[SECURITY] Security: Audit and Enforce Storage Key Expiration TTL Bump Policies

[chizzy192]

[SECURITY] Issue

Metadata

Field	Value
Domain	Security
Difficulty	Hard (6 Days)
Effort Estimate	effort: 16h
Priority	P0-Critical
Labels	enhancement
Target Branch	dev
Depends On	None

🎯 Context & Goal

Smart contract security is paramount prior to testnet and mainnet deployment.

This issue audits and hardens security mechanisms in contracts/invoice-escrow/src/storage.rs.

Completing this hardening step mitigates potential attack vectors such as reentrancy, unauthorized access, and storage rent exhaustion.

📂 Target Files

• contracts/invoice-escrow/src/storage.rs → security_audit

📋 Implementation Tasks

• Task 1: Audit security logic in contracts/invoice-escrow/src/storage.rs.
• Task 2: Implement necessary defensive checks and error types.
• Task 3: Add unit tests reproducing edge-case attack vectors.
• Task 4: Verify code passes cargo clippy -- -D warnings cleanly.

🛠️ Technical Guidance

// Security guard pattern
require!(env, condition, ContractError::NotAuthorized);

🔗 References & Related

• Security reference: contracts/invoice-escrow/src/storage.rs

⏳ Delivery Window

This issue should be completed within 6 day(s) of assignment.

Contribution Workflow

1. Branch off dev: git checkout -b feature/issue-implementation dev
2. Implement all tasks in the checklist above.
3. Run all CI checks locally (see DEVELOPMENT.md).
4. Open a Pull Request targeting dev.
5. Link this issue in your PR description.

✅ Acceptance Criteria

• All implementation tasks above are completed cleanly.
• Code compiles without warnings or errors.
• All existing tests continue to pass.
• New unit tests cover all modified code paths.
• PR strictly targets the dev branch.
• Code follows project style guidelines (cargo fmt and cargo clippy).

[amina69]

@amina69 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

hi, let me work on this

ℹ️ Repo Maintainers: To accept this application, review their application or assign @amina69 to this issue.

[drips-wave]

Congratulations, @amina69! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

🧑‍💻 @amina69: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

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