xxf-keychain

Store and retrieve sensitive credentials in iOS Keychain with configurable access policies.

6|1|Updated May 22, 2025
One-click install
npx skills add https://github.com/NBXXF/xxf_ios --skill xxf-keychain
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: xxf-keychain
Source: https://github.com/NBXXF/xxf_ios/tree/main/skills/xxf-keychain
Command: npx skills add https://github.com/NBXXF/xxf_ios --skill xxf-keychain

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Provides a simple, secure mechanism to persist sensitive data on iOS using Keychain, avoiding leaks and manual handling.

Core Features & Use Cases

  • Exposes a simple API with get/set/clear for sensitive data, hiding Keychain complexity.
  • Provides safe defaults and configurable access policies for cross-device sync and security.
  • Encourages best practices like clearing data on logout and avoiding non-sensitive data in Keychain.

Quick Start

Use TokenStore to save a token securely and load it when needed.

Frequently Asked Questions about xxf-keychain

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I securely store tokens and passwords on iOS using Keychain?

To store tokens on iOS, you use a Keychain wrapper that provides safe get, set, and clear operations. This hides Keychain complexity and securely persists sensitive credentials across sessions with configurable access policies.

What is the best way to persist sensitive credentials across sessions in an iOS app?

Persisting sensitive credentials in iOS is best handled by saving them to the Keychain. A wrapper API provides safe defaults for cross-device sync and prevents data leaks by avoiding manual handling of encryption keys and tokens.

Can I configure access policies for Keychain storage to allow cross-device sync?

Yes, you can configure access policies for Keychain storage. The wrapper allows you to set safe defaults for security while enabling cross-device sync for tokens, passwords, and device IDs when needed across iOS sessions.

How do I clear Keychain data when a user logs out of an iOS application?

To clear Keychain data on logout, you call the clear operation provided by the wrapper API. This implements the best practice of removing sensitive tokens and credentials securely when an iOS user session ends.

Do I need testable mocks to test Keychain persistence in my iOS app?

Yes, you need testable mocks to verify Keychain persistence logic without touching the actual iOS secure storage. The wrapper provides these mocks to ensure your credential get, set, and clear operations are production-ready.

Why should I avoid storing non-sensitive data in the iOS Keychain?

You should avoid storing non-sensitive data in the iOS Keychain to prevent unnecessary encryption overhead and access complexity. The wrapper encourages best practices by reserving Keychain storage exclusively for credentials, tokens, and encryption keys.