Feature/smart contract security improvements - #540
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Nanafancy merged 5 commits intoAug 26, 2026
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Add proptest-based property tests to verify contract invariants: - Authorization/revoke cycles always leave users unauthorized - Users without KYC can never be authorized - KYC revocation doesn't auto-revoke existing authorizations - Revoking non-authorized users is a safe no-op - Multiple users don't interfere with each other's state - Rate limit resets correctly per ledger 🤖 Generated with Codebuff Co-Authored-By: Codebuff <noreply@codebuff.com>
Create comprehensive security documentation for third-party audit: - Threat model with attack surface, threat actors, and mitigations - Formal security specification with access control matrix - Security invariants and audit readiness checklist - Known risks and deployment checklist Addresses: TH-01 through TH-08 identified threats 🤖 Generated with Codebuff Co-Authored-By: Codebuff <noreply@codebuff.com>
Implement Soroban upgradeable contract pattern: - Add version tracking in contract storage - Implement upgrade() and apply_upgrade() methods with event emission - Add admin transfer capability for key recovery - Guard initialize() against re-initialization (fixes TH-01) - Add tests for version, admin transfer, and upgrade pending state 🤖 Generated with Codebuff Co-Authored-By: Codebuff <noreply@codebuff.com>
Add CI/CD pipeline for reproducible WASM builds: - GitHub Actions workflow for contract testing, building, and verification - WASM artifact upload with SHA-256 hash calculation - Automated hash verification step - Fuzz test integration in CI - Local verification script (scripts/verify-contract.sh) - PR comments with WASM hash for audit trail 🤖 Generated with Codebuff Co-Authored-By: Codebuff <noreply@codebuff.com>
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Closes #519
Closes #520
Closes #521
Closes #522