Build a secure encrypted storage layer for sensitive mobile data

[Lakes41]

Difficulty: Expert
Type: Security / Architecture

Background

GuildPass Mobile stores authentication state, cached credentials, user preferences, and other locally persisted information. As the application continues to evolve, sensitive data should be consistently protected using platform-native secure storage mechanisms.

A centralized encrypted storage layer simplifies future development while reducing the risk of accidental exposure of sensitive information.

Problem

Sensitive application data may be persisted using multiple storage mechanisms with varying security guarantees, increasing maintenance complexity and the likelihood of improper storage practices.

Expected outcome

Create a unified encrypted storage abstraction that transparently protects sensitive application data while exposing a simple API for feature modules.

Suggested implementation

1. Audit all local persistence mechanisms currently used throughout the application.
2. Classify stored data according to sensitivity.
3. Migrate sensitive values to encrypted platform storage.
4. Create a centralized storage abstraction with consistent serialization and error handling.
5. Support secure migration from existing storage formats.
6. Document storage guidelines for future contributors.

Acceptance criteria

• Sensitive application data is encrypted at rest.
• Existing user sessions migrate safely.
• Feature modules consume the centralized storage abstraction.
• Documentation defines approved storage practices.
• Automated tests verify migration and encryption behavior.

Likely affected files/directories

src/storage/, src/providers/, src/features/auth/, src/utils/, src/hooks/

[official-mary]

Hi maintainer I'd like to work on this issue. I'll create a centralized encrypted storage abstraction, migrate sensitive data to secure platform storage with safe migration from existing formats, provide a consistent API for feature modules, document storage guidelines, and add tests covering encryption and migration behavior. I'll wait for assignment before starting. Thank you.

[grantfox-oss]

🦊 GrantFox — @official-mary has been assigned to this issue as part of the Official Campaign | FWC26 campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #223)
2. Your PR will be reviewed by the Adamantine-guild maintainers

Good luck! Track your progress on GrantFox.