[BE-W3A-108] Web3 Signature Security and Auditing - Step 108

[soomtochukwu]

Implement Secure Admin Signature Overrides for Platform Disputes

• Category: Backend: Web3 Auth & Stellar Signatures
• Task ID: BE-W3A-108

Description

This issue is dedicated to the technical design, implementation, and rigorous auditing of 'Implement Secure Admin Signature Overrides for Platform Disputes' inside the Lance marketplace ecosystem, specifically focusing on the Backend: Web3 Auth & Stellar Signatures component. Working within the Axum rust backend framework, you must implement efficient routing middleware, handle asynchronous task execution with robust safety bounds, and ensure proper tracing instrumentations are configured for full production observability. Ensure that your implementation strictly adheres to the project's architectural guidelines, features self-documenting code with comprehensive inline annotations, and provides solid verification proofs. Any modifications to state variables must undergo strict validation before commits.

Requirements

• Implement signature validation and session routing inside backend/src/routes/auth.rs for Implement Secure Admin Signature Overrides for Platform Disputes.
• Decode and validate Stellar public addresses securely, checking checksum bytes using dynamic decoders.
• Integrate Redis client helpers or secure cookies parameters inside the Axum route state.
• Write comprehensive test mockups to verify signature validations and challenge timelines.

Acceptance Criteria

• Login succeeds with Freighter wallet signatures that conform to SEP-53 standard.
• Incorrect signatures or expired challenges are rejected with a strict 401 Unauthorized status.
• Redis blacklist lookups execute within 1ms and effectively block revoked sessions.

[codefather2026]

@codefather2026 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hi maintainer, i will like to solve this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @codefather2026 to this issue.

[somotochukwu-dev]

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

Good day maintainer,
Please assign this issue to me
Thanks

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

[michaelvic123]

@michaelvic123 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

please assign this issue to me

ℹ️ Repo Maintainers: To accept this application, review their application or assign @michaelvic123 to this issue.

[drips-wave]

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

🧑‍💻 @somotochukwu-dev: 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.

🌊 Happy Wave 🌊