feat: implement SEP-10 Web Authentication via Stellar Wallets #139#183
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elizabetheonoja-art merged 2 commits intoApr 22, 2026
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…ol#139) - Add /auth/challenge endpoint for SEP-10 challenge generation - Add /auth/verify endpoint for challenge verification and JWT issuance - Implement unified authentication middleware supporting both Stellar and Ethereum - Update all protected routes to use unified authentication - Add comprehensive test suite for SEP-10 compliance and integration - Create complete implementation documentation - Ensure full SEP-10 specification compliance - Maintain backward compatibility with existing Ethereum authentication Resolves SubStream-Protocol#139
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Overview
This PR introduces decentralized authentication to the SubStream Protocol. We've moved from a stateless backend to a secure, JWT-based system using the Stellar Ecosystem Proposal 10 (SEP-10).
Changes
Challenge Endpoint: /auth/challenge generates cryptographically secure XDR transactions for wallet signing.
Verification Engine: /auth/verify validates signatures against the network and server secrets.
JWT Integration: Implemented short-lived tokens to protect merchant and subscriber dashboards.
Security Middleware: Added a global JwtAuthGuard to prevent unauthorized access to payment histories.
Testing: Included E2E tests simulating a full login cycle using Stellar-SDK keypair mocks.
Acceptance Criteria
[x] Passwordless authentication is fully functional.
[x] SEP-10 standard compliance verified.
[x] Private routes correctly reject invalid or expired tokens.
Fixes #139