymmetric JWT signing (RS256 / EdDSA) or HMAC validation.
- Validating TLS cipher suite configurations and webhook signature verification.
## What to Analyze
1. **Password Hashing**: Use of Argon2id or bcrypt (cost factor >= 12) vs obsolete plain SHA256/MD5.
2. **Symmetric Encryption**: AES-256-GCM / ChaCha20-Poly1305 (authenticated encryption) vs insecure AES-ECB / AES-CBC without HMAC.