unboundcompute/security-agent-skills · skills/finding-crypto-misuse/SKILL.md

finding-crypto-misuse skillA

finding-crypto-misuse is agent-read markdown (skill) from unboundcompute/security-agent-skills: Find exploitable cryptographic misuse, not theoretical weakness: reused nonces (stream and counter/GCM keystream reuse, ECDSA private-key recovery from a repeated per-signature secret), padding oracles that decrypt ciphertext, hash length-extension on naive MAC constructions, predictable or reused IVs and keys, and a hash chosen for the wrong job. Use when reviewing code that encrypts, signs, authenticates, or hashes, or when a protocol rolls its own crypto. The finding is a concrete recovery or.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add unboundcompute/security-agent-skills/finding-crypto-misuse@git:20260816.e670f56
Exact content
mdr add unboundcompute/security-agent-skills/finding-crypto-misuse@sha256:0d364ff8cf4d7fa0

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_v2rwy7oubtlnr67y.svg)](https://markdownregistry.com/a/art_v2rwy7oubtlnr67y)

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Versions

versioncommittedcommitsizeaudit
git:20260816.e670f56 latest2026-08-16 e670f56 6,452 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (6452 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

unboundcompute/security-agent-skills · 5 stars · license MIT · pushed 2026-09-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_v2rwy7oubtlnr67y
GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/finding-crypto-misuse
GET https://markdownregistry.com/api/v1/blob/0d364ff8cf4d7fa0373c2d785f5838475f36846e548724aa3a65212ab81d05a2

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.