# Phase 7, Milestone 1: Security

> Security audits and hardening for mainnet

**Status**: 🔄 In Progress
**Priority**: Critical (Pre-Mainnet)
**Components**: All crates

---

## Overview

Conduct comprehensive security audits of all cryptographic code, consensus logic, and critical components. Establish bug bounty program and formal verification where applicable.

---

## Tasks

### Task 1.1: Cryptographic Code Audit
- [ ] External audit of synor-crypto
- [ ] Review Ed25519 implementation usage
- [ ] Review Dilithium3 integration
- [ ] Verify hybrid signature scheme
- [ ] Check key derivation functions
- [ ] Audit encryption implementations

**Files to Audit:**
- `crates/synor-crypto/src/ed25519.rs`
- `crates/synor-crypto/src/dilithium.rs`
- `crates/synor-crypto/src/hybrid.rs`
- `crates/synor-crypto/src/encryption.rs`
- `crates/synor-crypto/src/kdf.rs`

**Validation Agents:**
| Agent | Purpose |
|-------|---------|
| `code-reviewer` | Initial code review |
| `silent-failure-hunter` | Check error handling |
| External Auditor | Professional security audit |

**Security Checklist:**
- [ ] No timing side channels
- [ ] Constant-time comparisons
- [ ] Proper RNG seeding
- [ ] Key material zeroing
- [ ] No private key logging

### Task 1.2: Consensus Logic Audit
- [ ] External audit of synor-consensus
- [ ] Review GHOSTDAG implementation
- [ ] Verify UTXO management
- [ ] Check difficulty adjustment
- [ ] Audit block validation
- [ ] Review transaction validation

**Files to Audit:**
- `crates/synor-consensus/src/block_validator.rs`
- `crates/synor-consensus/src/transaction_validator.rs`
- `crates/synor-consensus/src/utxo.rs`
- `crates/synor-consensus/src/difficulty.rs`
- `crates/synor-dag/src/ghostdag.rs`

**Security Checklist:**
- [ ] No double-spend possible
- [ ] Difficulty adjustment secure
- [ ] No block malleability
- [ ] Proper coinbase handling
- [ ] Fork resolution correct

### Task 1.3: Formal Verification
- [ ] Define critical invariants
- [ ] Model key algorithms
- [ ] Verify GHOSTDAG properties
- [ ] Verify consensus rules
- [ ] Document proofs

**Verification Targets:**
| Property | Method | Status |
|----------|--------|--------|
| UTXO conservation | TLA+ | Pending |
| No double-spend | Property testing | ✅ Done |
| Difficulty convergence | Mathematical proof | Pending |
| DAG ordering determinism | Kani | Pending |

### Task 1.4: Bug Bounty Program
- [ ] Define scope and rules
- [ ] Set reward tiers
- [ ] Create submission process
- [ ] Establish response SLA
- [ ] Launch publicly

**Reward Tiers:**
| Severity | Reward |
|----------|--------|
| Critical | $50,000 - $100,000 |
| High | $10,000 - $50,000 |
| Medium | $2,500 - $10,000 |
| Low | $500 - $2,500 |

**Scope:**
- Cryptographic vulnerabilities
- Consensus bugs
- Network attacks
- Smart contract vulnerabilities
- Denial of service

---

## Validation

### Validation Commands

```bash
# Security-focused testing
cargo test --workspace -- --test-threads=1

# Run with address sanitizer
RUSTFLAGS="-Z sanitizer=address" cargo test --workspace

# Run with memory sanitizer
RUSTFLAGS="-Z sanitizer=memory" cargo test --workspace

# Fuzz testing
cargo fuzz run crypto_fuzz
cargo fuzz run consensus_fuzz

# Dependency audit
cargo audit
cargo deny check
```

### Validation Agents

| Agent | Command | Purpose |
|-------|---------|---------|
| `code-reviewer` | Full codebase | Initial security review |
| `silent-failure-hunter` | Error paths | Find hidden failures |
| `pr-test-analyzer` | Test suite | Verify security test coverage |

### Security Test Suite

```bash
# Crypto security tests
cargo test -p synor-crypto security

# Consensus security tests
cargo test -p synor-consensus security

# Network security tests
cargo test -p synor-network security
```

### Penetration Testing

| Test | Target | Method |
|------|--------|--------|
| Eclipse attack | Network layer | Multi-node simulation |
| Sybil attack | Peer management | Fake peer injection |
| Double-spend | Consensus | Race condition testing |
| Time manipulation | Block validation | Clock skew injection |

---

## Deliverables

1. **Audit Report** - External security firm findings
2. **Remediation Plan** - Fixes for identified issues
3. **Security Documentation** - Public security practices
4. **Bug Bounty Portal** - Public submission system
5. **Formal Proofs** - Mathematical verification docs

---

## Timeline

| Task | Duration | Dependencies |
|------|----------|--------------|
| Crypto audit | 4 weeks | None |
| Consensus audit | 6 weeks | None |
| Formal verification | 8 weeks | Audits complete |
| Bug bounty setup | 2 weeks | None |

---

## Acceptance Criteria

1. External audit complete with no critical issues
2. All high-severity issues resolved
3. Formal verification of key properties
4. Bug bounty program live
5. Security documentation published

---

*Started: January 2026*
*Target: Q2 2026*