aegis-crypto SKILL.md skillA
aegis-crypto from as-foss/aegis-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add as-foss/aegis-skills/aegis-crypto@git:20260826.9702747Pins git:20260826.9702747 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- as-foss/aegis-skills
- Path
skills/code/crypto/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260826.9702747, committed Aug 26, 2026
- First version recorded
- Aug 25, 2026
- Size
- 51,338 bytes
- Repository stars
- 16
- License
- Apache-2.0
Detects cryptographic failures including weak/legacy algorithms, cipher-mode and nonce misuse, broken key management, weak password hashing, insecure randomness, disabled TLS verification, JWT crypto misconfiguration, encoding masquerading as encryption, and missing webhook signature verification.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
## Scope & Objectives Scan application source, configuration, and dependency manifests for cryptographic design and implementation flaws. Confirm or refute each candidate finding by tracing how key material, plaintexts, nonces, and verification results actually flow. - In scope: weak/legacy primitives; ECB/CBC/CTR/GCM misuse; IV/nonce generation; key derivation and cross-purpose reuse; hardcoded keys and peppers at usage sites; password hashing parameters and comparisons; PRNG choice; hash-based MAC/signature constructions and domain separation; TLS client verification; JWT/JWE crypto parameters; base64/XOR/ROT13 pseudo-encryption; webhook signature validation and replay windows. - Out of scope (cross-reference): credential/key storage sprawl and committed `.env` files (SECRETS); auth-flow logic and the JWT HS/RS confusion walkthrough (AUTHN); server TLS termination, HSTS, and header hardening (CONFIG); network-level infra scanning. ## Prerequisites & Vocabulary Zero-background primer: the terms this module uses, one line each. Deeper plain-language explanations for every class live in the repository GUIDE.md glossary. …
Read the whole file at its exact version.
How to install
mdr add as-foss/aegis-skills/aegis-crypto@sha256:caee69882034da80The line at the top of this page pins the label git:20260826.9702747, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_y4h3qz45sxmztcb7)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Aug 25, 2026 and Aug 26, 2026, more than one a day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260826.9702747 latest | 2026-08-26 | 9702747 | 51,338 B | A | view · diff |
| git:20260825.85624bc | 2026-08-25 | 85624bc | 51,339 B | A | view · diff |
| git:20260825.244c198 | 2026-08-25 | 244c198 | 50,331 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (51338 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
as-foss/aegis-skills · 16 stars · license Apache-2.0 · pushed 2026-08-26 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_y4h3qz45sxmztcb7 GET https://markdownregistry.com/api/v1/resolve?ref=as-foss/aegis-skills/aegis-crypto GET https://markdownregistry.com/api/v1/blob/caee69882034da80f5954b232dcc077b272de93cbd4d0d019231d0f0859ea4fb
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.