SOVEREIGN-NET
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+# Security Fixes Implementation Plan
+
+## Status: IN PROGRESS
+
+This document tracks the implementation of all security fixes from the security assessment.
+
+## Completed ✅
+
+1. **P0-1: Error Sanitization** - ✅ DONE
+   - Created `src/core/security-utils.ts` with sanitizeError() function
+   - Updated `zhtp-api-core.ts` to sanitize errors before logging
+   - Prevents credential leakage in debug logs
+
+2. **P2-2: Configurable Timeouts** - ✅ DONE
+   - Added optional `timeoutMs` parameter to request() method
+   - Allows per-operation timeout configuration
+
+3. **P2-4: Content-Type Validation** - ✅ DONE
+   - Added Content-Type header validation in request() method
+   - Rejects non-JSON responses before parsing
+
+4. **Security Utils Created** - ✅ DONE
+   - Input validation functions (DID, identity ID, contract ID, etc.)
+   - Passphrase strength validation (16+ chars, 60+ bits entropy, complexity)
+   - Rate limiting helpers
+   - URL construction helpers
+
+## In Progress 🔄
+
+5. **P0-2: Input Validation** - 🔄 NEXT
+   - Need to apply validation to all API methods in zhtp-api-methods.ts
+   - Files to update:
+     - `src/core/zhtp-api-methods.ts` (all methods with ID parameters)
+
+## Pending 📋
+
+### Critical (P0/P1)
+
+6. **Default ZHTP Configuration**
+   - Update default URLs in all config providers
+   - Change from `http://localhost:8000` to proper QUIC config
+   - Files: `vanilla-js/config-provider.ts`, `react-native/config-provider.ts`, `electron/config-provider.ts`
+
+7. **P1-2: Passphrase Requirements**
+   - Apply validatePassphraseStrength() to exportBackup() and importBackup()
+   - File: `src/core/zhtp-api-methods.ts`
+
+8. **P1-3: Seed Phrase Security**
+   - Remove seedPhrases from Identity type (make separate secure retrieval)
+   - Update mapSignupResponseToIdentity() to not include seeds by default
+   - Add explicit retrieveSeedPhrases() method with warnings
+   - Files: `src/core/types.ts`, `src/core/zhtp-api-methods.ts`
+
+9. **P1-4: CSRF Protection**
+   - Add CSRF token generation/validation helpers
+   - Include CSRF tokens in state-changing operations
+   - File: `src/core/security-utils.ts`, update all POST/DELETE/PUT methods
+
+### Medium (P2)
+
+10. **P2-1: Client-Side Rate Limiting**
+    - Apply isRateLimited() to login, signup, backup import
+    - Files: `src/core/zhtp-api-methods.ts`
+
+11. **P2-5: URL Construction**
+    - Replace manual query string construction with constructUrl()
+    - Files: `src/core/zhtp-api-methods.ts` (multiple methods)
+
+12. **P2-6: Electron Config Validation**
+    - Add schema validation for IPC config responses
+    - File: `src/electron/config-provider.ts`
+
+13. **P2-7: Initialization Guards**
+    - Add ensureInitialized() checks to all public methods
+    - File: `src/core/zhtp-api.ts`
+
+14. **P2-8: Dependency Updates**
+    - Run `npm audit fix`
+    - Update vulnerable dependencies
+    - File: `package.json`
+
+### Documentation & Testing
+
+15. **SECURITY.md**
+    - Create comprehensive security documentation
+    - Include best practices, known limitations, reporting procedures
+
+16. **Security Tests**
+    - Create `src/core/security-utils.test.ts`
+    - Add tests for all validation functions
+    - Add integration tests for security features
+
+17. **Final Validation**
+    - Run `npm run type-check`
+    - Run `npm run build`
+    - Run `npm test`
+    - Verify all tests pass
+
+## Implementation Strategy
+
+### Phase 1: Core Security (Items 5-9) - HIGHEST PRIORITY
+These are blocking issues that prevent secure production use.
+
+### Phase 2: Additional Protections (Items 10-14) - HIGH PRIORITY
+These improve defense-in-depth.
+
+### Phase 3: Documentation & Testing (Items 15-17) - REQUIRED FOR RELEASE
+These ensure maintainability and proper usage.
+
+## Estimated Timeline
+
+- **Phase 1**: 2-3 hours (critical fixes)
+- **Phase 2**: 1-2 hours (additional protections)
+- **Phase 3**: 1-2 hours (documentation & testing)
+- **Total**: 4-7 hours for complete implementation
+
+## Files Modified So Far
+
+1. ✅ `src/core/security-utils.ts` (created)
+2. ✅ `src/core/zhtp-api-core.ts` (updated)
+
+## Files Remaining
+
+3. 📋 `src/core/zhtp-api-methods.ts` (major updates needed)
+4. 📋 `src/core/types.ts` (seed phrase security)
+5. 📋 `src/core/zhtp-api.ts` (initialization guards)
+6. 📋 `src/vanilla-js/config-provider.ts` (default URL)
+7. 📋 `src/react-native/config-provider.ts` (default URL)
+8. 📋 `src/electron/config-provider.ts` (config validation)
+9. 📋 `package.json` (dependency updates)
+10. 📋 `SECURITY.md` (create)
+11. 📋 `src/core/security-utils.test.ts` (create)
+
+## Next Steps
+
+1. Update zhtp-api-methods.ts with input validation
+2. Apply passphrase strength validation
+3. Secure seed phrase handling
+4. Add rate limiting to sensitive operations
+5. Fix URL construction
+6. Update config providers
+7. Add initialization guards
+8. Update dependencies
+9. Create documentation
+10. Write tests
+11. Final validation
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+# API Path Update Summary - Issue #18
+
+## Overview
+Updated all API methods in `src/core/zhtp-api-methods.ts` to use the standardized `/api/v1` path prefix, ensuring compatibility with the ZHTP node's current API structure.
+
+## Changes Made
+
+### Wallet Operations
+All wallet methods now use `/api/v1/wallet` prefix:
+
+1. **getWallets()** (line 381)
+   - ❌ Old: `/wallet/balance?address=...`
+   - ✅ New: `/api/v1/wallet/balance?address=...`
+
+2. **getTransactionHistory()** (line 395)
+   - ❌ Old: `/wallet/transactions?address=...`
+   - ✅ New: `/api/v1/wallet/transactions?address=...`
+
+3. **getAssets()** (line 403)
+   - ❌ Old: `/wallet/assets?address=...`
+   - ✅ New: `/api/v1/wallet/assets?address=...`
+
+### DAO Operations
+All DAO methods now use `/api/v1/dao` prefix:
+
+4. **getProposalDetails()** (line 475)
+   - ❌ Old: `/dao/proposals/${proposalId}`
+   - ✅ New: `/api/v1/dao/proposals/${proposalId}`
+
+5. **getDelegateProfile()** (line 487)
+   - ❌ Old: `/dao/delegates/${delegateId}`
+   - ✅ New: `/api/v1/dao/delegates/${delegateId}`
+
+6. **getVotingPower()** (line 521)
+   - ❌ Old: `/dao/voting-power/${userDid}`
+   - ✅ New: `/api/v1/dao/voting-power/${userDid}`
+
+7. **getUserVotes()** (line 532)
+   - ❌ Old: `/dao/user-votes/${userDid}`
+   - ✅ New: `/api/v1/dao/user-votes/${userDid}`
+
+## Already Correct Paths
+
+The following sections were already using `/api/v1` paths correctly:
+
+✅ **Identity Operations** (lines 44-370)
+- All `/api/v1/identity/*` endpoints
+
+✅ **Backup Operations** (lines 198-219)
+- All `/api/v1/identity/backup/*` endpoints
+
+✅ **Guardian Management** (lines 238-305)
+- All `/api/v1/guardian/*` and `/api/v1/identity/guardians/*` endpoints
+
+✅ **Network Operations** (lines 375, 607)
+- `/api/v1/blockchain/network/peers`
+
+✅ **Blockchain Operations** (lines 595-642)
+- All `/api/v1/blockchain/*` endpoints
+
+✅ **Smart Contract Operations** (lines 641-684)
+- All `/api/v1/blockchain/contracts/*` endpoints
+- All `/api/v1/contract/*` endpoints
+
+✅ **Zero-Knowledge Proof Operations** (lines 689-708)
+- `/api/v1/zkp/generate`
+- `/api/v1/zkp/verify`
+
+✅ **Protocol Operations** (lines 599, 603, 726)
+- `/api/v1/protocol/info`
+- `/api/v1/network/gas`
+
+✅ **Web4/DHT Operations** (lines 539-590)
+- All `/api/v1/dht/*` and `/api/v1/web4/*` endpoints
+
+## Backward Compatibility
+
+The ZHTP node supports backward compatibility through path aliases (see `zhtp/src/server/http/router.rs:187-256`):
+
+### Legacy Path Mappings:
+- `/wallet/*` → `/api/v1/wallet/*` ✅
+- `/dao/*` → `/api/v1/dao/*` ✅
+- `/mesh/peers` → `/api/v1/blockchain/network/peers` ✅
+- `/node/status` → `/api/v1/protocol/info` ✅
+- `/blockchain/info` → `/api/v1/blockchain/status` ✅
+- `/contract/*` → `/api/v1/blockchain/contracts/*` ✅
+
+**Result:** Even though we updated the client to use `/api/v1` paths, the old paths would have still worked due to node-side aliasing. However, using the standard paths directly is cleaner and more future-proof.
+
+## Verification
+
+Total API methods checked: **70+ methods**
+
+**Path Distribution:**
+- Methods using `/api/v1`: **70 methods** ✅
+- Methods using `/health`: **1 method** ✅ (health check endpoint)
+- Methods using legacy paths: **0 methods** ✅
+
+All paths now conform to the `/api/v1` standard!
+
+## Testing Recommendations
+
+1. **Wallet Methods Test:**
+   ```typescript
+   await client.getWallets(testDid);
+   await client.getTransactionHistory(testAddress);
+   await client.getAssets(testAddress);
+   ```
+
+2. **DAO Methods Test:**
+   ```typescript
+   await client.getProposalDetails(testProposalId);
+   await client.getDelegateProfile(testDelegateId);
+   await client.getVotingPower(testDid);
+   await client.getUserVotes(testDid);
+   ```
+
+3. **End-to-End Test:**
+   - Run full API client test suite against ZHTP node
+   - Verify all methods return expected responses
+   - Check error handling for invalid paths
+
+## Impact Assessment
+
+**Breaking Changes:** ❌ None
+- All changes are path updates only
+- No method signatures changed
+- No request/response formats changed
+- Backward compatible with existing code
+
+**Benefits:**
+- ✅ Consistent API path structure
+- ✅ Future-proof against potential removal of legacy aliases
+- ✅ Clearer API documentation
+- ✅ Easier to maintain and understand
+
+## Files Modified
+
+1. `src/core/zhtp-api-methods.ts` - 7 path updates
+
+## Related Issues
+
+- Issue #18: [P1] Verify and update API paths to /api/v1 standard
+- Parent Issue #17: Implementation Guide - Complete ZHTP Node API Endpoint Reference
+- Node Issue SOVEREIGN-NET/The-Sovereign-Network#112 (closed - all endpoints implemented)
+
+## Next Steps
+
+1. Run TypeScript compilation check
+2. Run test suite
+3. Update issue #18 with completion status
+4. Move to Priority 2: Backup & Recovery methods (Issue #19)