Server-side Wallet Signature Verification

[SudiptaPaul-31]

🔐 Feature: Server-side Wallet Signature Verification

📖 Description

Strengthen authentication by verifying wallet signatures cryptographically on the server before issuing JWTs or sessions. This ensures that only valid, signed requests can establish authenticated sessions.

Expected Behavior

• Cryptographic verification: Server validates the wallet signature using the appropriate algorithm (e.g., ECDSA/secp256k1).
• JWT/session issuance: Only proceed if the signature is valid.
• Error handling: Invalid or missing signatures should return a clear error response (e.g., 401 Unauthorized).
• Security compliance: Prevent replay attacks and ensure nonce usage for signature requests.

🛠 Technical Notes

• Integrate signature verification into the authentication middleware.
• Use existing wallet SDK methods for signature validation.
• Ensure nonce generation and expiration are enforced.
• Maintain compatibility with current client-side wallet flows.
• Follow best practices for secure JWT issuance (short expiry, refresh tokens if needed).

✅ Verification

• Valid signatures result in successful JWT/session creation.
• Invalid signatures are rejected with proper error codes.
• Replay attempts are blocked via nonce checks.
• npm run lint and npm run build succeed.
• No regression in wallet connection, message rendering, or navigation features.

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[Anuoluwapo25]

@Anuoluwapo25 has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hi maintainer, I'd like to take on this issue as i'll fully implement what is requested as i'm a fullstack web3 developer with experiences.

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[mikevill20]

@mikevill20 has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hello maintainer, please can i take on this issue?

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[Olowodarey]

@Olowodarey has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hello, I’m Darey Olowo, a frontend and smart contract developer with experience building and shipping reliable features. I’d like to take on this issue and deliver a solid solution within 24 hours.

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[Mmesolove]

@Mmesolove has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hi maintain I have read through the description and I can solve it, please assign to me

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Congratulations, @Mmesolove! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on February 26, 2026.

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