🛡️ Crypto-Isolation | Context-Managed Secure Overwrites for Active Private Signing Keys

[Sadeequ]

Description

Allowing active transaction private keys to remain lingering in process memory lines after a transaction is signed leaves the engine vulnerable to memory-dump extraction attacks.

Technical Requirements

• Enforce strict context managers (with block structures) around key handles inside src/crypto/signer.py.

• Implement an explicit byte-clearing overwrite sweep over underlying data memory segments the instant the signing routine scope closes.

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[Devadakene]

@Devadakene has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

I am confident that I can implement this having worked on similar issues in the past

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

[drips-wave]

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

🧑‍💻 @Devadakene: 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 🌊

[drips-wave]

This issue has been removed from the Stellar Wave Program by the repository maintainers.

@Devadakene, you have been unassigned from this issue. If you have any questions, please reach out to the repo maintainers.