This directory contains comprehensive security testing tools for the ReversoVault smart contract.

security/
├── README.md                    # This file
├── slither/
│   ├── full-report.txt         # Complete Slither static analysis
│   └── README.md               # Slither usage guide
├── foundry-fuzz/
│   ├── foundry.toml            # Foundry configuration
│   ├── fuzz-report.md          # Fuzz testing results
│   └── test/
│       └── ReversoVault.fuzz.t.sol  # Fuzz test suite
└── gas-benchmarks/
    └── gas-report.md           # Detailed gas cost analysis

• Purpose: Find vulnerabilities, bad practices, code quality issues
• Findings: 4 HIGH, 9 MEDIUM, 30 LOW, 110 INFO
• Note: Many HIGH/MEDIUM are false positives (reentrancy with ReentrancyGuard)

# Run Slither
cd REVERSO
slither . --exclude-dependencies

• Purpose: Property-based testing with random inputs
• Tests: 13 fuzz tests × 1000 runs = 13,000+ test cases
• Status: ✅ ALL PASSED

# Run fuzz tests
cd security/foundry-fuzz
forge test --match-contract ReversoVaultFuzzTest -vv

• Purpose: Measure actual gas costs for budgeting/optimization
• Coverage: All main operations with real-world costs

# Run gas benchmarks
cd REVERSO
npx hardhat test test/GasBenchmarks.test.ts

Through fuzz testing, the following invariants are proven:

1. Fee Calculation

   • Never overflows for any amount
   • Always within 0.3%-0.7% range
   • Correct tier selection at thresholds

2. Transfer Logic

   • Amount stored = msg.value - fee (always)
   • TVL = sum of all pending amounts
   • Transfer IDs increment monotonically

3. Access Control

   • Only sender can cancel
   • Only recipient can claim (after unlock)
   • Batch size limits enforced (MAX_BATCH_SIZE = 50)

4. Time Constraints

   • Delay: 1 hour to 30 days (enforced)
   • Expiry: minimum 7 days (enforced)
   • Claims blocked before unlock time

# Full security scan (from REVERSO root)
slither . --exclude-dependencies 2>&1 | tee security/slither/full-report.txt

# Run all fuzz tests
cd security/foundry-fuzz && forge test -vv

# Run gas benchmarks
npx hardhat test test/GasBenchmarks.test.ts

# Run all Hardhat tests
npx hardhat test

• Static analysis (Slither) complete
• Fuzz testing (Foundry) complete
• Gas benchmarks complete
• Unit tests (109/109 passing)
• Reentrancy protection verified
• Batch DoS protection (MAX_BATCH_SIZE)
• Circuit breaker implemented
• Emergency pause functionality
• External audit (planned Q3 2026 — mainnet already live on 7 chains)

1. Next Steps:

   • Professional external audit (Q3 2026)
   • Run Slither with --triage-mode to classify findings
   • Increase fuzz runs to 100,000+ for deeper coverage

2. Continuous Integration:

   • Add Slither to CI pipeline
   • Run fuzz tests on PRs
   • Monitor gas costs for regressions

Security Suite for ReversoVault v1.0