[SC-SEC-061] Implement ReentrancyGuard for Token Transfers

[soomtochukwu]

Implement ReentrancyGuard for Token Transfers

• Category: Smart Contract: Security & Gas Optimization
• Task ID: SC-SEC-061

Description

This issue focuses on the security auditing, gas profiling, and compiler optimization of the smart contract bundle for 'Implement ReentrancyGuard for Token Transfers'. Executing external token transfers introduces potential re-entrancy vectors if the target contract attempts recursive callbacks before our internal state is updated. We need to implement a robust, gas-efficient reentrancy guard similar to OpenZeppelin's mutex lock. The guard must set a transient lock state variable upon function entry, check that the lock is not already active, and release it upon safe exit. Contributor must apply this to all release and refund paths.

Requirements

• Analyze compiler options, gas boundaries, and security layouts for Implement ReentrancyGuard for Token Transfers.
• Implement reentrancy locks, transient variables, or compiler flag profiles appropriately.
• Compress state representation using packed structs to reduce persistent ledger bytes.
• Exhaustively verify gas consumption of core actions via automated benchmark tests.

Acceptance Criteria

• WASM contract sizes are verified to be under 40KB.
• Execution costs for releases and refunds drop by at least 15% in gas benchmarks.
• Strict re-entrancy unit tests correctly trigger panic aborts on simulated re-entrant calls.

[Opeyemi01-del]

@Opeyemi01-del has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

I would love to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Opeyemi01-del to this issue.

[drips-wave]

Congratulations, @Opeyemi01-del! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

🧑‍💻 @Opeyemi01-del: 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.

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