secure-auth-patterns SKILL.md skillA
secure-auth-patterns from hermeticormus/libresecops-claude-code is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hermeticormus/libresecops-claude-code/secure-auth-patterns@git:20260930.71a2663Pins git:20260930.71a2663 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hermeticormus/libresecops-claude-code
- Path
plugins/secure-coding-practices/skills/secure-auth-patterns/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260930.71a2663, committed Sep 30, 2026
- First version recorded
- Feb 25, 2026
- Size
- 10,696 bytes
- Repository stars
- 4
- License
- MIT
Authentication and session implementation patterns: password hashing, session cookie settings, JWT validation and its pitfalls, and access control checks, with language-specific examples. Use when building or reviewing login, sessions, tokens, or authorization code.
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
# Secure Auth Patterns
> Authentication, session management, and access control implementation patterns with language-specific secure code examples.
## Knowledge Base
### Password Storage
Never store passwords in plaintext, encrypted form, or with weak hashes (MD5, SHA-1, unsalted SHA-256). Use adaptive hashing algorithms designed for password storage.
**Algorithm selection** (OWASP 2023 recommendations):
| Algorithm | Recommended Parameters | Notes |
|-----------|----------------------|-------|
| Argon2id | Memory: 19456 KB, Iterations: 2, Parallelism: 1 | Preferred. Memory-hard, GPU-resistant |
| bcrypt | Cost factor: 12+ | Widely supported, 72-byte input limit |
| scrypt | N: 2^17, r: 8, p: 1 | Memory-hard, less common than Argon2 |
| PBKDF2-SHA256 | 600,000 iterations | Only if above are unavailable (FIPS) |
**Implementation examples**:
```python
# Python - Argon2 (preferred)
from argon2 import PasswordHasher
ph = PasswordHasher(time_cost=2, memory_cost=19456, parallelism=1)
hash = ph.hash(password)
# Verify
try:
ph.verify(hash, password)
if ph.check_needs_rehash(hash): # Upgrade params over time
new_hash = ph.hash(password)
except VerifyMismatchError:
…Read the whole file at its exact version.
How to install
mdr add hermeticormus/libresecops-claude-code/secure-auth-patterns@sha256:eecfff38928ba571The line at the top of this page pins the label git:20260930.71a2663, 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_r63yurlxaooap3hu)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Feb 25, 2026 and Sep 30, 2026, about one every 218 days. Its first recorded version is graded C and its latest A.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260930.71a2663 latest | 2026-09-30 | 71a2663 | 10,696 B | A | view · diff |
| git:20260225.4a0a620 | 2026-02-25 | 4a0a620 | 10,376 B | C | 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 (10696 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
hermeticormus/libresecops-claude-code · 4 stars · license MIT · pushed 2026-10-04 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_r63yurlxaooap3hu GET https://markdownregistry.com/api/v1/resolve?ref=hermeticormus/libresecops-claude-code/secure-auth-patterns GET https://markdownregistry.com/api/v1/blob/eecfff38928ba571a95fc5a5dca20c823d7d3f7612a1d3673d4b0e8d993e3e1c
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.