Menu

Individual skill

crypto-misuse

Block weak ciphers, predictable RNG, undersized keys, fast-hash password storage, nonce reuse, and non-constant-time comparison. Use when generating code that hashes, encrypts, or signs, code that compares secrets, MACs, or tokens, or config for key sizes and randomness.

skills/crypto-misuse/SKILL.md

Read pinned source

Source commit eaba88102d91df65a9aa6397e8507c315c018f5e

What was checked

Matches the observed repository HEAD
Yes
Scanner rules are current
Yes
Repository scan complete
No
Skill scan complete
No
Observed behavior
Instructions only
Last checked
Nov 6, 2026

These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.

Install this skill

Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.

Standard SKILL.md format has not been attested at this commit. No installation command is available; inspect the source.

Repository context

Repository stars (not skill ratings)
23
Repository last updated
Aug 14, 2026
License
MIT

Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.

Files and excerpt

File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.

Browse files
Read excerpt

# Cryptographic Misuse

## Rules (for AI agents)

### ALWAYS
- Use a maintained, widely reviewed cryptographic API — the platform's own (Node
  `crypto`, Java JCE, .NET `System.Security.Cryptography`, Go `crypto/*`) or a
  reputable third-party one (PyCA `cryptography`, `golang.org/x/crypto`, Bouncy
  Castle). Prefer high-level, misuse-resistant APIs over assembling low-level
  primitives yourself. In Python, `from Crypto…` resolves to either the abandoned
  `pycrypto` or its maintained fork `pycryptodome` depending on what is installed —
  the import line is identical, so depend on `pycryptodome` explicitly.
- Use a cryptographically secure RNG for anything security-relevant: Python
  `secrets.token_bytes` / `secrets.token_urlsafe`, JS `crypto.getRandomValues` /