jordancoin/ios-skills-collection · skills/ivan-magda--swift-security-expert/SKILL.md

swift-security-expert skillF

swift-security-expert is agent-read markdown (skill) from jordancoin/ios-skills-collection: Use when working with iOS/macOS Keychain Services (SecItem queries, kSecClass, OSStatus errors), biometric authentication (LAContext, Face ID, Touch ID), CryptoKit (AES-GCM, ChaChaPoly, ECDSA, ECDH, HPKE, ML-KEM), Secure Enclave, secure credential storage (OAuth tokens, API keys), certificate pinning (SecTrust, SPKI), keychain sharing across apps/extensions, migrating secrets from UserDefaults or plists, or OWASP MASVS/MASTG mobile compliance on Apple platforms..

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 jordancoin/ios-skills-collection/swift-security-expert@git:20260330.1853d9e
Exact content
mdr add jordancoin/ios-skills-collection/swift-security-expert@sha256:a915770a1a864c1c

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_apqz3ecivzis4dkx.svg)](https://markdownregistry.com/a/art_apqz3ecivzis4dkx)

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Versions

versioncommittedcommitsizeaudit
git:20260330.1853d9e latest2026-03-30 1853d9e 48,408 BF view

Audit of the latest version

F  15 of 17 checks passed. Deterministic, no model, same answer every run.
  • FAIL, critical: No instruction to send local credentials anywhere (matched: KeychainAccess and Valet reduce boilerplate at the cost of coupling to a third)
  • fail: No instruction to read or print local credentials (matched: read isolation, the data protection keychain)
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (48408 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 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 base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

jordancoin/ios-skills-collection · 5 stars · license NOASSERTION · pushed 2026-09-10 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_apqz3ecivzis4dkx
GET https://markdownregistry.com/api/v1/resolve?ref=jordancoin/ios-skills-collection/swift-security-expert
GET https://markdownregistry.com/api/v1/blob/a915770a1a864c1cfb94987334df63dc7d6904ffba14223a51d78ff3d6037e37

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