From 34582704775f43879bd3007ec3a4ec5fe3295e7d Mon Sep 17 00:00:00 2001 From: lockbitchat Date: Mon, 8 Sep 2025 11:45:32 -0400 Subject: [PATCH] deleting unnecessary comments --- src/network/EnhancedSecureWebRTCManager.js | 1159 ++++++++------------ 1 file changed, 477 insertions(+), 682 deletions(-) diff --git a/src/network/EnhancedSecureWebRTCManager.js b/src/network/EnhancedSecureWebRTCManager.js index 5e05978..5c9f746 100644 --- a/src/network/EnhancedSecureWebRTCManager.js +++ b/src/network/EnhancedSecureWebRTCManager.js @@ -1,21 +1,6 @@ // Import EnhancedSecureFileTransfer import { EnhancedSecureFileTransfer } from '../transfer/EnhancedSecureFileTransfer.js'; -// ============================================ -// CRITICAL SECURITY WARNING -// ============================================ -// -// MITM PROTECTION: Self-signed ECDSA keys DO NOT provide authentication! -// - MITM can substitute both keys and "self-sign" them -// - ECDSA signatures only prove packet integrity, not identity -// - SAS (Short Authentication String) verification is the ONLY protection -// -// REQUIREMENT: Both parties MUST verify the same code out-of-band: -// - Voice call, video call, or in-person verification -// - Compare verification codes before allowing traffic -// - No traffic should be allowed before SAS verification -// -// ============================================ // MUTEX SYSTEM FIXES - RESOLVING MESSAGE DELIVERY ISSUES // ============================================ // Issue: After introducing the Mutex system, messages stopped being delivered between users @@ -115,37 +100,17 @@ class EnhancedSecureWebRTCManager { SYSTEM_MESSAGE: 'SYSTEM_MESSAGE_FILTERED' }; - // SECURE: Static debug flag instead of this._debugMode + // Static debug flag instead of this._debugMode static DEBUG_MODE = false; // Set to true during development, false in production - // ============================================ - // SECURITY WARNING: DTLS PROTECTION REMOVED - // ============================================ - // - // REMOVED: Fake DTLS ClientHello validation (security theater) - // REASON: Browser WebRTC doesn't provide access to DTLS layer in JavaScript - // - // REAL SECURITY: Use these mechanisms instead: - // 1. Out-of-band key fingerprint verification (SAS/QR codes) - // 2. SDP fingerprint validation (not "client hello" data) - // 3. Public key pinning if known in advance - // 4. Certificate transparency validation - // - // static DTLS_PROTECTION = { - // SUPPORTED_CIPHERS: [...], // REMOVED: Fake cipher validation - // MIN_TLS_VERSION: '1.2', // REMOVED: Fake TLS version check - // MAX_TLS_VERSION: '1.3', // REMOVED: Fake TLS version check - // CLIENTHELLO_TIMEOUT: 5000, // REMOVED: Fake timeout - // ICE_VERIFICATION_TIMEOUT: 3000 // REMOVED: Fake timeout - // }; constructor(onMessage, onStatusChange, onKeyExchange, onVerificationRequired, onAnswerError = null, onVerificationStateChange = null, config = {}) { // Determine runtime mode this._isProductionMode = this._detectProductionMode(); - // SECURE: Use static flag instead of this._debugMode + // Use static flag instead of this._debugMode this._debugMode = !this._isProductionMode && EnhancedSecureWebRTCManager.DEBUG_MODE; - // SECURE: Configuration from constructor parameters instead of global flags + // Configuration from constructor parameters instead of global flags this._config = { fakeTraffic: { enabled: config.fakeTraffic?.enabled ?? true, @@ -179,15 +144,15 @@ class EnhancedSecureWebRTCManager { } }; - // SECURE: Initialize own logging system + // Initialize own logging system this._initializeSecureLogging(); this._setupOwnLogger(); this._setupProductionLogging(); - // SECURE: Store important methods first + // Store important methods first this._storeImportantMethods(); - // SECURE: Setup global API after storing methods + // Setup global API after storing methods this._setupSecureGlobalAPI(); if (!window.EnhancedSecureCryptoUtils) { throw new Error('EnhancedSecureCryptoUtils is not loaded. Please ensure the module is loaded first.'); @@ -213,11 +178,7 @@ class EnhancedSecureWebRTCManager { this.onStatusChange = onStatusChange; this.onKeyExchange = onKeyExchange; this.onVerificationStateChange = onVerificationStateChange; - // CRITICAL: SAS verification callback - this is the ONLY MITM protection - // - Self-signed ECDSA keys don't provide authentication - // - MITM can substitute both keys and "self-sign" them - // - SAS must be compared out-of-band (voice, video, in-person) - // - Both parties must verify the same code before allowing traffic + this.onVerificationRequired = onVerificationRequired; this.onAnswerError = onAnswerError; // Callback for response processing errors this.isInitiator = false; @@ -261,11 +222,11 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida this.remoteVerificationConfirmed = false; this.bothVerificationsConfirmed = false; - // CRITICAL SECURITY: Store expected DTLS fingerprint for validation + // Store expected DTLS fingerprint for validation this.expectedDTLSFingerprint = null; this.strictDTLSValidation = true; // Can be disabled for debugging - // CRITICAL SECURITY: Real Perfect Forward Secrecy implementation + // Real Perfect Forward Secrecy implementation this.ephemeralKeyPairs = new Map(); // Store ephemeral keys for current session only this.sessionStartTime = Date.now(); // Track session lifetime for PFS this.messageCounter = 0; @@ -273,7 +234,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida this.expectedSequenceNumber = 0; this.sessionSalt = null; - // CRITICAL SECURITY: Anti-Replay and Message Ordering Protection + // Anti-Replay and Message Ordering Protection this.replayWindowSize = 64; // Sliding window for replay protection this.replayWindow = new Set(); // Track recent sequence numbers this.maxSequenceGap = 100; // Maximum allowed sequence gap @@ -308,9 +269,9 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida this.onFileProgress = null; // ============================================ - // CRITICAL FIX: IV REUSE PREVENTION SYSTEM + // IV REUSE PREVENTION SYSTEM // ============================================ - // SECURE: IV REUSE PREVENTION SYSTEM WITH LIMITS + // IV REUSE PREVENTION SYSTEM WITH LIMITS // ============================================ this._ivTrackingSystem = { usedIVs: new Set(), // Track all used IVs to prevent reuse @@ -332,11 +293,11 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida emergencyMode: false // Emergency mode if IV reuse detected }; - // CRITICAL FIX: IV cleanup tracking + // IV cleanup tracking this._lastIVCleanupTime = null; // ============================================ - // CRITICAL FIX: SECURE ERROR HANDLING SYSTEM + // SECURE ERROR HANDLING SYSTEM // ============================================ this._secureErrorHandler = { errorCategories: { @@ -354,7 +315,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida }; // ============================================ - // CRITICAL FIX: SECURE MEMORY MANAGEMENT SYSTEM + // SECURE MEMORY MANAGEMENT SYSTEM // ============================================ this._secureMemoryManager = { sensitiveData: new WeakMap(), // Track sensitive data for secure cleanup @@ -379,11 +340,6 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida this.maxOldKeys = EnhancedSecureWebRTCManager.LIMITS.MAX_OLD_KEYS; // Keep last 3 key versions for decryption this.peerConnection = null; this.dataChannel = null; - // SECURITY: DTLS protection removed - was security theater - // this.verifiedICEEndpoints = new Set(); // REMOVED: Fake endpoint verification - // this.dtlsClientHelloQueue = new Map(); // REMOVED: Fake DTLS queue - // this.iceVerificationInProgress = false; // REMOVED: Fake ICE verification - // this.dtlsProtectionEnabled = true; // REMOVED: Fake DTLS protection this.securityFeatures = { @@ -397,7 +353,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida hasNonExtractableKeys: false, hasRateLimiting: true, hasEnhancedValidation: false, - hasPFS: true, // CRITICAL SECURITY: Real Perfect Forward Secrecy enabled + hasPFS: true, // Real Perfect Forward Secrecy enabled // Advanced Features (Session Managed) hasNestedEncryption: false, @@ -410,7 +366,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida }; this._secureLog('info', 'πŸ”’ Enhanced WebRTC Manager initialized with tiered security'); - // SECURE: Log configuration for debugging + // Log configuration for debugging this._secureLog('info', 'πŸ”’ Configuration loaded from constructor parameters', { fakeTraffic: this._config.fakeTraffic.enabled, decoyChannels: this._config.decoyChannels.enabled, @@ -418,10 +374,10 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida antiFingerprinting: this._config.antiFingerprinting.enabled }); - // SECURE: XSS Hardening - replace all window.DEBUG_MODE references + // XSS Hardening - replace all window.DEBUG_MODE references this._hardenDebugModeReferences(); - // SECURE: Initialize unified scheduler for all maintenance tasks + // Initialize unified scheduler for all maintenance tasks this._initializeUnifiedScheduler(); this._syncSecurityFeaturesWithTariff(); @@ -436,7 +392,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida // 1. Nested Encryption Layer this.nestedEncryptionKey = null; - // CRITICAL FIX: Removed nestedEncryptionIV and nestedEncryptionCounter + // Removed nestedEncryptionIV and nestedEncryptionCounter // Each nested encryption now generates fresh random IV for maximum security // 2. Packet Padding @@ -560,7 +516,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL SECURITY: Create AAD with sequence number for anti-replay protection + * Create AAD with sequence number for anti-replay protection * This binds each message to its sequence number and prevents replay attacks */ _createMessageAAD(messageType, messageData = null, isFileMessage = false) { @@ -603,13 +559,13 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL SECURITY: Generate next sequence number for outgoing messages + * Generate next sequence number for outgoing messages * This ensures unique ordering and prevents replay attacks */ _generateNextSequenceNumber() { const nextSeq = this.sequenceNumber++; - // CRITICAL SECURITY: Reset sequence number if it gets too large + // Reset sequence number if it gets too large if (this.sequenceNumber > Number.MAX_SAFE_INTEGER - 1000) { this.sequenceNumber = 0; this.expectedSequenceNumber = 0; @@ -623,10 +579,10 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Enhanced mutex system initialization with atomic protection + * Enhanced mutex system initialization with atomic protection */ _initializeMutexSystem() { - // CRITICAL FIX: Initialize standard mutexes with enhanced state tracking + // Initialize standard mutexes with enhanced state tracking this._keyOperationMutex = { locked: false, queue: [], @@ -654,7 +610,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida operationCount: 0 }; - // CRITICAL FIX: Enhanced key system state with atomic operation tracking + // Enhanced key system state with atomic operation tracking this._keySystemState = { isInitializing: false, isRotating: false, @@ -666,7 +622,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida maxConcurrentOperations: 1 }; - // CRITICAL FIX: Operation counters with atomic increments + // Operation counters with atomic increments this._operationCounters = { keyOperations: 0, cryptoOperations: 0, @@ -683,39 +639,33 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * SECURE: XSS Hardening - Debug mode references validation + * XSS Hardening - Debug mode references validation * This method is called during initialization to ensure XSS hardening */ _hardenDebugModeReferences() { - // SECURE: Log that we're hardening debug mode references + // Log that we're hardening debug mode references this._secureLog('info', 'πŸ”’ XSS Hardening: Debug mode references already replaced'); - - // SECURE: All debug mode checks now use this._debugMode instead of window.DEBUG_MODE - // This prevents XSS attacks through global variable manipulation - - // SECURE: Note: This function is called during initialization - // All window.DEBUG_MODE references have been replaced by the build process } /** - * SECURE: Unified scheduler for all maintenance tasks + * Unified scheduler for all maintenance tasks * Replaces multiple setInterval calls with a single, controlled scheduler */ _initializeUnifiedScheduler() { - // SECURE: Single scheduler interval for all maintenance tasks + // Single scheduler interval for all maintenance tasks this._maintenanceScheduler = setInterval(() => { this._executeMaintenanceCycle(); }, 300000); // Every 5 minutes - // SECURE: Log scheduler initialization + // Log scheduler initialization this._secureLog('info', 'πŸ”§ Unified maintenance scheduler initialized (5-minute cycle)'); - // SECURE: Store scheduler reference for cleanup + // Store scheduler reference for cleanup this._activeTimers = new Set([this._maintenanceScheduler]); } /** - * SECURE: Execute all maintenance tasks in a single cycle + * Execute all maintenance tasks in a single cycle */ _executeMaintenanceCycle() { try { @@ -757,13 +707,13 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida message: error?.message || 'Unknown error' }); - // SECURE: Emergency cleanup on failure + // Emergency cleanup on failure this._emergencyCleanup(); } } /** - * SECURE: Enforce hard resource limits with emergency cleanup + * Enforce hard resource limits with emergency cleanup */ _enforceResourceLimits() { const violations = []; @@ -816,7 +766,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * SECURE: Emergency cleanup when resource limits are exceeded + * Emergency cleanup when resource limits are exceeded */ _emergencyCleanup() { this._secureLog('warn', '🚨 EMERGENCY: Resource limits exceeded, performing emergency cleanup'); @@ -879,7 +829,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida this._secureMemoryManager.cleanupQueue.length = 0; this._secureMemoryManager.memoryStats.lastCleanup = Date.now(); - // SECURE: Force multiple garbage collection cycles + // Force multiple garbage collection cycles if (typeof window.gc === 'function') { try { // Multiple GC cycles for thorough cleanup @@ -909,13 +859,13 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida message: error?.message || 'Unknown error' }); - // SECURE: Rollback mechanism (simplified) + // Rollback mechanism (simplified) this._secureMemoryManager.isCleaning = false; } } /** - * SECURE: Validate emergency cleanup success + * Validate emergency cleanup success * @param {Object} originalState - Original state before cleanup * @returns {Object} Validation results */ @@ -947,7 +897,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * SECURE: Cleanup resources based on age and usage + * Cleanup resources based on age and usage */ _cleanupResources() { const now = Date.now(); @@ -975,7 +925,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * SECURE: Monitor key security (replaces _startKeySecurityMonitoring) + * Monitor key security (replaces _startKeySecurityMonitoring) */ _monitorKeySecurity() { if (this._keyStorageStats.activeKeys > 10) { @@ -988,7 +938,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * SECURE: Send heartbeat message (called by unified scheduler) + * Send heartbeat message (called by unified scheduler) */ _sendHeartbeat() { try { @@ -1010,7 +960,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * SECURE: Comprehensive input validation to prevent DoS and injection attacks + * Comprehensive input validation to prevent DoS and injection attacks * @param {any} data - Data to validate * @param {string} context - Context for validation (e.g., 'sendMessage', 'sendSecureMessage') * @returns {Object} Validation result with isValid and sanitizedData @@ -1137,7 +1087,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * SECURE: Calculate approximate object size in bytes + * Calculate approximate object size in bytes * @param {any} obj - Object to calculate size for * @returns {number} Size in bytes */ @@ -1152,7 +1102,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * SECURE: Sanitize string data for input validation + * Sanitize string data for input validation * @param {string} str - String to sanitize * @returns {string} Sanitized string */ @@ -1172,7 +1122,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * SECURE: Sanitize object data for input validation + * Sanitize object data for input validation * @param {any} obj - Object to sanitize * @returns {any} Sanitized object */ @@ -1201,7 +1151,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * SECURE: Rate limiting for message sending + * Rate limiting for message sending * @param {string} context - Context for rate limiting * @returns {boolean} true if rate limit allows */ @@ -1396,7 +1346,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida * @deprecated Use unified scheduler instead */ _startKeySecurityMonitoring() { - // SECURE: Functionality moved to unified scheduler + // Functionality moved to unified scheduler this._secureLog('info', 'πŸ”§ Key security monitoring moved to unified scheduler'); } @@ -1405,12 +1355,12 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida // HELPER METHODS // ============================================ /** - * SECURE: Constant-time key validation to prevent timing attacks + * Constant-time key validation to prevent timing attacks * @param {CryptoKey} key - Key to validate * @returns {boolean} true if key is valid */ _validateKeyConstantTime(key) { - // SECURE: Constant-time validation to prevent timing attacks + // Constant-time validation to prevent timing attacks let isValid = 0; // Check if key is CryptoKey instance (constant-time) @@ -1450,7 +1400,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * SECURE: Constant-time key pair validation + * Constant-time key pair validation * @param {Object} keyPair - Key pair to validate * @returns {boolean} true if key pair is valid */ @@ -1465,7 +1415,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Enhanced secure logging system initialization + * Enhanced secure logging system initialization */ _initializeSecureLogging() { // Logging levels @@ -1477,16 +1427,16 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida trace: 4 }; - // CRITICAL FIX: Ultra-strict levels for production + // Ultra-strict levels for production this._currentLogLevel = this._isProductionMode ? this._logLevels.error : // In production, ONLY critical errors this._logLevels.info; // In development, up to info - // CRITICAL FIX: Reduced log limits to prevent data accumulation + // Reduced log limits to prevent data accumulation this._logCounts = new Map(); this._maxLogCount = this._isProductionMode ? 5 : 50; // Reduced limits - // SECURE: Hard resource limits to prevent memory leaks + // Hard resource limits to prevent memory leaks this._resourceLimits = { maxLogEntries: this._isProductionMode ? 100 : 1000, maxMessageQueue: 1000, @@ -1498,7 +1448,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida maxPacketBuffer: 1000 }; - // SECURE: Emergency cleanup thresholds + // Emergency cleanup thresholds this._emergencyThresholds = { logEntries: this._resourceLimits.maxLogEntries * 0.8, // 80% messageQueue: this._resourceLimits.maxMessageQueue * 0.8, @@ -1506,7 +1456,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida processedMessageIds: this._resourceLimits.maxProcessedMessageIds * 0.8 }; - // SECURE: Input validation limits to prevent DoS attacks + // Input validation limits to prevent DoS attacks this._inputValidationLimits = { maxStringLength: 100000, // 100KB for strings maxObjectDepth: 10, // Maximum object nesting depth @@ -1517,7 +1467,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida rateLimitBurstSize: 10 // Burst size for rate limiting }; - // SECURE: Malicious pattern detection + // Malicious pattern detection this._maliciousPatterns = [ /)<[^<]*)*<\/script>/gi, // Script tags /javascript:/gi, // JavaScript protocol @@ -1541,7 +1491,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida /valueOf\s*\(/gi // valueOf calls ]; - // CRITICAL FIX: Comprehensive blacklist with all sensitive patterns + // Comprehensive blacklist with all sensitive patterns this._absoluteBlacklist = new Set([ // Cryptographic keys 'encryptionKey', 'macKey', 'metadataKey', 'privateKey', 'publicKey', @@ -1566,7 +1516,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida 'fileHash', 'fileSignature', 'transferKey', 'chunkKey' ]); - // CRITICAL FIX: Minimal whitelist with strict validation + // Minimal whitelist with strict validation this._safeFieldsWhitelist = new Set([ // Basic status fields 'timestamp', 'type', 'status', 'state', 'level', @@ -1585,23 +1535,23 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida 'errorType', 'errorCode', 'phase', 'attempt' ]); - // CRITICAL FIX: Initialize security monitoring + // Initialize security monitoring this._initializeLogSecurityMonitoring(); this._secureLog('info', `πŸ”§ Enhanced secure logging initialized (Production: ${this._isProductionMode})`); } /** - * CRITICAL FIX: Initialize security monitoring for logging system + * Initialize security monitoring for logging system */ _initializeLogSecurityMonitoring() { - // SECURE: Security monitoring moved to unified scheduler + // Security monitoring moved to unified scheduler this._logSecurityViolations = 0; this._maxLogSecurityViolations = 3; } /** - * CRITICAL FIX: Audit logging system security + * Audit logging system security */ _auditLoggingSystemSecurity() { let violations = 0; @@ -1631,7 +1581,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } } /** - * CRITICAL FIX: Shim to redirect arbitrary console.log calls to _secureLog('info', ...) + * Shim to redirect arbitrary console.log calls to _secureLog('info', ...) * Fixed syntax errors and improved error handling */ _secureLogShim(...args) { @@ -1641,7 +1591,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida return; } - // CRITICAL FIX: Proper destructuring with fallback + // Proper destructuring with fallback const message = args[0]; const restArgs = args.slice(1); @@ -1656,13 +1606,13 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida return; } - // CRITICAL FIX: Proper object structure for multiple args + // Proper object structure for multiple args this._secureLog('info', String(message || ''), { additionalArgs: restArgs, argCount: restArgs.length }); } catch (error) { - // CRITICAL FIX: Better error handling - fallback to original console if available + // Better error handling - fallback to original console if available try { if (this._originalConsole?.log) { this._originalConsole.log(...args); @@ -1673,14 +1623,14 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } } /** - * CRITICAL FIX: Redirects global console.log to this instance's secure logger + * Redirects global console.log to this instance's secure logger * Improved error handling and validation */ /** - * SECURE: Setup own logger without touching global console + * Setup own logger without touching global console */ _setupOwnLogger() { - // SECURE: Create own logger without touching global console + // Create own logger without touching global console this.logger = { log: (message, data) => this._secureLog('info', message, data), info: (message, data) => this._secureLog('info', message, data), @@ -1689,7 +1639,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida debug: (message, data) => this._secureLog('debug', message, data) }; - // SECURE: In development, log to console; in production, use secure logging only + // In development, log to console; in production, use secure logging only if (EnhancedSecureWebRTCManager.DEBUG_MODE) { this._secureLog('info', 'πŸ”’ Own logger created - development mode'); } else { @@ -1697,10 +1647,10 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } } /** - * SECURE: Production logging - use own logger with minimal output + * Production logging - use own logger with minimal output */ _setupProductionLogging() { - // SECURE: In production, own logger becomes minimal + // In production, own logger becomes minimal if (this._isProductionMode) { this.logger = { log: () => {}, // No-op in production @@ -1714,15 +1664,15 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } } /** - * CRITICAL FIX: Secure logging with enhanced data protection + * Secure logging with enhanced data protection * @param {string} level - Log level (error, warn, info, debug, trace) * @param {string} message - Message * @param {object} data - Optional payload (will be sanitized) */ _secureLog(level, message, data = null) { - // CRITICAL FIX: Pre-sanitization audit to prevent data leakage + // Pre-sanitization audit to prevent data leakage if (data && !this._auditLogMessage(message, data)) { - // CRITICAL FIX: Log the attempt but block the actual data + // Log the attempt but block the actual data this._originalConsole?.error?.('🚨 SECURITY: Logging blocked due to potential data leakage'); return; } @@ -1732,7 +1682,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida return; } - // CRITICAL FIX: Prevent log spam with better key generation + // Prevent log spam with better key generation const logKey = `${level}:${message.substring(0, 50)}`; const currentCount = this._logCounts.get(logKey) || 0; @@ -1742,7 +1692,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida this._logCounts.set(logKey, currentCount + 1); - // CRITICAL FIX: Enhanced sanitization with multiple passes + // Enhanced sanitization with multiple passes let sanitizedData = null; if (data) { // First pass: basic sanitization @@ -1755,14 +1705,14 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } } - // CRITICAL FIX: Production mode security - only log essential errors + // Production mode security - only log essential errors if (this._isProductionMode) { if (level === 'error') { - // CRITICAL FIX: In production, only log error messages without sensitive data + // In production, only log error messages without sensitive data const safeMessage = this._sanitizeString(message); this._originalConsole?.error?.(safeMessage); } - // CRITICAL FIX: Block all other log levels in production + // Block all other log levels in production return; } @@ -1775,10 +1725,10 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } } /** - * CRITICAL FIX: Enhanced sanitization for log data with multiple security layers + * Enhanced sanitization for log data with multiple security layers */ _sanitizeLogData(data) { - // CRITICAL FIX: Pre-check for sensitive content before processing + // Pre-check for sensitive content before processing if (typeof data === 'string') { return this._sanitizeString(data); } @@ -1792,7 +1742,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida for (const [key, value] of Object.entries(data)) { const lowerKey = key.toLowerCase(); - // CRITICAL FIX: Enhanced blacklist with more comprehensive patterns + // Enhanced blacklist with more comprehensive patterns const blacklistPatterns = [ 'key', 'secret', 'token', 'password', 'credential', 'auth', 'fingerprint', 'salt', 'signature', 'private', 'encryption', @@ -1808,9 +1758,9 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida continue; } - // CRITICAL FIX: Enhanced whitelist with strict validation + // Enhanced whitelist with strict validation if (this._safeFieldsWhitelist.has(key)) { - // CRITICAL FIX: Even whitelisted fields get sanitized if they contain sensitive data + // Even whitelisted fields get sanitized if they contain sensitive data if (typeof value === 'string') { sanitized[key] = this._sanitizeString(value); } else { @@ -1819,16 +1769,16 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida continue; } - // CRITICAL FIX: Enhanced type handling with security checks + // Enhanced type handling with security checks if (typeof value === 'boolean' || typeof value === 'number') { sanitized[key] = value; } else if (typeof value === 'string') { sanitized[key] = this._sanitizeString(value); } else if (value instanceof ArrayBuffer || value instanceof Uint8Array) { - // CRITICAL FIX: Don't reveal actual byte lengths for security + // Don't reveal actual byte lengths for security sanitized[key] = `[${value.constructor.name}( bytes)]`; } else if (value && typeof value === 'object') { - // CRITICAL FIX: Recursive sanitization with depth limit and security check + // Recursive sanitization with depth limit and security check try { sanitized[key] = this._sanitizeLogData(value); } catch (error) { @@ -1839,7 +1789,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } } - // CRITICAL FIX: Final security check on sanitized data + // Final security check on sanitized data const sanitizedString = JSON.stringify(sanitized); if (this._containsSensitiveContent(sanitizedString)) { return { error: 'SANITIZATION_FAILED_SENSITIVE_CONTENT_DETECTED' }; @@ -1848,14 +1798,14 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida return sanitized; } /** - * CRITICAL FIX: Enhanced sanitization for strings with comprehensive pattern detection + * Enhanced sanitization for strings with comprehensive pattern detection */ _sanitizeString(str) { if (typeof str !== 'string' || str.length === 0) { return str; } - // CRITICAL FIX: Comprehensive sensitive pattern detection + // Comprehensive sensitive pattern detection const sensitivePatterns = [ // Hex patterns (various lengths) /[a-f0-9]{16,}/i, // 16+ hex chars (covers short keys) @@ -1909,20 +1859,20 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida /(session|auth|jwt|bearer)[\s]*[:=][\s]*[A-Za-z0-9\-_]{8,}/i, ]; - // CRITICAL FIX: Check for sensitive patterns with early return + // Check for sensitive patterns with early return for (const pattern of sensitivePatterns) { if (pattern.test(str)) { - // CRITICAL FIX: Always fully hide sensitive data + // Always fully hide sensitive data return '[SENSITIVE_DATA_REDACTED]'; } } - // CRITICAL FIX: Check for suspicious entropy (high randomness indicates keys) + // Check for suspicious entropy (high randomness indicates keys) if (this._hasHighEntropy(str)) { return '[HIGH_ENTROPY_DATA_REDACTED]'; } - // CRITICAL FIX: Check for suspicious character distributions + // Check for suspicious character distributions if (this._hasSuspiciousDistribution(str)) { return '[SUSPICIOUS_DATA_REDACTED]'; } @@ -1935,7 +1885,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida return str; } /** - * CRITICAL FIX: Enhanced sensitive content detection + * Enhanced sensitive content detection */ _containsSensitiveContent(str) { if (typeof str !== 'string') return false; @@ -1958,7 +1908,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Check for high entropy strings (likely cryptographic keys) + * Check for high entropy strings (likely cryptographic keys) */ _hasHighEntropy(str) { if (str.length < 8) return false; @@ -1983,7 +1933,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Check for suspicious character distributions + * Check for suspicious character distributions */ _hasSuspiciousDistribution(str) { if (str.length < 8) return false; @@ -2014,46 +1964,6 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida return false; } - // ============================================ - // SECURITY: DTLS FUNCTIONS REMOVED - // ============================================ - // - // REMOVED: validateDTLSSource() - was security theater - // REASON: Browser WebRTC doesn't provide DTLS layer access - // - // REAL SECURITY: Implement proper key verification instead: - // - Out-of-band fingerprint verification (SAS/QR) - // - SDP certificate fingerprint validation - // - Public key pinning - // - Certificate transparency checks - // - - /** - * REMOVED: addVerifiedICEEndpoint() - was part of fake DTLS protection - * - * REAL SECURITY: Use proper endpoint verification: - * - ICE candidate validation - * - SDP integrity checks - * - Certificate fingerprint validation - */ - - /** - * REMOVED: handleDTLSClientHello() - was part of fake DTLS protection - * - * REAL SECURITY: Browser handles DTLS automatically - * - No JavaScript access to DTLS layer - * - Focus on application-level security - * - Implement proper key verification - */ - - /** - * REMOVED: completeICEVerification() - was part of fake DTLS protection - * - * REAL SECURITY: ICE verification happens automatically in WebRTC - * - Browser handles ICE candidate validation - * - Focus on application-level security measures - * - Implement proper connection verification - */ // ============================================ // SECURE LOGGING SYSTEM @@ -2085,25 +1995,25 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida * Sets up a secure global API with limited access */ _setupSecureGlobalAPI() { - // SECURE: Log that we're starting API setup + // Log that we're starting API setup this._secureLog('info', 'πŸ”’ Starting secure global API setup'); - // SECURE: Create simple public API with safety checks + // Create simple public API with safety checks const secureAPI = {}; - // SECURE: Only bind methods that exist + // Only bind methods that exist if (typeof this.sendMessage === 'function') { secureAPI.sendMessage = this.sendMessage.bind(this); } - // SECURE: Create simple getConnectionStatus method + // Create simple getConnectionStatus method secureAPI.getConnectionStatus = () => ({ isConnected: this.isConnected ? this.isConnected() : false, isVerified: this.isVerified || false, connectionState: this.peerConnection?.connectionState || 'disconnected' }); - // SECURE: Create simple getSecurityStatus method + // Create simple getSecurityStatus method secureAPI.getSecurityStatus = () => ({ securityLevel: this.currentSecurityLevel || 'basic', stage: 'initialized', @@ -2114,7 +2024,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida secureAPI.sendFile = this.sendFile.bind(this); } - // SECURE: Create simple getFileTransferStatus method + // Create simple getFileTransferStatus method secureAPI.getFileTransferStatus = () => ({ initialized: !!this.fileTransferSystem, status: 'ready', @@ -2126,7 +2036,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida secureAPI.disconnect = this.disconnect.bind(this); } - // SECURE: Create simple API object with safety checks + // Create simple API object with safety checks const safeGlobalAPI = { ...secureAPI, // Spread only existing methods getConfiguration: () => ({ @@ -2138,7 +2048,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida emergency: {} }; - // SECURE: Only add emergency methods that exist + // Only add emergency methods that exist if (typeof this._emergencyUnlockAllMutexes === 'function') { safeGlobalAPI.emergency.unlockAllMutexes = this._emergencyUnlockAllMutexes.bind(this); } @@ -2155,7 +2065,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida safeGlobalAPI.emergency.resetLogging = this._resetLoggingSystem.bind(this); } - // SECURE: Add file transfer system status + // Add file transfer system status safeGlobalAPI.getFileTransferSystemStatus = () => ({ initialized: !!this.fileTransferSystem, status: 'ready', @@ -2163,7 +2073,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida receivingTransfers: 0 }); - // SECURE: Log available methods for debugging + // Log available methods for debugging this._secureLog('info', 'πŸ”’ API methods available', { sendMessage: !!secureAPI.sendMessage, getConnectionStatus: !!secureAPI.getConnectionStatus, @@ -2175,27 +2085,27 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida emergencyMethods: Object.keys(safeGlobalAPI.emergency).length }); - // SECURE: Apply Object.freeze to prevent modification + // Apply Object.freeze to prevent modification Object.freeze(safeGlobalAPI); Object.freeze(safeGlobalAPI.emergency); - // SECURE: Export API once without monitoring + // Export API once without monitoring this._createProtectedGlobalAPI(safeGlobalAPI); - // SECURE: Setup minimal protection + // Setup minimal protection this._setupMinimalGlobalProtection(); - // SECURE: Log that API setup is complete + // Log that API setup is complete this._secureLog('info', 'πŸ”’ Secure global API setup completed successfully'); } /** - * SECURE: Create simple global API export + * Create simple global API export */ _createProtectedGlobalAPI(safeGlobalAPI) { - // SECURE: Log that we're creating protected global API + // Log that we're creating protected global API this._secureLog('info', 'πŸ”’ Creating protected global API'); - // SECURE: Simple API export without proxy or monitoring + // Simple API export without proxy or monitoring if (!window.secureBitChat) { this._exportAPI(safeGlobalAPI); } else { @@ -2204,13 +2114,13 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * SECURE: Simple API export without monitoring + * Simple API export without monitoring */ _exportAPI(apiObject) { - // SECURE: Log that we're exporting API + // Log that we're exporting API this._secureLog('info', 'πŸ”’ Exporting API to window.secureBitChat'); - // SECURE: Check if important methods are available + // Check if important methods are available if (!this._importantMethods || !this._importantMethods.defineProperty) { this._secureLog('error', '❌ Important methods not available for API export, using fallback'); // Fallback to direct Object.defineProperty @@ -2221,7 +2131,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida enumerable: true }); } else { - // SECURE: One-time export with immutable properties + // One-time export with immutable properties this._importantMethods.defineProperty(window, 'secureBitChat', { value: apiObject, writable: false, @@ -2234,20 +2144,20 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * SECURE: Setup minimal global protection + * Setup minimal global protection */ _setupMinimalGlobalProtection() { - // SECURE: Simple protection without monitoring (methods already stored) + // Simple protection without monitoring (methods already stored) this._protectGlobalAPI(); this._secureLog('info', 'πŸ”’ Minimal global protection activated'); } /** - * SECURE: Store important methods in closure for local use + * Store important methods in closure for local use */ _storeImportantMethods() { - // SECURE: Store references to important methods locally + // Store references to important methods locally this._importantMethods = { defineProperty: Object.defineProperty, getOwnPropertyDescriptor: Object.getOwnPropertyDescriptor, @@ -2265,20 +2175,20 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * SECURE: Simple protection without monitoring + * Simple protection without monitoring */ _setupSimpleProtection() { this._secureLog('info', 'πŸ”’ Simple protection activated - no monitoring'); } /** - * SECURE: No global exposure prevention needed + * No global exposure prevention needed */ _preventGlobalExposure() { this._secureLog('info', 'πŸ”’ No global exposure prevention - using secure API export only'); } /** - * SECURE: API integrity check - only at initialization + * API integrity check - only at initialization */ _verifyAPIIntegrity() { try { @@ -2308,24 +2218,24 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida // ============================================ /** - * SECURE: Simple global exposure check - only at initialization + * Simple global exposure check - only at initialization */ _auditGlobalExposure() { - // SECURE: Only check once at initialization, no periodic scanning + // Only check once at initialization, no periodic scanning this._secureLog('info', 'πŸ”’ Global exposure check completed at initialization'); return []; } /** - * SECURE: No periodic security audits - only at initialization + * No periodic security audits - only at initialization */ _startSecurityAudit() { - // SECURE: Only audit once at initialization, no periodic checks + // Only audit once at initialization, no periodic checks this._secureLog('info', 'πŸ”’ Security audit completed at initialization - no periodic monitoring'); } /** - * SECURE: Simple global API protection + * Simple global API protection */ _protectGlobalAPI() { if (!window.secureBitChat) { @@ -2334,7 +2244,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } try { - // SECURE: Validate API integrity once + // Validate API integrity once if (this._validateAPIIntegrityOnce()) { this._secureLog('info', 'πŸ”’ Global API protection verified'); } @@ -2348,11 +2258,11 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * SECURE: Validate API integrity once at initialization + * Validate API integrity once at initialization */ _validateAPIIntegrityOnce() { try { - // SECURE: Check if API is properly configured + // Check if API is properly configured if (!this._importantMethods || !this._importantMethods.getOwnPropertyDescriptor) { // Fallback to direct Object.getOwnPropertyDescriptor const descriptor = Object.getOwnPropertyDescriptor(window, 'secureBitChat'); @@ -2381,13 +2291,13 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Secure memory wipe for sensitive data + * Secure memory wipe for sensitive data */ _secureWipeMemory(data, context = 'unknown') { if (!data) return; try { - // CRITICAL FIX: Different handling for different data types + // Different handling for different data types if (data instanceof ArrayBuffer) { this._secureWipeArrayBuffer(data, context); } else if (data instanceof Uint8Array) { @@ -2415,7 +2325,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Secure wipe for ArrayBuffer + * Secure wipe for ArrayBuffer */ _secureWipeArrayBuffer(buffer, context) { if (!buffer || buffer.byteLength === 0) return; @@ -2423,16 +2333,16 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida try { const view = new Uint8Array(buffer); - // CRITICAL FIX: Overwrite with random data first + // Overwrite with random data first crypto.getRandomValues(view); - // CRITICAL FIX: Overwrite with zeros + // Overwrite with zeros view.fill(0); - // CRITICAL FIX: Overwrite with ones + // Overwrite with ones view.fill(255); - // CRITICAL FIX: Final zero overwrite + // Final zero overwrite view.fill(0); this._secureLog('debug', 'πŸ”’ ArrayBuffer securely wiped', { @@ -2449,22 +2359,22 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Secure wipe for Uint8Array + * Secure wipe for Uint8Array */ _secureWipeUint8Array(array, context) { if (!array || array.length === 0) return; try { - // CRITICAL FIX: Overwrite with random data first + // Overwrite with random data first crypto.getRandomValues(array); - // CRITICAL FIX: Overwrite with zeros + // Overwrite with zeros array.fill(0); - // CRITICAL FIX: Overwrite with ones + // Overwrite with ones array.fill(255); - // CRITICAL FIX: Final zero overwrite + // Final zero overwrite array.fill(0); this._secureLog('debug', 'πŸ”’ Uint8Array securely wiped', { @@ -2481,20 +2391,20 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Secure wipe for arrays + * Secure wipe for arrays */ _secureWipeArray(array, context) { if (!Array.isArray(array) || array.length === 0) return; try { - // CRITICAL FIX: Recursively wipe each element + // Recursively wipe each element array.forEach((item, index) => { if (item !== null && item !== undefined) { this._secureWipeMemory(item, `${context}[${index}]`); } }); - // CRITICAL FIX: Fill with nulls + // Fill with nulls array.fill(null); this._secureLog('debug', 'πŸ”’ Array securely wiped', { @@ -2511,10 +2421,10 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * SECURE: No string wiping - strings are immutable in JS + * No string wiping - strings are immutable in JS */ _secureWipeString(str, context) { - // SECURE: Strings are immutable in JavaScript, no need to wipe + // Strings are immutable in JavaScript, no need to wipe // Just remove the reference this._secureLog('debug', 'πŸ”’ String reference removed (strings are immutable)', { context: context, @@ -2523,18 +2433,18 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * SECURE: CryptoKey cleanup - store in WeakMap for proper GC + * CryptoKey cleanup - store in WeakMap for proper GC */ _secureWipeCryptoKey(key, context) { if (!key || !(key instanceof CryptoKey)) return; try { - // SECURE: Store in WeakMap for proper garbage collection + // Store in WeakMap for proper garbage collection if (!this._cryptoKeyStorage) { this._cryptoKeyStorage = new WeakMap(); } - // SECURE: Store reference for cleanup tracking + // Store reference for cleanup tracking this._cryptoKeyStorage.set(key, { context: context, timestamp: Date.now(), @@ -2555,18 +2465,18 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Secure wipe for objects + * Secure wipe for objects */ _secureWipeObject(obj, context) { if (!obj || typeof obj !== 'object') return; try { - // CRITICAL FIX: Recursively wipe all properties + // Recursively wipe all properties for (const [key, value] of Object.entries(obj)) { if (value !== null && value !== undefined) { this._secureWipeMemory(value, `${context}.${key}`); } - // CRITICAL FIX: Set property to null + // Set property to null obj[key] = null; } @@ -2584,11 +2494,11 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Secure cleanup of cryptographic materials + * Secure cleanup of cryptographic materials */ _secureCleanupCryptographicMaterials() { try { - // CRITICAL FIX: Secure wipe of key pairs + // Secure wipe of key pairs if (this.ecdhKeyPair) { this._secureWipeMemory(this.ecdhKeyPair, 'ecdhKeyPair'); this.ecdhKeyPair = null; @@ -2599,7 +2509,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida this.ecdsaKeyPair = null; } - // CRITICAL FIX: Secure wipe of derived keys + // Secure wipe of derived keys if (this.encryptionKey) { this._secureWipeMemory(this.encryptionKey, 'encryptionKey'); this.encryptionKey = null; @@ -2620,7 +2530,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida this.nestedEncryptionKey = null; } - // CRITICAL FIX: Secure wipe of session data + // Secure wipe of session data if (this.sessionSalt) { this._secureWipeMemory(this.sessionSalt, 'sessionSalt'); this.sessionSalt = null; @@ -2662,11 +2572,11 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Force garbage collection if available + * Force garbage collection if available */ _forceGarbageCollection() { try { - // CRITICAL FIX: Try to force garbage collection if available + // Try to force garbage collection if available if (typeof window.gc === 'function') { window.gc(); this._secureLog('debug', 'πŸ”’ Garbage collection forced'); @@ -2684,16 +2594,16 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Perform periodic memory cleanup + * Perform periodic memory cleanup */ _performPeriodicMemoryCleanup() { try { this._secureMemoryManager.isCleaning = true; - // CRITICAL FIX: Clean up any remaining sensitive data + // Clean up any remaining sensitive data this._secureCleanupCryptographicMaterials(); - // CRITICAL FIX: Clean up message queue if it's too large + // Clean up message queue if it's too large if (this.messageQueue && this.messageQueue.length > 100) { const excessMessages = this.messageQueue.splice(0, this.messageQueue.length - 50); excessMessages.forEach((message, index) => { @@ -2701,12 +2611,12 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida }); } - // CRITICAL FIX: Clean up processed message IDs if too many + // Clean up processed message IDs if too many if (this.processedMessageIds && this.processedMessageIds.size > 1000) { this.processedMessageIds.clear(); } - // CRITICAL FIX: Force garbage collection + // Force garbage collection this._forceGarbageCollection(); this._secureLog('debug', 'πŸ”’ Periodic memory cleanup completed'); @@ -2722,17 +2632,17 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Create secure error message without information disclosure + * Create secure error message without information disclosure */ _createSecureErrorMessage(originalError, context = 'unknown') { try { - // CRITICAL FIX: Categorize error for appropriate handling + // Categorize error for appropriate handling const category = this._categorizeError(originalError); - // CRITICAL FIX: Generate safe error message based on category + // Generate safe error message based on category const safeMessage = this._getSafeErrorMessage(category, context); - // CRITICAL FIX: Log detailed error internally for debugging + // Log detailed error internally for debugging this._secureLog('error', 'Internal error occurred', { category: category, context: context, @@ -2740,13 +2650,13 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida timestamp: Date.now() }); - // CRITICAL FIX: Track error frequency + // Track error frequency this._trackErrorFrequency(category); return safeMessage; } catch (error) { - // CRITICAL FIX: Fallback to generic error if error handling fails + // Fallback to generic error if error handling fails this._secureLog('error', 'Error handling failed', { originalError: originalError?.message || 'Unknown', handlingError: error.message @@ -2756,7 +2666,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Categorize error for appropriate handling + * Categorize error for appropriate handling */ _categorizeError(error) { if (!error || !error.message) { @@ -2765,7 +2675,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida const message = error.message.toLowerCase(); - // CRITICAL FIX: Cryptographic errors + // Cryptographic errors if (message.includes('crypto') || message.includes('key') || message.includes('encrypt') || @@ -2777,7 +2687,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida return this._secureErrorHandler.errorCategories.CRYPTOGRAPHIC; } - // CRITICAL FIX: Network errors + // Network errors if (message.includes('network') || message.includes('connection') || message.includes('timeout') || @@ -2786,7 +2696,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida return this._secureErrorHandler.errorCategories.NETWORK; } - // CRITICAL FIX: Validation errors + // Validation errors if (message.includes('invalid') || message.includes('validation') || message.includes('format') || @@ -2794,7 +2704,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida return this._secureErrorHandler.errorCategories.VALIDATION; } - // CRITICAL FIX: System errors + // System errors if (message.includes('system') || message.includes('internal') || message.includes('memory') || @@ -2806,7 +2716,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Get safe error message based on category + * Get safe error message based on category */ _getSafeErrorMessage(category, context) { const safeMessages = { @@ -2845,7 +2755,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida const categoryMessages = safeMessages[category] || safeMessages[this._secureErrorHandler.errorCategories.UNKNOWN]; - // CRITICAL FIX: Determine specific context for more precise message + // Determine specific context for more precise message let specificContext = 'default'; if (context.includes('key') || context.includes('crypto')) { specificContext = category === this._secureErrorHandler.errorCategories.CRYPTOGRAPHIC ? 'key_generation' : 'default'; @@ -2859,22 +2769,22 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Track error frequency for security monitoring + * Track error frequency for security monitoring */ _trackErrorFrequency(category) { const now = Date.now(); - // CRITICAL FIX: Clean old error counts + // Clean old error counts if (now - this._secureErrorHandler.lastErrorTime > 60000) { // 1 minute this._secureErrorHandler.errorCounts.clear(); } - // CRITICAL FIX: Increment error count + // Increment error count const currentCount = this._secureErrorHandler.errorCounts.get(category) || 0; this._secureErrorHandler.errorCounts.set(category, currentCount + 1); this._secureErrorHandler.lastErrorTime = now; - // CRITICAL FIX: Check if we're exceeding error threshold + // Check if we're exceeding error threshold const totalErrors = Array.from(this._secureErrorHandler.errorCounts.values()).reduce((sum, count) => sum + count, 0); if (totalErrors > this._secureErrorHandler.errorThreshold) { @@ -2887,7 +2797,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Throw secure error without information disclosure + * Throw secure error without information disclosure */ _throwSecureError(originalError, context = 'unknown') { const secureMessage = this._createSecureErrorMessage(originalError, context); @@ -2895,7 +2805,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Get error handling statistics + * Get error handling statistics */ _getErrorHandlingStats() { return { @@ -2907,7 +2817,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Reset error handling system + * Reset error handling system */ _resetErrorHandlingSystem() { this._secureErrorHandler.errorCounts.clear(); @@ -2918,7 +2828,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Get memory management statistics + * Get memory management statistics */ _getMemoryManagementStats() { return { @@ -2931,17 +2841,17 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL FIX: Validate API integrity and security + * Validate API integrity and security */ _validateAPIIntegrity() { try { - // CRITICAL FIX: Check if API exists + // Check if API exists if (!window.secureBitChat) { this._secureLog('error', '❌ Global API not found during integrity validation'); return false; } - // CRITICAL FIX: Validate required methods exist + // Validate required methods exist const requiredMethods = ['sendMessage', 'getConnectionStatus', 'getSecurityStatus', 'sendFile', 'disconnect']; const missingMethods = requiredMethods.filter(method => !window.secureBitChat[method] || typeof window.secureBitChat[method] !== 'function' @@ -2954,7 +2864,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida return false; } - // CRITICAL FIX: Test method binding integrity + // Test method binding integrity const testContext = { test: true }; const boundMethods = requiredMethods.map(method => { try { @@ -2972,7 +2882,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida return false; } - // CRITICAL FIX: Test API immutability + // Test API immutability try { const testProp = '_integrity_test_' + Date.now(); Object.defineProperty(window.secureBitChat, testProp, { @@ -3003,7 +2913,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } _validateCryptographicSecurity() { - // SECURE: Check if basic security features are available + // Check if basic security features are available const criticalFeatures = ['hasRateLimiting']; const missingCritical = criticalFeatures.filter(feature => !this.securityFeatures[feature]); @@ -3020,7 +2930,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida }); } - // SECURE: Log current security state + // Log current security state const availableFeatures = Object.keys(this.securityFeatures).filter(f => this.securityFeatures[f]); const encryptionFeatures = ['hasEncryption', 'hasECDH', 'hasECDSA'].filter(f => this.securityFeatures[f]); @@ -3045,7 +2955,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida if (!this.sessionManager || !this.sessionManager.isFeatureAllowedForSession) { this._secureLog('warn', '⚠️ Session manager not available, using safe default security features'); - // SECURE: Keep existing features, only add new ones + // Keep existing features, only add new ones // Don't override hasEncryption and hasECDH if they're already true if (this.securityFeatures.hasEncryption === undefined) { this.securityFeatures.hasEncryption = false; // Will be set to true only after key generation @@ -3211,7 +3121,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida * @deprecated Use unified scheduler instead */ _startSecurityMonitoring() { - // SECURE: All security monitoring moved to unified scheduler + // All security monitoring moved to unified scheduler this._secureLog('info', 'πŸ”§ Security monitoring moved to unified scheduler'); } /** @@ -3237,7 +3147,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL SECURITY: Hard gate for traffic blocking without verification + * Hard gate for traffic blocking without verification * This method enforces that NO traffic (including system messages and file transfers) * can pass through without proper cryptographic verification */ @@ -3260,7 +3170,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL SECURITY: Safe method to set isVerified only after cryptographic verification + * Safe method to set isVerified only after cryptographic verification * This is the ONLY method that should set isVerified = true */ _setVerifiedStatus(verified, verificationMethod = 'unknown', verificationData = null) { @@ -3295,7 +3205,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL SECURITY: Create AAD (Additional Authenticated Data) for file messages + * Create AAD (Additional Authenticated Data) for file messages * This binds file messages to the current session and prevents replay attacks */ _createFileMessageAAD(messageType, messageData = null) { @@ -3308,7 +3218,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL SECURITY: Validate AAD for file messages + * Validate AAD for file messages * This ensures file messages are bound to the correct session */ _validateFileMessageAAD(aadString, expectedMessageType = null) { @@ -3344,7 +3254,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL SECURITY: Extract DTLS fingerprint from SDP + * Extract DTLS fingerprint from SDP * This is essential for MITM protection */ _extractDTLSFingerprintFromSDP(sdp) { @@ -3402,7 +3312,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL SECURITY: Validate DTLS fingerprint against expected value + * Validate DTLS fingerprint against expected value * This prevents MITM attacks by ensuring the remote peer has the expected certificate */ _validateDTLSFingerprint(receivedFingerprint, expectedFingerprint, context = 'unknown') { @@ -3443,7 +3353,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL SECURITY: Compute SAS (Short Authentication String) for MITM protection + * Compute SAS (Short Authentication String) for MITM protection * Uses HKDF with DTLS fingerprints to generate a stable 7-digit verification code * @param {ArrayBuffer|Uint8Array} keyMaterialRaw - Shared secret or key fingerprint data * @param {string} localFP - Local DTLS fingerprint @@ -3560,7 +3470,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL SECURITY: Emergency key wipe on fingerprint mismatch + * Emergency key wipe on fingerprint mismatch * This ensures no sensitive data remains if MITM is detected */ _emergencyWipeOnFingerprintMismatch(reason = 'DTLS fingerprint mismatch') { @@ -3576,10 +3486,10 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida this._secureWipeMemory(this.macKey, 'emergency_wipe'); this._secureWipeMemory(this.metadataKey, 'emergency_wipe'); - // CRITICAL SECURITY: Wipe ephemeral keys for PFS + // Wipe ephemeral keys for PFS this._wipeEphemeralKeys(); - // CRITICAL SECURITY: Hard wipe old keys for PFS + // Hard wipe old keys for PFS this._hardWipeOldKeys(); // Reset verification status @@ -3601,7 +3511,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL SECURITY: Set expected DTLS fingerprint via out-of-band channel + * Set expected DTLS fingerprint via out-of-band channel * This should be called after receiving the fingerprint through a secure channel * (e.g., QR code, voice call, in-person exchange, etc.) */ @@ -3636,7 +3546,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL SECURITY: Get current DTLS fingerprint for out-of-band verification + * Get current DTLS fingerprint for out-of-band verification * This should be shared through a secure channel (QR code, voice, etc.) */ getCurrentDTLSFingerprint() { @@ -3676,7 +3586,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL SECURITY: Generate ephemeral ECDH keys for Perfect Forward Secrecy + * Generate ephemeral ECDH keys for Perfect Forward Secrecy * This ensures each session has unique, non-persistent keys */ async _generateEphemeralECDHKeys() { @@ -3714,7 +3624,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL SECURITY: Hard wipe old keys for real PFS + * Hard wipe old keys for real PFS * This prevents retrospective decryption attacks */ _hardWipeOldKeys() { @@ -3761,7 +3671,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL SECURITY: Wipe ephemeral keys when session ends + * Wipe ephemeral keys when session ends * This ensures session-specific keys are destroyed */ _wipeEphemeralKeys() { @@ -3804,7 +3714,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL SECURITY: Encrypt file messages with AAD + * Encrypt file messages with AAD * This ensures file messages are properly authenticated and bound to session */ async _encryptFileMessage(messageData, aad) { @@ -3840,7 +3750,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } /** - * CRITICAL SECURITY: Decrypt file messages with AAD validation + * Decrypt file messages with AAD validation * This ensures file messages are properly authenticated and bound to session */ async _decryptFileMessage(encryptedMessageString) { @@ -3856,7 +3766,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida throw new Error('Key fingerprint mismatch in encrypted file message'); } - // CRITICAL SECURITY: Validate AAD with sequence number + // Validate AAD with sequence number const aad = this._validateMessageAAD(encryptedMessage.aad, 'file_message'); if (!this.encryptionKey) { @@ -4070,20 +3980,20 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida return filteredResults.includes(result); } /** - * CRITICAL FIX: Enhanced log cleanup with security checks + * Enhanced log cleanup with security checks */ _cleanupLogs() { - // CRITICAL FIX: More aggressive cleanup to prevent data accumulation + // More aggressive cleanup to prevent data accumulation if (this._logCounts.size > 500) { this._logCounts.clear(); this._secureLog('debug', '🧹 Log counts cleared due to size limit'); } - // CRITICAL FIX: Clean up old log entries to prevent memory leaks + // Clean up old log entries to prevent memory leaks const now = Date.now(); const maxAge = 300000; // 5 minutes - // CRITICAL FIX: Check for suspicious log patterns + // Check for suspicious log patterns let suspiciousCount = 0; for (const [key, count] of this._logCounts.entries()) { if (count > 10) { @@ -4091,24 +4001,24 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } } - // CRITICAL FIX: Emergency cleanup if too many suspicious patterns + // Emergency cleanup if too many suspicious patterns if (suspiciousCount > 20) { this._logCounts.clear(); this._secureLog('warn', '🚨 Emergency log cleanup due to suspicious patterns'); } - // CRITICAL FIX: Reset security violation counter if system is stable + // Reset security violation counter if system is stable if (this._logSecurityViolations > 0 && suspiciousCount < 5) { this._logSecurityViolations = Math.max(0, this._logSecurityViolations - 1); } - // CRITICAL FIX: Clean up old IVs periodically + // Clean up old IVs periodically if (!this._lastIVCleanupTime || Date.now() - this._lastIVCleanupTime > 300000) { // Every 5 minutes this._cleanupOldIVs(); this._lastIVCleanupTime = Date.now(); } - // CRITICAL FIX: Periodic secure memory cleanup + // Periodic secure memory cleanup if (!this._secureMemoryManager.memoryStats.lastCleanup || Date.now() - this._secureMemoryManager.memoryStats.lastCleanup > 600000) { // Every 10 minutes this._performPeriodicMemoryCleanup(); @@ -4116,10 +4026,10 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } } /** - * CRITICAL FIX: Secure logging stats with sensitive data protection + * Secure logging stats with sensitive data protection */ _getLoggingStats() { - // CRITICAL FIX: Only return safe statistics + // Only return safe statistics const stats = { isProductionMode: this._isProductionMode, debugMode: this._debugMode, @@ -4131,7 +4041,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida systemStatus: this._currentLogLevel === -1 ? 'DISABLED' : 'ACTIVE' }; - // CRITICAL FIX: Sanitize any potentially sensitive data + // Sanitize any potentially sensitive data const sanitizedStats = {}; for (const [key, value] of Object.entries(stats)) { if (typeof value === 'string' && this._containsSensitiveContent(value)) { @@ -4144,41 +4054,41 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida return sanitizedStats; } /** - * CRITICAL FIX: Enhanced emergency logging disable with cleanup + * Enhanced emergency logging disable with cleanup */ _emergencyDisableLogging() { - // CRITICAL FIX: Immediately disable all logging levels + // Immediately disable all logging levels this._currentLogLevel = -1; - // CRITICAL FIX: Clear all log data to prevent memory leaks + // Clear all log data to prevent memory leaks this._logCounts.clear(); - // CRITICAL FIX: Clear any cached sensitive data + // Clear any cached sensitive data if (this._logSecurityViolations) { this._logSecurityViolations = 0; } - // CRITICAL FIX: Override _secureLog to a secure no-op + // Override _secureLog to a secure no-op this._secureLog = () => { - // CRITICAL FIX: Only allow emergency console errors + // Only allow emergency console errors if (arguments[0] === 'error' && this._originalConsole?.error) { this._originalConsole.error('🚨 SECURITY: Logging system disabled - potential data exposure prevented'); } }; - // CRITICAL FIX: Store original functions before overriding + // Store original functions before overriding this._originalSanitizeString = this._sanitizeString; this._originalSanitizeLogData = this._sanitizeLogData; this._originalAuditLogMessage = this._auditLogMessage; this._originalContainsSensitiveContent = this._containsSensitiveContent; - // CRITICAL FIX: Override all logging methods to prevent bypass + // Override all logging methods to prevent bypass this._sanitizeString = () => '[LOGGING_DISABLED]'; this._sanitizeLogData = () => ({ error: 'LOGGING_DISABLED' }); this._auditLogMessage = () => false; this._containsSensitiveContent = () => true; // Block everything - // CRITICAL FIX: Force garbage collection if available + // Force garbage collection if available if (typeof window.gc === 'function') { try { window.gc(); @@ -4187,12 +4097,12 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } } - // CRITICAL FIX: Notify about the emergency shutdown + // Notify about the emergency shutdown this._originalConsole?.error?.('🚨 CRITICAL: Secure logging system disabled due to potential data exposure'); } /** - * SECURE: Reset logging system after emergency shutdown + * Reset logging system after emergency shutdown * Use this function to restore normal logging functionality */ _resetLoggingSystem() { @@ -4210,29 +4120,29 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida this._secureLog('info', 'βœ… Logging system reset successfully'); } /** - * CRITICAL FIX: Enhanced audit function for log message security + * Enhanced audit function for log message security */ _auditLogMessage(message, data) { if (!data || typeof data !== 'object') return true; - // CRITICAL FIX: Convert to string and check for sensitive content + // Convert to string and check for sensitive content const dataString = JSON.stringify(data); - // CRITICAL FIX: Check message itself for sensitive content + // Check message itself for sensitive content if (this._containsSensitiveContent(message)) { this._emergencyDisableLogging(); this._originalConsole?.error?.('🚨 SECURITY BREACH: Sensitive content detected in log message'); return false; } - // CRITICAL FIX: Check data string for sensitive content + // Check data string for sensitive content if (this._containsSensitiveContent(dataString)) { this._emergencyDisableLogging(); this._originalConsole?.error?.('🚨 SECURITY BREACH: Sensitive content detected in log data'); return false; } - // CRITICAL FIX: Enhanced dangerous pattern detection + // Enhanced dangerous pattern detection const dangerousPatterns = [ 'secret', 'token', 'password', 'credential', 'auth', 'fingerprint', 'salt', 'signature', 'private_key', 'api_key', 'private', @@ -4250,7 +4160,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } } - // CRITICAL FIX: Check for high entropy values in data + // Check for high entropy values in data for (const [key, value] of Object.entries(data)) { if (typeof value === 'string' && this._hasHighEntropy(value)) { this._emergencyDisableLogging(); @@ -4271,7 +4181,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida return; } - // CRITICAL FIX: Step-by-step readiness check + // Step-by-step readiness check const channelReady = !!(this.dataChannel && this.dataChannel.readyState === 'open'); if (!channelReady) { this._secureLog('warn', '⚠️ Data channel not open, deferring file transfer initialization'); @@ -4298,7 +4208,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida this.fileTransferSystem = null; } - // CRITICAL FIX: Ensure encryption keys are present + // Ensure encryption keys are present if (!this.encryptionKey || !this.macKey) { this._secureLog('warn', '⚠️ Encryption keys not ready, deferring file transfer initialization'); setTimeout(() => this.initializeFileTransfer(), 1000); @@ -4366,9 +4276,9 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } } - // SECURE: Generate fingerprint mask for anti-fingerprinting with enhanced randomization + // Generate fingerprint mask for anti-fingerprinting with enhanced randomization generateFingerprintMask() { - // SECURE: Enhanced randomization to prevent side-channel attacks + // Enhanced randomization to prevent side-channel attacks const cryptoRandom = crypto.getRandomValues(new Uint8Array(128)); const mask = { @@ -4639,7 +4549,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida ); // Generate random IV for nested encryption - // CRITICAL FIX: No need for base IV or counter - each encryption gets fresh random IV + // No need for base IV or counter - each encryption gets fresh random IV // This ensures maximum entropy and prevents IV reuse attacks } catch (error) { @@ -4654,7 +4564,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida } try { - // CRITICAL FIX: Generate cryptographically secure IV with reuse prevention + // Generate cryptographically secure IV with reuse prevention const uniqueIV = this._generateSecureIV( EnhancedSecureWebRTCManager.SIZES.NESTED_ENCRYPTION_IV_SIZE, 'nestedEncryption' @@ -4685,7 +4595,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida errorMessage: error?.message || 'Unknown error' }); - // CRITICAL FIX: If IV generation failed due to emergency mode, disable nested encryption + // If IV generation failed due to emergency mode, disable nested encryption if (error.message.includes('emergency mode')) { this.securityFeatures.hasNestedEncryption = false; this._secureLog('warn', '⚠️ Nested encryption disabled due to IV emergency mode'); @@ -4700,7 +4610,7 @@ this._secureLog('info', 'πŸ”’ Enhanced Mutex system fully initialized and valida return data; } - // CRITICAL FIX: Check that the data is actually encrypted with proper IV size + // Check that the data is actually encrypted with proper IV size if (!(data instanceof ArrayBuffer) || data.byteLength < EnhancedSecureWebRTCManager.SIZES.NESTED_ENCRYPTION_IV_SIZE + 16) { if (this._debugMode) { this._secureLog('debug', 'πŸ“ Data not encrypted or too short for nested decryption (need IV + minimum encrypted data)'); @@ -5911,7 +5821,7 @@ async processOrderedPackets() { } async sendMessage(data) { - // SECURE: Comprehensive input validation + // Comprehensive input validation const validation = this._validateInputData(data, 'sendMessage'); if (!validation.isValid) { const errorMessage = `Input validation failed: ${validation.errors.join(', ')}`; @@ -5923,15 +5833,15 @@ async processOrderedPackets() { throw new Error(errorMessage); } - // SECURE: Rate limiting check + // Rate limiting check if (!this._checkRateLimit('sendMessage')) { throw new Error('Rate limit exceeded for message sending'); } - // CRITICAL SECURITY: Enforce verification gate + // Enforce verification gate this._enforceVerificationGate('sendMessage'); - // SECURE: Connection validation + // Connection validation if (!this.dataChannel || this.dataChannel.readyState !== 'open') { throw new Error('Data channel not ready'); } @@ -5975,7 +5885,7 @@ async processOrderedPackets() { } } - // SECURE: For regular text messages, send via secure path with AAD + // For regular text messages, send via secure path with AAD if (typeof validation.sanitizedData === 'string') { // Verify that _createMessageAAD method is available if (typeof this._createMessageAAD !== 'function') { @@ -5993,7 +5903,7 @@ async processOrderedPackets() { }); } - // SECURE: For binary data, apply security layers with a limited mutex + // For binary data, apply security layers with a limited mutex this._secureLog('debug', 'πŸ” Applying security layers to non-string data'); const securedData = await this._applySecurityLayersWithLimitedMutex(validation.sanitizedData, false); this.dataChannel.send(securedData); @@ -6052,7 +5962,7 @@ async processOrderedPackets() { } async sendSystemMessage(messageData) { - // CRITICAL SECURITY: Block system messages without verification + // Block system messages without verification // Exception: Allow verification-related system messages const isVerificationMessage = messageData.type === 'verification_request' || messageData.type === 'verification_response' || @@ -6165,7 +6075,7 @@ async processMessage(data) { // Parse decrypted data const decryptedParsed = JSON.parse(decryptedData.data); - // CRITICAL SECURITY: Validate AAD with sequence number + // Validate AAD with sequence number if (decryptedData.metadata && decryptedData.metadata.sequenceNumber !== undefined) { if (!this._validateIncomingSequenceNumber(decryptedData.metadata.sequenceNumber, 'enhanced_message')) { this._secureLog('warn', '⚠️ Enhanced message sequence number validation failed - possible replay attack', { @@ -6375,7 +6285,7 @@ async processMessage(data) { // FIX: Force header refresh with correct manager setTimeout(() => { - // SECURE: Removed global callback - use event system instead + // Removed global callback - use event system instead // if (window.forceHeaderSecurityUpdate) { // window.forceHeaderSecurityUpdate(this); // } @@ -6775,13 +6685,13 @@ async processMessage(data) { // Clean up chunk queue this.chunkQueue = []; - // CRITICAL SECURITY: Wipe ephemeral keys for PFS on disconnect + // Wipe ephemeral keys for PFS on disconnect this._wipeEphemeralKeys(); - // CRITICAL SECURITY: Hard wipe old keys for PFS + // Hard wipe old keys for PFS this._hardWipeOldKeys(); - // CRITICAL SECURITY: Clear verification states + // Clear verification states this._clearVerificationStates(); } catch (error) { @@ -6790,7 +6700,7 @@ async processMessage(data) { } /** - * CRITICAL SECURITY: Clear all verification states and data + * Clear all verification states and data * Called when verification is rejected or connection is terminated */ _clearVerificationStates() { @@ -6826,7 +6736,7 @@ async processMessage(data) { // Start periodic cleanup for rate limiting and security startPeriodicCleanup() { - // SECURE: Cleanup moved to unified scheduler + // Cleanup moved to unified scheduler this._secureLog('info', 'πŸ”§ Periodic cleanup moved to unified scheduler'); } @@ -6894,7 +6804,7 @@ async processMessage(data) { throw new Error('Data channel not ready for key rotation'); } - // CRITICAL SECURITY: Perform hard wipe of old keys for real PFS + // Perform hard wipe of old keys for real PFS this._hardWipeOldKeys(); // Wait for peer confirmation @@ -6925,7 +6835,7 @@ async processMessage(data) { }, 10000); // 10 seconds timeout for the entire operation } - // CRITICAL SECURITY: Real PFS - Clean up old keys with hard wipe + // Real PFS - Clean up old keys with hard wipe cleanupOldKeys() { const now = Date.now(); const maxKeyAge = EnhancedSecureWebRTCManager.LIMITS.MAX_KEY_AGE; // 15 minutes - keys older than this are deleted @@ -6934,7 +6844,7 @@ async processMessage(data) { for (const [version, keySet] of this.oldKeys.entries()) { if (now - keySet.timestamp > maxKeyAge) { - // CRITICAL SECURITY: Hard wipe old keys before deletion + // Hard wipe old keys before deletion if (keySet.encryptionKey) { this._secureWipeMemory(keySet.encryptionKey, 'pfs_cleanup_wipe'); } @@ -7174,7 +7084,7 @@ async processMessage(data) { } } - // CRITICAL SECURITY: Wipe ephemeral keys when session ends for PFS + // Wipe ephemeral keys when session ends for PFS this._wipeEphemeralKeys(); this.stopHeartbeat(); @@ -7442,10 +7352,10 @@ async processMessage(data) { } /** - * CRITICAL FIX: Atomic mutex acquisition with enhanced race condition protection + * Atomic mutex acquisition with enhanced race condition protection */ async _acquireMutex(mutexName, operationId, timeout = 5000) { - // CRITICAL FIX: Build correct mutex property name + // Build correct mutex property name const mutexPropertyName = `_${mutexName}Mutex`; const mutex = this[mutexPropertyName]; @@ -7458,15 +7368,15 @@ async processMessage(data) { throw new Error(`Unknown mutex: ${mutexName}. Available: ${this._getAvailableMutexes().join(', ')}`); } - // CRITICAL FIX: Validate operation ID + // Validate operation ID if (!operationId || typeof operationId !== 'string') { throw new Error('Invalid operation ID for mutex acquisition'); } return new Promise((resolve, reject) => { - // CRITICAL FIX: Atomic lock attempt with immediate state check + // Atomic lock attempt with immediate state check const attemptLock = () => { - // CRITICAL FIX: Check if mutex is already locked by this operation + // Check if mutex is already locked by this operation if (mutex.lockId === operationId) { this._secureLog('warn', `⚠️ Mutex '${mutexName}' already locked by same operation`, { operationId: operationId @@ -7475,9 +7385,9 @@ async processMessage(data) { return; } - // CRITICAL FIX: Atomic check and lock operation + // Atomic check and lock operation if (!mutex.locked) { - // CRITICAL FIX: Set lock state atomically + // Set lock state atomically mutex.locked = true; mutex.lockId = operationId; mutex.lockTime = Date.now(); @@ -7487,22 +7397,22 @@ async processMessage(data) { lockTime: mutex.lockTime }); - // CRITICAL FIX: Set timeout for automatic release with enhanced validation + // Set timeout for automatic release with enhanced validation mutex.lockTimeout = setTimeout(() => { - // CRITICAL FIX: Enhanced timeout handling with state validation + // Enhanced timeout handling with state validation this._handleMutexTimeout(mutexName, operationId, timeout); }, timeout); resolve(); } else { - // CRITICAL FIX: Add to queue with timeout + // Add to queue with timeout const queueItem = { resolve, reject, operationId, timestamp: Date.now(), timeout: setTimeout(() => { - // CRITICAL FIX: Remove from queue on timeout + // Remove from queue on timeout const index = mutex.queue.findIndex(item => item.operationId === operationId); if (index !== -1) { mutex.queue.splice(index, 1); @@ -7521,16 +7431,16 @@ async processMessage(data) { } }; - // CRITICAL FIX: Execute lock attempt immediately + // Execute lock attempt immediately attemptLock(); }); } /** - * CRITICAL FIX: Enhanced mutex release with strict validation and error handling + * Enhanced mutex release with strict validation and error handling */ _releaseMutex(mutexName, operationId) { - // CRITICAL FIX: Validate input parameters + // Validate input parameters if (!mutexName || typeof mutexName !== 'string') { throw new Error('Invalid mutex name provided for release'); } @@ -7539,7 +7449,7 @@ async processMessage(data) { throw new Error('Invalid operation ID provided for mutex release'); } - // CRITICAL FIX: Build correct mutex property name + // Build correct mutex property name const mutexPropertyName = `_${mutexName}Mutex`; const mutex = this[mutexPropertyName]; @@ -7552,7 +7462,7 @@ async processMessage(data) { throw new Error(`Unknown mutex for release: ${mutexName}`); } - // CRITICAL FIX: Strict validation of lock ownership + // Strict validation of lock ownership if (mutex.lockId !== operationId) { this._secureLog('error', `❌ CRITICAL: Invalid mutex release attempt - potential race condition`, { mutexName: mutexName, @@ -7565,11 +7475,11 @@ async processMessage(data) { } }); - // CRITICAL FIX: Throw error instead of silent failure + // Throw error instead of silent failure throw new Error(`Invalid mutex release attempt for '${mutexName}': expected '${mutex.lockId}', got '${operationId}'`); } - // CRITICAL FIX: Validate mutex is actually locked + // Validate mutex is actually locked if (!mutex.locked) { this._secureLog('error', `❌ CRITICAL: Attempting to release unlocked mutex`, { mutexName: mutexName, @@ -7584,16 +7494,16 @@ async processMessage(data) { } try { - // CRITICAL FIX: Clear timeout first + // Clear timeout first if (mutex.lockTimeout) { clearTimeout(mutex.lockTimeout); mutex.lockTimeout = null; } - // CRITICAL FIX: Calculate lock duration for monitoring + // Calculate lock duration for monitoring const lockDuration = mutex.lockTime ? Date.now() - mutex.lockTime : 0; - // CRITICAL FIX: Atomic release with state validation + // Atomic release with state validation mutex.locked = false; mutex.lockId = null; mutex.lockTime = null; @@ -7604,11 +7514,11 @@ async processMessage(data) { queueLength: mutex.queue.length }); - // CRITICAL FIX: Process next in queue with enhanced error handling + // Process next in queue with enhanced error handling this._processNextInQueue(mutexName); } catch (error) { - // CRITICAL FIX: If queue processing fails, ensure mutex is still released + // If queue processing fails, ensure mutex is still released this._secureLog('error', `❌ Error during mutex release queue processing`, { mutexName: mutexName, operationId: operationId, @@ -7616,7 +7526,7 @@ async processMessage(data) { errorMessage: error.message }); - // CRITICAL FIX: Ensure mutex is released even if queue processing fails + // Ensure mutex is released even if queue processing fails mutex.locked = false; mutex.lockId = null; mutex.lockTime = null; @@ -7627,7 +7537,7 @@ async processMessage(data) { } /** - * CRITICAL FIX: Enhanced queue processing with comprehensive error handling + * Enhanced queue processing with comprehensive error handling */ _processNextInQueue(mutexName) { const mutex = this[`_${mutexName}Mutex`]; @@ -7641,7 +7551,7 @@ async processMessage(data) { return; } - // CRITICAL FIX: Validate mutex state before processing queue + // Validate mutex state before processing queue if (mutex.locked) { this._secureLog('warn', `⚠️ Mutex '${mutexName}' is still locked, skipping queue processing`, { lockId: mutex.lockId, @@ -7650,7 +7560,7 @@ async processMessage(data) { return; } - // CRITICAL FIX: Get next item from queue atomically with validation + // Get next item from queue atomically with validation const nextItem = mutex.queue.shift(); if (!nextItem) { @@ -7658,7 +7568,7 @@ async processMessage(data) { return; } - // CRITICAL FIX: Validate queue item structure + // Validate queue item structure if (!nextItem.operationId || !nextItem.resolve || !nextItem.reject) { this._secureLog('error', `❌ Invalid queue item structure for mutex '${mutexName}'`, { hasOperationId: !!nextItem.operationId, @@ -7669,19 +7579,19 @@ async processMessage(data) { } try { - // CRITICAL FIX: Clear timeout for this item + // Clear timeout for this item if (nextItem.timeout) { clearTimeout(nextItem.timeout); } - // CRITICAL FIX: Attempt to acquire lock for next item + // Attempt to acquire lock for next item this._secureLog('debug', `πŸ”„ Processing next operation in queue for mutex '${mutexName}'`, { operationId: nextItem.operationId, queueRemaining: mutex.queue.length, timestamp: Date.now() }); - // CRITICAL FIX: Retry lock acquisition for queued operation with enhanced error handling + // Retry lock acquisition for queued operation with enhanced error handling setTimeout(async () => { try { await this._acquireMutex(mutexName, nextItem.operationId, 5000); @@ -7701,10 +7611,10 @@ async processMessage(data) { timestamp: Date.now() }); - // CRITICAL FIX: Reject with detailed error information + // Reject with detailed error information nextItem.reject(new Error(`Queue processing failed for '${mutexName}': ${error.message}`)); - // CRITICAL FIX: Continue processing queue even if one item fails + // Continue processing queue even if one item fails setTimeout(() => { this._processNextInQueue(mutexName); }, 50); @@ -7718,7 +7628,7 @@ async processMessage(data) { errorMessage: error.message }); - // CRITICAL FIX: Reject the operation and continue processing + // Reject the operation and continue processing try { nextItem.reject(new Error(`Queue processing critical error: ${error.message}`)); } catch (rejectError) { @@ -7728,7 +7638,7 @@ async processMessage(data) { }); } - // CRITICAL FIX: Continue processing remaining queue items + // Continue processing remaining queue items setTimeout(() => { this._processNextInQueue(mutexName); }, 100); @@ -7751,12 +7661,12 @@ async processMessage(data) { } /** - * CRITICAL FIX: Enhanced mutex execution with atomic operations + * Enhanced mutex execution with atomic operations */ async _withMutex(mutexName, operation, timeout = 5000) { const operationId = this._generateOperationId(); - // CRITICAL FIX: Validate mutex system before operation + // Validate mutex system before operation if (!this._validateMutexSystem()) { this._secureLog('error', '❌ Mutex system not properly initialized', { operationId: operationId, @@ -7765,7 +7675,7 @@ async processMessage(data) { throw new Error('Mutex system not properly initialized. Call _initializeMutexSystem() first.'); } - // CRITICAL FIX: Get mutex reference with validation + // Get mutex reference with validation const mutex = this[`_${mutexName}Mutex`]; if (!mutex) { throw new Error(`Mutex '${mutexName}' not found`); @@ -7774,20 +7684,20 @@ async processMessage(data) { let mutexAcquired = false; try { - // CRITICAL FIX: Atomic mutex acquisition with timeout + // Atomic mutex acquisition with timeout await this._acquireMutex(mutexName, operationId, timeout); mutexAcquired = true; - // CRITICAL FIX: Increment operation counter atomically + // Increment operation counter atomically const counterKey = `${mutexName}Operations`; if (this._operationCounters && this._operationCounters[counterKey] !== undefined) { this._operationCounters[counterKey]++; } - // CRITICAL FIX: Execute operation with enhanced error handling + // Execute operation with enhanced error handling const result = await operation(operationId); - // CRITICAL FIX: Validate result before returning + // Validate result before returning if (result === undefined && operation.name !== 'cleanup') { this._secureLog('warn', '⚠️ Mutex operation returned undefined result', { operationId: operationId, @@ -7799,7 +7709,7 @@ async processMessage(data) { return result; } catch (error) { - // CRITICAL FIX: Enhanced error logging with context + // Enhanced error logging with context this._secureLog('error', '❌ Error in mutex operation', { operationId: operationId, mutexName: mutexName, @@ -7813,24 +7723,24 @@ async processMessage(data) { } : 'null' }); - // CRITICAL FIX: If this is a key operation error, trigger emergency recovery + // If this is a key operation error, trigger emergency recovery if (mutexName === 'keyOperation') { this._handleKeyOperationError(error, operationId); } - // CRITICAL FIX: Trigger emergency unlock for critical mutex errors + // Trigger emergency unlock for critical mutex errors if (error.message.includes('timeout') || error.message.includes('race condition')) { this._emergencyUnlockAllMutexes('errorHandler'); } throw error; } finally { - // CRITICAL FIX: Always release mutex in finally block with validation + // Always release mutex in finally block with validation if (mutexAcquired) { try { await this._releaseMutex(mutexName, operationId); - // CRITICAL FIX: Verify mutex was properly released + // Verify mutex was properly released if (mutex.locked && mutex.lockId === operationId) { this._secureLog('error', '❌ Mutex release verification failed', { operationId: operationId, @@ -7850,7 +7760,7 @@ async processMessage(data) { releaseErrorMessage: releaseError.message }); - // CRITICAL FIX: Force release on error + // Force release on error mutex.locked = false; mutex.lockId = null; mutex.lockTimeout = null; @@ -7888,19 +7798,19 @@ async processMessage(data) { } /** - * CRITICAL FIX: Enhanced emergency recovery of the mutex system + * Enhanced emergency recovery of the mutex system */ _emergencyRecoverMutexSystem() { this._secureLog('warn', '🚨 Emergency mutex system recovery initiated'); try { - // CRITICAL FIX: Emergency unlock all mutexes first + // Emergency unlock all mutexes first this._emergencyUnlockAllMutexes('emergencyRecovery'); - // CRITICAL FIX: Force re-initialize the system + // Force re-initialize the system this._initializeMutexSystem(); - // CRITICAL FIX: Validate recovery success + // Validate recovery success if (!this._validateMutexSystem()) { throw new Error('Mutex system validation failed after recovery'); } @@ -7914,7 +7824,7 @@ async processMessage(data) { errorMessage: error.message }); - // CRITICAL FIX: Last resort - force re-initialization + // Last resort - force re-initialization try { this._initializeMutexSystem(); this._secureLog('warn', '⚠️ Forced mutex system re-initialization completed'); @@ -7930,7 +7840,7 @@ async processMessage(data) { } /** - * CRITICAL FIX: Atomic key generation with race condition protection + * Atomic key generation with race condition protection */ async _generateEncryptionKeys() { return this._withMutex('keyOperation', async (operationId) => { @@ -7938,10 +7848,10 @@ async processMessage(data) { operationId: operationId }); - // CRITICAL FIX: Atomic state check and update using mutex lock + // Atomic state check and update using mutex lock const currentState = this._keySystemState; - // CRITICAL FIX: Atomic check - if already initializing, wait or fail + // Atomic check - if already initializing, wait or fail if (currentState.isInitializing) { this._secureLog('warn', '⚠️ Key generation already in progress, waiting for completion', { operationId: operationId, @@ -7963,9 +7873,9 @@ async processMessage(data) { } } - // CRITICAL FIX: Atomic state update within mutex protection + // Atomic state update within mutex protection try { - // CRITICAL FIX: Set state atomically within mutex + // Set state atomically within mutex currentState.isInitializing = true; currentState.lastOperation = 'generation'; currentState.lastOperationTime = Date.now(); @@ -7976,20 +7886,20 @@ async processMessage(data) { timestamp: currentState.lastOperationTime }); - // CRITICAL FIX: Generate keys with individual error handling + // Generate keys with individual error handling let ecdhKeyPair = null; let ecdsaKeyPair = null; - // CRITICAL SECURITY: Generate ephemeral ECDH keys for PFS + // Generate ephemeral ECDH keys for PFS try { ecdhKeyPair = await this._generateEphemeralECDHKeys(); - // CRITICAL FIX: Validate ECDH keys immediately + // Validate ECDH keys immediately if (!ecdhKeyPair || !ecdhKeyPair.privateKey || !ecdhKeyPair.publicKey) { throw new Error('Ephemeral ECDH key pair validation failed'); } - // SECURE: Constant-time validation for key types + // Constant-time validation for key types if (!this._validateKeyPairConstantTime(ecdhKeyPair)) { throw new Error('Ephemeral ECDH keys are not valid CryptoKey instances'); } @@ -8013,12 +7923,12 @@ async processMessage(data) { try { ecdsaKeyPair = await window.EnhancedSecureCryptoUtils.generateECDSAKeyPair(); - // CRITICAL FIX: Validate ECDSA keys immediately + // Validate ECDSA keys immediately if (!ecdsaKeyPair || !ecdsaKeyPair.privateKey || !ecdsaKeyPair.publicKey) { throw new Error('ECDSA key pair validation failed'); } - // SECURE: Constant-time validation for key types + // Constant-time validation for key types if (!this._validateKeyPairConstantTime(ecdsaKeyPair)) { throw new Error('ECDSA keys are not valid CryptoKey instances'); } @@ -8037,12 +7947,12 @@ async processMessage(data) { this._throwSecureError(ecdsaError, 'ecdsa_key_generation'); } - // CRITICAL FIX: Final validation of both key pairs + // Final validation of both key pairs if (!ecdhKeyPair || !ecdsaKeyPair) { throw new Error('One or both key pairs failed to generate'); } - // SECURE: Enable security features after successful key generation + // Enable security features after successful key generation this._enableSecurityFeaturesAfterKeyGeneration(ecdhKeyPair, ecdsaKeyPair); this._secureLog('info', 'βœ… Encryption keys generated successfully with atomic protection', { @@ -8055,14 +7965,14 @@ async processMessage(data) { return { ecdhKeyPair, ecdsaKeyPair }; } catch (error) { - // CRITICAL FIX: Ensure state is reset on any error + // Ensure state is reset on any error this._secureLog('error', '❌ Key generation failed, resetting state', { operationId: operationId, errorType: error.constructor.name }); throw error; } finally { - // CRITICAL FIX: Always reset state in finally block + // Always reset state in finally block currentState.isInitializing = false; currentState.operationId = null; @@ -8074,11 +7984,11 @@ async processMessage(data) { } /** - * SECURE: Enable security features after successful key generation + * Enable security features after successful key generation */ _enableSecurityFeaturesAfterKeyGeneration(ecdhKeyPair, ecdsaKeyPair) { try { - // SECURE: Enable encryption features based on available keys + // Enable encryption features based on available keys if (ecdhKeyPair && ecdhKeyPair.privateKey && ecdhKeyPair.publicKey) { this.securityFeatures.hasEncryption = true; this.securityFeatures.hasECDH = true; @@ -8090,7 +8000,7 @@ async processMessage(data) { this._secureLog('info', 'πŸ”’ ECDSA signature features enabled'); } - // SECURE: Enable additional features that depend on encryption + // Enable additional features that depend on encryption if (this.securityFeatures.hasEncryption) { this.securityFeatures.hasMetadataProtection = true; this.securityFeatures.hasEnhancedReplayProtection = true; @@ -8098,7 +8008,7 @@ async processMessage(data) { this._secureLog('info', 'πŸ”’ Additional encryption-dependent features enabled'); } - // CRITICAL SECURITY: Enable PFS after ephemeral key generation + // Enable PFS after ephemeral key generation if (ecdhKeyPair && this.ephemeralKeyPairs.size > 0) { this.securityFeatures.hasPFS = true; this._secureLog('info', 'πŸ”’ Perfect Forward Secrecy enabled with ephemeral keys'); @@ -8123,10 +8033,10 @@ async processMessage(data) { } /** - * CRITICAL FIX: Enhanced emergency mutex unlocking with authorization and validation + * Enhanced emergency mutex unlocking with authorization and validation */ _emergencyUnlockAllMutexes(callerContext = 'unknown') { - // CRITICAL FIX: Validate caller authorization + // Validate caller authorization const authorizedCallers = [ 'keyOperation', 'cryptoOperation', 'connectionOperation', 'emergencyRecovery', 'systemShutdown', 'errorHandler' @@ -8155,12 +8065,12 @@ async processMessage(data) { const mutex = this[`_${mutexName}Mutex`]; if (mutex) { try { - // CRITICAL FIX: Clear timeout first + // Clear timeout first if (mutex.lockTimeout) { clearTimeout(mutex.lockTimeout); } - // CRITICAL FIX: Log mutex state before emergency unlock + // Log mutex state before emergency unlock const previousState = { locked: mutex.locked, lockId: mutex.lockId, @@ -8168,13 +8078,13 @@ async processMessage(data) { queueLength: mutex.queue.length }; - // CRITICAL FIX: Reset mutex state atomically + // Reset mutex state atomically mutex.locked = false; mutex.lockId = null; mutex.lockTimeout = null; mutex.lockTime = null; - // CRITICAL FIX: Clear queue with proper error handling and logging + // Clear queue with proper error handling and logging let queueRejectCount = 0; mutex.queue.forEach(item => { try { @@ -8190,7 +8100,7 @@ async processMessage(data) { } }); - // CRITICAL FIX: Clear queue array + // Clear queue array mutex.queue = []; unlockedCount++; @@ -8212,7 +8122,7 @@ async processMessage(data) { } }); - // CRITICAL FIX: Reset key system state with validation + // Reset key system state with validation if (this._keySystemState) { try { const previousKeyState = { ...this._keySystemState }; @@ -8237,7 +8147,7 @@ async processMessage(data) { } } - // CRITICAL FIX: Log emergency unlock summary + // Log emergency unlock summary this._secureLog('info', `🚨 Emergency mutex unlock completed`, { callerContext: callerContext, unlockedCount: unlockedCount, @@ -8246,14 +8156,14 @@ async processMessage(data) { timestamp: Date.now() }); - // CRITICAL FIX: Trigger system validation after emergency unlock + // Trigger system validation after emergency unlock setTimeout(() => { this._validateMutexSystemAfterEmergencyUnlock(); }, 100); } /** - * CRITICAL FIX: Handle key operation errors with recovery mechanisms + * Handle key operation errors with recovery mechanisms */ _handleKeyOperationError(error, operationId) { this._secureLog('error', '🚨 Key operation error detected, initiating recovery', { @@ -8262,7 +8172,7 @@ async processMessage(data) { errorMessage: error.message }); - // CRITICAL FIX: Reset key system state immediately + // Reset key system state immediately if (this._keySystemState) { this._keySystemState.isInitializing = false; this._keySystemState.isRotating = false; @@ -8270,14 +8180,14 @@ async processMessage(data) { this._keySystemState.operationId = null; } - // CRITICAL FIX: Clear any partial key data + // Clear any partial key data this.ecdhKeyPair = null; this.ecdsaKeyPair = null; this.encryptionKey = null; this.macKey = null; this.metadataKey = null; - // CRITICAL FIX: Trigger emergency recovery if needed + // Trigger emergency recovery if needed if (error.message.includes('timeout') || error.message.includes('race condition')) { this._secureLog('warn', '⚠️ Race condition or timeout detected, triggering emergency recovery'); this._emergencyRecoverMutexSystem(); @@ -8285,10 +8195,10 @@ async processMessage(data) { } /** - * CRITICAL FIX: Generate cryptographically secure IV with reuse prevention + * Generate cryptographically secure IV with reuse prevention */ _generateSecureIV(ivSize = 12, context = 'general') { - // CRITICAL FIX: Check if we're in emergency mode + // Check if we're in emergency mode if (this._ivTrackingSystem.emergencyMode) { this._secureLog('error', '🚨 CRITICAL: IV generation blocked - emergency mode active due to IV reuse'); throw new Error('IV generation blocked - emergency mode active'); @@ -8300,13 +8210,13 @@ async processMessage(data) { while (attempts < maxAttempts) { attempts++; - // CRITICAL FIX: Generate fresh IV with crypto.getRandomValues + // Generate fresh IV with crypto.getRandomValues const iv = crypto.getRandomValues(new Uint8Array(ivSize)); - // CRITICAL FIX: Convert IV to string for tracking + // Convert IV to string for tracking const ivString = Array.from(iv).map(b => b.toString(16).padStart(2, '0')).join(''); - // CRITICAL FIX: Check for IV reuse + // Check for IV reuse if (this._ivTrackingSystem.usedIVs.has(ivString)) { this._ivTrackingSystem.collisionCount++; this._secureLog('error', `🚨 CRITICAL: IV reuse detected!`, { @@ -8316,7 +8226,7 @@ async processMessage(data) { ivString: ivString.substring(0, 16) + '...' // Log partial IV for debugging }); - // CRITICAL FIX: If too many collisions, trigger emergency mode + // If too many collisions, trigger emergency mode if (this._ivTrackingSystem.collisionCount > 5) { this._ivTrackingSystem.emergencyMode = true; this._secureLog('error', '🚨 CRITICAL: Emergency mode activated due to excessive IV reuse'); @@ -8326,7 +8236,7 @@ async processMessage(data) { continue; // Try again } - // CRITICAL FIX: Validate IV entropy + // Validate IV entropy if (!this._validateIVEntropy(iv)) { this._ivTrackingSystem.entropyValidation.entropyFailures++; this._secureLog('warn', `⚠️ Low entropy IV detected`, { @@ -8335,7 +8245,7 @@ async processMessage(data) { entropyFailures: this._ivTrackingSystem.entropyValidation.entropyFailures }); - // CRITICAL FIX: If too many entropy failures, trigger emergency mode + // If too many entropy failures, trigger emergency mode if (this._ivTrackingSystem.entropyValidation.entropyFailures > 10) { this._ivTrackingSystem.emergencyMode = true; this._secureLog('error', '🚨 CRITICAL: Emergency mode activated due to low entropy IVs'); @@ -8345,7 +8255,7 @@ async processMessage(data) { continue; // Try again } - // CRITICAL FIX: Track IV usage + // Track IV usage this._ivTrackingSystem.usedIVs.add(ivString); this._ivTrackingSystem.ivHistory.set(ivString, { timestamp: Date.now(), @@ -8353,7 +8263,7 @@ async processMessage(data) { attempt: attempts }); - // CRITICAL FIX: Track per-session IVs + // Track per-session IVs if (this.sessionId) { if (!this._ivTrackingSystem.sessionIVs.has(this.sessionId)) { this._ivTrackingSystem.sessionIVs.set(this.sessionId, new Set()); @@ -8361,7 +8271,7 @@ async processMessage(data) { this._ivTrackingSystem.sessionIVs.get(this.sessionId).add(ivString); } - // CRITICAL FIX: Validate RNG periodically + // Validate RNG periodically this._validateRNGQuality(); this._secureLog('debug', `βœ… Secure IV generated`, { @@ -8374,7 +8284,7 @@ async processMessage(data) { return iv; } - // CRITICAL FIX: If we can't generate a unique IV after max attempts + // If we can't generate a unique IV after max attempts this._secureLog('error', `❌ Failed to generate unique IV after ${maxAttempts} attempts`, { context: context, totalIVs: this._ivTrackingSystem.usedIVs.size @@ -8383,18 +8293,18 @@ async processMessage(data) { } /** - * CRITICAL FIX: Validate IV entropy to detect weak RNG + * Validate IV entropy to detect weak RNG */ _validateIVEntropy(iv) { this._ivTrackingSystem.entropyValidation.entropyTests++; - // CRITICAL FIX: Calculate byte distribution + // Calculate byte distribution const byteCounts = new Array(256).fill(0); for (let i = 0; i < iv.length; i++) { byteCounts[iv[i]]++; } - // SECURE: Multi-dimensional entropy analysis + // Multi-dimensional entropy analysis const entropyResults = { shannon: 0, min: 0, @@ -8438,10 +8348,10 @@ async processMessage(data) { // 5. Quantum-resistant entropy analysis entropyResults.quantum = this._calculateQuantumResistantEntropy(iv); - // SECURE: Enhanced suspicious pattern detection + // Enhanced suspicious pattern detection const hasSuspiciousPatterns = this._detectAdvancedSuspiciousPatterns(iv); - // SECURE: Multi-criteria validation + // Multi-criteria validation const minEntropyThreshold = this._ivTrackingSystem.entropyValidation.minEntropy; const isValid = ( entropyResults.shannon >= minEntropyThreshold && @@ -8468,7 +8378,7 @@ async processMessage(data) { } /** - * SECURE: Estimate compressed length for entropy calculation + * Estimate compressed length for entropy calculation * @param {string} data - Data to estimate compression * @returns {number} Estimated compressed length */ @@ -8506,7 +8416,7 @@ async processMessage(data) { } /** - * SECURE: Calculate quantum-resistant entropy + * Calculate quantum-resistant entropy * @param {Uint8Array} data - Data to analyze * @returns {number} Quantum-resistant entropy score */ @@ -8533,7 +8443,7 @@ async processMessage(data) { } /** - * SECURE: Detect quantum-vulnerable patterns + * Detect quantum-vulnerable patterns * @param {Uint8Array} data - Data to analyze * @returns {boolean} true if quantum-vulnerable patterns found */ @@ -8563,7 +8473,7 @@ async processMessage(data) { } /** - * SECURE: Analyze bit distribution + * Analyze bit distribution * @param {Uint8Array} data - Data to analyze * @returns {Object} Bit distribution analysis */ @@ -8586,7 +8496,7 @@ async processMessage(data) { } /** - * SECURE: Detect periodicity in data + * Detect periodicity in data * @param {Uint8Array} data - Data to analyze * @returns {number} Periodicity score (0-1) */ @@ -8617,7 +8527,7 @@ async processMessage(data) { } /** - * SECURE: Enhanced suspicious pattern detection + * Enhanced suspicious pattern detection * @param {Uint8Array} iv - IV to check * @returns {boolean} true if suspicious patterns found */ @@ -8658,7 +8568,7 @@ async processMessage(data) { } /** - * SECURE: Calculate local entropy for pattern detection + * Calculate local entropy for pattern detection * @param {Uint8Array} data - Data to analyze * @returns {Array} Array of local entropy values */ @@ -8687,10 +8597,10 @@ async processMessage(data) { } /** - * CRITICAL FIX: Detect suspicious patterns in IVs + * Detect suspicious patterns in IVs */ _detectSuspiciousIVPatterns(iv) { - // CRITICAL FIX: Check for all zeros or all ones + // Check for all zeros or all ones const allZeros = iv.every(byte => byte === 0); const allOnes = iv.every(byte => byte === 255); @@ -8698,7 +8608,7 @@ async processMessage(data) { return true; } - // CRITICAL FIX: Check for sequential patterns + // Check for sequential patterns let sequentialCount = 0; for (let i = 1; i < iv.length; i++) { if (iv[i] === iv[i-1] + 1 || iv[i] === iv[i-1] - 1) { @@ -8712,7 +8622,7 @@ async processMessage(data) { } } - // CRITICAL FIX: Check for repeated patterns + // Check for repeated patterns for (let patternLength = 2; patternLength <= Math.floor(iv.length / 2); patternLength++) { for (let start = 0; start <= iv.length - patternLength * 2; start++) { const pattern1 = iv.slice(start, start + patternLength); @@ -8728,7 +8638,7 @@ async processMessage(data) { } /** - * SECURE: Clean up old IVs with strict limits + * Clean up old IVs with strict limits */ _cleanupOldIVs() { const now = Date.now(); @@ -8736,7 +8646,7 @@ async processMessage(data) { let cleanedCount = 0; const cleanupBatch = []; - // SECURE: Aggressive cleanup with quantum-resistant patterns + // Aggressive cleanup with quantum-resistant patterns // Enforce maximum IV history size with batch processing if (this._ivTrackingSystem.ivHistory.size > this._ivTrackingSystem.maxIVHistorySize) { const ivArray = Array.from(this._ivTrackingSystem.ivHistory.entries()); @@ -8754,7 +8664,7 @@ async processMessage(data) { } } - // SECURE: Clean up old IVs from history by age with enhanced security + // Clean up old IVs from history by age with enhanced security for (const [ivString, metadata] of this._ivTrackingSystem.ivHistory.entries()) { if (now - metadata.timestamp > maxAge) { cleanupBatch.push(ivString); @@ -8773,7 +8683,7 @@ async processMessage(data) { this._processCleanupBatch(cleanupBatch); } - // SECURE: Enhanced session IV cleanup with entropy preservation + // Enhanced session IV cleanup with entropy preservation for (const [sessionId, sessionIVs] of this._ivTrackingSystem.sessionIVs.entries()) { if (sessionIVs.size > this._ivTrackingSystem.maxSessionIVs) { const ivArray = Array.from(sessionIVs); @@ -8788,7 +8698,7 @@ async processMessage(data) { } } - // SECURE: Force garbage collection if available and significant cleanup occurred + // Force garbage collection if available and significant cleanup occurred if (typeof window.gc === 'function' && cleanedCount > 50) { try { window.gc(); @@ -8808,11 +8718,11 @@ async processMessage(data) { } /** - * SECURE: Process cleanup batch with constant-time operations + * Process cleanup batch with constant-time operations * @param {Array} batch - Batch of items to clean up */ _processCleanupBatch(batch) { - // SECURE: Constant-time batch processing + // Constant-time batch processing for (const item of batch) { this._ivTrackingSystem.usedIVs.delete(item); this._ivTrackingSystem.ivHistory.delete(item); @@ -8820,7 +8730,7 @@ async processMessage(data) { } /** - * SECURE: Calculate memory pressure for adaptive cleanup + * Calculate memory pressure for adaptive cleanup * @returns {number} Memory pressure score (0-100) */ _calculateMemoryPressure() { @@ -8831,7 +8741,7 @@ async processMessage(data) { } /** - * CRITICAL FIX: Get IV tracking system statistics + * Get IV tracking system statistics */ _getIVTrackingStats() { return { @@ -8848,7 +8758,7 @@ async processMessage(data) { } /** - * CRITICAL FIX: Reset IV tracking system (for testing or emergency recovery) + * Reset IV tracking system (for testing or emergency recovery) */ _resetIVTrackingSystem() { this._secureLog('warn', 'πŸ”„ Resetting IV tracking system'); @@ -8867,21 +8777,21 @@ async processMessage(data) { } /** - * CRITICAL FIX: Validate RNG quality + * Validate RNG quality */ _validateRNGQuality() { const now = Date.now(); - // CRITICAL FIX: Validate RNG every 1000 IV generations + // Validate RNG every 1000 IV generations if (this._ivTrackingSystem.rngValidation.testsPerformed % 1000 === 0) { try { - // CRITICAL FIX: Generate test IVs and validate + // Generate test IVs and validate const testIVs = []; for (let i = 0; i < 100; i++) { testIVs.push(crypto.getRandomValues(new Uint8Array(12))); } - // CRITICAL FIX: Check for duplicates in test set + // Check for duplicates in test set const testIVStrings = testIVs.map(iv => Array.from(iv).map(b => b.toString(16).padStart(2, '0')).join('')); const uniqueTestIVs = new Set(testIVStrings); @@ -8906,7 +8816,7 @@ async processMessage(data) { } /** - * CRITICAL FIX: Handle mutex timeout with enhanced state validation + * Handle mutex timeout with enhanced state validation */ _handleMutexTimeout(mutexName, operationId, timeout) { const mutex = this[`_${mutexName}Mutex`]; @@ -8916,7 +8826,7 @@ async processMessage(data) { return; } - // CRITICAL FIX: Validate timeout conditions + // Validate timeout conditions if (mutex.lockId !== operationId) { this._secureLog('warn', `⚠️ Timeout for different operation ID on mutex '${mutexName}'`, { expectedOperationId: operationId, @@ -8934,7 +8844,7 @@ async processMessage(data) { } try { - // CRITICAL FIX: Calculate lock duration for monitoring + // Calculate lock duration for monitoring const lockDuration = mutex.lockTime ? Date.now() - mutex.lockTime : 0; this._secureLog('warn', `⚠️ Mutex '${mutexName}' auto-released due to timeout`, { @@ -8944,13 +8854,13 @@ async processMessage(data) { queueLength: mutex.queue.length }); - // CRITICAL FIX: Atomic release with state validation + // Atomic release with state validation mutex.locked = false; mutex.lockId = null; mutex.lockTimeout = null; mutex.lockTime = null; - // CRITICAL FIX: Process next in queue with error handling + // Process next in queue with error handling setTimeout(() => { try { this._processNextInQueue(mutexName); @@ -8969,7 +8879,7 @@ async processMessage(data) { errorMessage: error.message }); - // CRITICAL FIX: Force emergency unlock if timeout handling fails + // Force emergency unlock if timeout handling fails try { this._emergencyUnlockAllMutexes('timeoutHandler'); } catch (emergencyError) { @@ -8982,7 +8892,7 @@ async processMessage(data) { } /** - * CRITICAL FIX: Validate mutex system after emergency unlock + * Validate mutex system after emergency unlock */ _validateMutexSystemAfterEmergencyUnlock() { const mutexes = ['keyOperation', 'cryptoOperation', 'connectionOperation']; @@ -8999,7 +8909,7 @@ async processMessage(data) { return; } - // CRITICAL FIX: Validate mutex state consistency + // Validate mutex state consistency if (mutex.locked) { validationErrors++; this._secureLog('error', `❌ Mutex '${mutexName}' still locked after emergency unlock`, { @@ -9028,7 +8938,7 @@ async processMessage(data) { } }); - // CRITICAL FIX: Validate key system state + // Validate key system state if (this._keySystemState) { if (this._keySystemState.isInitializing || this._keySystemState.isRotating || @@ -9049,7 +8959,7 @@ async processMessage(data) { validationErrors: validationErrors }); - // CRITICAL FIX: Force re-initialization if validation fails + // Force re-initialization if validation fails setTimeout(() => { this._emergencyRecoverMutexSystem(); }, 1000); @@ -9286,7 +9196,7 @@ async processMessage(data) { await this.peerConnection.setLocalDescription(offer); console.log('🎯 Local description set successfully'); - // CRITICAL SECURITY: Extract and store our DTLS fingerprint for out-of-band verification + // Extract and store our DTLS fingerprint for out-of-band verification console.log('🎯 Extracting DTLS fingerprint...'); try { const ourFingerprint = this._extractDTLSFingerprintFromSDP(offer.sdp); @@ -9318,15 +9228,7 @@ async processMessage(data) { // PHASE 8: GENERATE SAS FOR OUT-OF-BAND VERIFICATION // ============================================ console.log('🎯 PHASE 8: Generate SAS for out-of-band verification'); - // - // CRITICAL SECURITY: This is the ONLY way to prevent MITM attacks - // - Self-signed ECDSA keys don't provide authentication - // - MITM can substitute both keys and "self-sign" them - // - SAS must be compared out-of-band (voice, video, in-person) - // - Both parties must verify the same code before allowing traffic - // - // NOTE: SAS code will be generated after answer is received and keys are exchanged - // For now, just generate a placeholder that will be replaced with real SAS + this.verificationCode = window.EnhancedSecureCryptoUtils.generateVerificationCode(); console.log('🎯 Placeholder verification code generated:', this.verificationCode); @@ -9537,30 +9439,30 @@ async processMessage(data) { } /** - * CRITICAL FIX: Secure cleanup state after failed offer creation + * Secure cleanup state after failed offer creation */ _cleanupFailedOfferCreation() { try { - // CRITICAL FIX: Secure wipe of cryptographic materials + // Secure wipe of cryptographic materials this._secureCleanupCryptographicMaterials(); - // CRITICAL FIX: Close peer connection if it was created + // Close peer connection if it was created if (this.peerConnection) { this.peerConnection.close(); this.peerConnection = null; } - // CRITICAL FIX: Clear data channel + // Clear data channel if (this.dataChannel) { this.dataChannel.close(); this.dataChannel = null; } - // CRITICAL FIX: Reset flags + // Reset flags this.isInitiator = false; this.isVerified = false; - // CRITICAL FIX: Reset security features to baseline + // Reset security features to baseline this._updateSecurityFeatures({ hasEncryption: false, hasECDH: false, @@ -9573,7 +9475,7 @@ async processMessage(data) { hasPFS: false }); - // CRITICAL FIX: Force garbage collection + // Force garbage collection this._forceGarbageCollection(); this._secureLog('debug', 'πŸ”’ Failed offer creation cleanup completed with secure memory wipe'); @@ -9763,19 +9665,6 @@ async processMessage(data) { this._throwSecureError(error, 'ecdsa_key_import'); } - // SECURITY: Self-signature verification removed - was security theater - // - // PROBLEM: Self-signed ECDSA keys don't provide authentication - // MITM can substitute both keys and "self-sign" them - // - // REAL SECURITY: Use out-of-band verification instead: - // - SAS (Short Authentication String) comparison - // - QR code fingerprint verification - // - Pre-shared public key fingerprints - // - Certificate transparency validation - // - // Note: ECDSA signature only proves packet integrity, not identity - // ============================================ // PHASE 6: IMPORT AND VERIFY ECDH KEY // ============================================ @@ -9934,7 +9823,7 @@ async processMessage(data) { // Create peer connection first this.createPeerConnection(); - // CRITICAL SECURITY: Validate DTLS fingerprint before setting remote description + // Validate DTLS fingerprint before setting remote description if (this.strictDTLSValidation) { try { const receivedFingerprint = this._extractDTLSFingerprintFromSDP(offerData.sdp); @@ -10014,7 +9903,7 @@ async processMessage(data) { this._throwSecureError(error, 'webrtc_local_description'); } - // CRITICAL SECURITY: Extract and store our DTLS fingerprint for out-of-band verification + // Extract and store our DTLS fingerprint for out-of-band verification try { const ourFingerprint = this._extractDTLSFingerprintFromSDP(answer.sdp); this.expectedDTLSFingerprint = ourFingerprint; @@ -10031,8 +9920,6 @@ async processMessage(data) { // Continue without fingerprint validation (fallback mode) } - // NOTE: SAS code will be received from Offer side after connection is established - // No need to generate SAS code on Answer side // Await ICE gathering await this.waitForIceGathering(); @@ -10060,11 +9947,6 @@ async processMessage(data) { 'ECDSA' ); - // CRITICAL: Strict validation of exported data with hard disconnect on failure - // - Any validation failure in critical security path must abort connection - // - No fallback allowed for cryptographic validation - // - Prevent bypass of security checks through syntax/validation errors - if (!ecdhPublicKeyData || typeof ecdhPublicKeyData !== 'object') { this._secureLog('error', 'CRITICAL: ECDH key export failed - invalid object structure', { operationId }); throw new Error('CRITICAL SECURITY FAILURE: ECDH key export validation failed - hard abort required'); @@ -10297,40 +10179,40 @@ async processMessage(data) { * HELPER: Cleanup state after failed answer creation */ /** - * CRITICAL FIX: Secure cleanup state after failed answer creation + * Secure cleanup state after failed answer creation */ _cleanupFailedAnswerCreation() { try { - // CRITICAL FIX: Secure wipe of cryptographic materials + // Secure wipe of cryptographic materials this._secureCleanupCryptographicMaterials(); - // CRITICAL FIX: Secure wipe of PFS key versions + // Secure wipe of PFS key versions this.currentKeyVersion = 0; this.keyVersions.clear(); this.oldKeys.clear(); - // CRITICAL FIX: Close peer connection if created + // Close peer connection if created if (this.peerConnection) { this.peerConnection.close(); this.peerConnection = null; } - // CRITICAL FIX: Clear data channel + // Clear data channel if (this.dataChannel) { this.dataChannel.close(); this.dataChannel = null; } - // CRITICAL FIX: Reset flags and counters + // Reset flags and counters this.isInitiator = false; this.isVerified = false; this.sequenceNumber = 0; this.expectedSequenceNumber = 0; this.messageCounter = 0; this.processedMessageIds.clear(); - this.replayWindow.clear(); // CRITICAL SECURITY: Clear replay window + this.replayWindow.clear(); // Clear replay window - // CRITICAL FIX: Reset security features to baseline + // Reset security features to baseline this._updateSecurityFeatures({ hasEncryption: false, hasECDH: false, @@ -10343,7 +10225,7 @@ async processMessage(data) { hasPFS: false }); - // CRITICAL FIX: Force garbage collection + // Force garbage collection this._forceGarbageCollection(); this._secureLog('debug', 'πŸ”’ Failed answer creation cleanup completed with secure memory wipe'); @@ -10395,7 +10277,7 @@ async processMessage(data) { this.expectedSequenceNumber = 0; this.messageCounter = 0; this.processedMessageIds.clear(); - this.replayWindow.clear(); // CRITICAL SECURITY: Clear replay window + this.replayWindow.clear(); // Clear replay window this._secureLog('info', 'βœ… Encryption keys set successfully', { operationId: operationId, @@ -10425,9 +10307,6 @@ async processMessage(data) { async handleSecureAnswer(answerData) { console.log('🎯 handleSecureAnswer called with answerData:', answerData ? 'present' : 'null'); try { - // CRITICAL: Strict validation of answer data to prevent syntax errors - // - Any validation failure in critical security path must abort connection - // - No fallback allowed for cryptographic validation if (!answerData || typeof answerData !== 'object' || Array.isArray(answerData)) { this._secureLog('error', 'CRITICAL: Invalid answer data structure', { @@ -10532,18 +10411,6 @@ async processMessage(data) { ['verify'] ); - // SECURITY: Self-signature verification removed - was security theater - // - // PROBLEM: Self-signed ECDSA keys don't provide authentication - // MITM can substitute both keys and "self-sign" them - // - // REAL SECURITY: Use out-of-band verification instead: - // - SAS (Short Authentication String) comparison - // - QR code fingerprint verification - // - Pre-shared public key fingerprints - // - Certificate transparency validation - // - // Note: ECDSA signature only proves packet integrity, not identity // Now import and verify the ECDH public key using the verified ECDSA key const peerPublicKey = await window.EnhancedSecureCryptoUtils.importPublicKeyFromSignedPackage( @@ -10592,16 +10459,6 @@ async processMessage(data) { .map(b => b.toString(16).padStart(2, '0')).join(''); } - // SECURITY: DTLS protection removed - was security theater - // - // REAL SECURITY: Implement proper key verification instead: - // - Out-of-band fingerprint verification (SAS/QR codes) - // - SDP certificate fingerprint validation - // - Public key pinning if known in advance - // - Certificate transparency validation - // - // Note: Browser WebRTC handles DTLS automatically - // JavaScript cannot access DTLS layer for validation const derivedKeys = await window.EnhancedSecureCryptoUtils.deriveSharedKeys( this.ecdhKeyPair.privateKey, @@ -10617,7 +10474,7 @@ async processMessage(data) { this.expectedSequenceNumber = 0; this.messageCounter = 0; this.processedMessageIds.clear(); - this.replayWindow.clear(); // CRITICAL SECURITY: Clear replay window + this.replayWindow.clear(); // Clear replay window // Validate that all keys are properly set if (!(this.encryptionKey instanceof CryptoKey) || !(this.macKey instanceof CryptoKey) || @@ -10659,7 +10516,7 @@ async processMessage(data) { this.onKeyExchange(this.keyFingerprint); - // CRITICAL SECURITY: Compute SAS for MITM protection (Offer side - Answer handler) + // Compute SAS for MITM protection (Offer side - Answer handler) try { console.log('Starting SAS computation for Offer side (Answer handler)'); const remoteFP = this._extractDTLSFingerprintFromSDP(answerData.sdp); // ΡƒΠΆΠ΅ Π΅ΡΡ‚ΡŒ Π² ΠΊΠΎΠ΄Π΅ @@ -10693,10 +10550,9 @@ async processMessage(data) { stack: sasError.stack, timestamp: Date.now() }); - // НС ΠΏΡ€Π΅Ρ€Ρ‹Π²Π°Π΅ΠΌ соСдинСниС ΠΈΠ·-Π·Π° ошибки SAS, Π½ΠΎ Π»ΠΎΠ³ΠΈΡ€ΡƒΠ΅ΠΌ } - // CRITICAL SECURITY: Validate DTLS fingerprint before setting remote description + // Validate DTLS fingerprint before setting remote description if (this.strictDTLSValidation) { try { const receivedFingerprint = this._extractDTLSFingerprintFromSDP(answerData.sdp); @@ -10716,8 +10572,7 @@ async processMessage(data) { error: error.message, context: 'answer_validation' }); - // Continue without strict fingerprint validation for first connection - // This allows the connection to proceed while maintaining security awareness + } } else { this._secureLog('info', 'DTLS fingerprint validation disabled - proceeding without validation'); @@ -10793,10 +10648,6 @@ async processMessage(data) { } initiateVerification() { - // CRITICAL SECURITY: SAS verification initiation - // - This is the ONLY protection against MITM attacks - // - Self-signed ECDSA keys don't provide authentication - // - Both parties must compare the same verification code out-of-band if (this.isInitiator) { // Ensure verification initiation notice wasn't already sent @@ -10814,10 +10665,6 @@ async processMessage(data) { } confirmVerification() { - // CRITICAL SECURITY: SAS verification confirmation - // - This sends our verification confirmation to the peer - // - Both parties must confirm before connection is established - // - Only after mutual verification is the connection MITM-protected try { console.log('πŸ“€ confirmVerification - sending local confirmation'); @@ -10951,10 +10798,6 @@ async processMessage(data) { } handleVerificationRequest(data) { - // CRITICAL SECURITY: SAS verification is the ONLY MITM protection - // - Self-signed ECDSA keys don't provide authentication - // - MITM can substitute both keys and "self-sign" them - // - This verification must happen out-of-band (voice, video, in-person) console.log('πŸ” handleVerificationRequest called with:'); console.log(' - receivedCode:', data.code, '(type:', typeof data.code, ')'); @@ -10975,13 +10818,6 @@ async processMessage(data) { }; this.dataChannel.send(JSON.stringify(responsePayload)); - // NOTE: Do NOT set isVerified = true here - wait for user confirmation - // this._setVerifiedStatus(true, 'SAS_VERIFIED', { receivedCode: data.code, expectedCode: this.verificationCode }); - - // NOTE: Do NOT remove verification gate here - wait for user confirmation - // this._enforceVerificationGate('verification_success', false); - // this.onStatusChange?.('verified'); - // Ensure verification success notice wasn't already sent if (!this.verificationNotificationSent) { this.verificationNotificationSent = true; @@ -11014,10 +10850,6 @@ async processMessage(data) { } handleSASCode(data) { - // CRITICAL SECURITY: Receive SAS code from Offer side - // - This ensures both parties see the same verification code - // - SAS code is computed on Offer side and sent to Answer side - // - Both parties must verify the same code out-of-band console.log('πŸ“₯ Received SAS code from Offer side:', data.code); @@ -11032,22 +10864,8 @@ async processMessage(data) { } handleVerificationResponse(data) { - // CRITICAL SECURITY: SAS verification response handling - // - This confirms that the peer has verified our SAS code - // - Both parties must verify the same code out-of-band - // - Only after mutual SAS verification is the connection MITM-protected if (data.ok === true) { - // βœ… Peer has verified our SAS code - mutual verification complete - // NOTE: Do NOT set isVerified = true here - wait for user confirmation - // this._setVerifiedStatus(true, 'SAS_MUTUAL_VERIFIED', { - // verificationMethod: data.verificationMethod || 'SAS', - // securityLevel: data.securityLevel || 'MITM_PROTECTED' - // }); - - // NOTE: Do NOT remove verification gate here - wait for user confirmation - // this._enforceVerificationGate('verification_response_success', false); - // this.onStatusChange?.('verified'); // Log successful mutual SAS verification this._secureLog('info', 'Mutual SAS verification completed - MITM protection active', { @@ -11087,10 +10905,6 @@ async processMessage(data) { offerData.salt.length === 32; } - // CRITICAL: Enhanced validation with strict security checks - // - Syntax errors in validation can break security flow - // - Any validation failure must result in hard disconnect - // - No fallback allowed for security-critical validation validateEnhancedOfferData(offerData) { console.log('🎯 validateEnhancedOfferData called with:', offerData ? 'valid object' : 'null/undefined'); try { @@ -11180,10 +10994,6 @@ async processMessage(data) { throw new Error('CRITICAL SECURITY FAILURE: ECDSA key missing keyData or signature'); } - // CRITICAL: Validate SAS verification code format - // - This code is the ONLY protection against MITM attacks - // - Self-signed ECDSA keys don't provide authentication - // - Code must be at least 6 characters for security if (typeof offerData.verificationCode !== 'string' || offerData.verificationCode.length < 6) { throw new Error('Invalid SAS verification code format - MITM protection required'); } @@ -11228,23 +11038,18 @@ async processMessage(data) { return true; } catch (error) { console.log('🎯 validateEnhancedOfferData ERROR:', error.message); - // CRITICAL: Security validation errors must be logged and result in hard abort - // - No fallback or graceful handling for security-critical validation - // - Syntax errors in critical path must break connection immediately this._secureLog('error', 'CRITICAL: Security validation failed - hard abort required', { error: error.message, errorType: error.constructor.name, timestamp: Date.now() }); - - // CRITICAL: Re-throw security validation errors to ensure hard abort - // Do NOT return false for security-critical validation failures + throw new Error(`CRITICAL SECURITY VALIDATION FAILURE: ${error.message}`); } } async sendSecureMessage(message) { - // SECURE: Comprehensive input validation + // Comprehensive input validation const validation = this._validateInputData(message, 'sendSecureMessage'); if (!validation.isValid) { const errorMessage = `Input validation failed: ${validation.errors.join(', ')}`; @@ -11255,15 +11060,15 @@ async processMessage(data) { throw new Error(errorMessage); } - // SECURE: Rate limiting check + // Rate limiting check if (!this._checkRateLimit('sendSecureMessage')) { throw new Error('Rate limit exceeded for secure message sending'); } - // CRITICAL SECURITY: Enforce verification gate + // Enforce verification gate this._enforceVerificationGate('sendSecureMessage'); - // SECURE: Quick readiness check WITHOUT mutex + // Quick readiness check WITHOUT mutex if (!this.isConnected()) { if (validation.sanitizedData && typeof validation.sanitizedData === 'object' && validation.sanitizedData.type && validation.sanitizedData.type.startsWith('file_')) { throw new Error('Connection not ready for file transfer. Please ensure the connection is established and verified.'); @@ -11272,7 +11077,7 @@ async processMessage(data) { throw new Error('Connection not ready. Message queued for sending.'); } - // SECURE: Use mutex ONLY for cryptographic operations + // Use mutex ONLY for cryptographic operations return this._withMutex('cryptoOperation', async (operationId) => { // Re-check inside critical section if (!this.isConnected() || !this.isVerified) { @@ -11284,24 +11089,24 @@ async processMessage(data) { throw new Error('Encryption keys not initialized'); } - // SECURE: Additional rate limiting check + // Additional rate limiting check if (!window.EnhancedSecureCryptoUtils.rateLimiter.checkMessageRate(this.rateLimiterId)) { throw new Error('Message rate limit exceeded (60 messages per minute)'); } try { - // SECURE: Accept strings and objects; stringify objects + // Accept strings and objects; stringify objects const textToSend = typeof validation.sanitizedData === 'string' ? validation.sanitizedData : JSON.stringify(validation.sanitizedData); const sanitizedMessage = window.EnhancedSecureCryptoUtils.sanitizeMessage(textToSend); const messageId = `msg_${Date.now()}_${this.messageCounter++}`; - // CRITICAL SECURITY: Create AAD with sequence number for anti-replay protection + // Create AAD with sequence number for anti-replay protection if (typeof this._createMessageAAD !== 'function') { throw new Error('_createMessageAAD method is not available in sendSecureMessage. Manager may not be fully initialized.'); } const aad = message.aad || this._createMessageAAD('enhanced_message', { content: sanitizedMessage }); - // SECURE: Use enhanced encryption with AAD and sequence number + // Use enhanced encryption with AAD and sequence number const encryptedData = await window.EnhancedSecureCryptoUtils.encryptMessage( sanitizedMessage, this.encryptionKey, @@ -11319,7 +11124,7 @@ async processMessage(data) { }; this.dataChannel.send(JSON.stringify(payload)); - // SECURE: Locally display only plain strings to avoid UI duplication + // Locally display only plain strings to avoid UI duplication if (typeof validation.sanitizedData === 'string') { this.deliverMessageToUI(validation.sanitizedData, 'sent'); } @@ -11348,7 +11153,7 @@ async processMessage(data) { } startHeartbeat() { - // SECURE: Heartbeat moved to unified scheduler with connection validation + // Heartbeat moved to unified scheduler with connection validation this._secureLog('info', 'πŸ”§ Heartbeat moved to unified scheduler'); // Store heartbeat configuration for scheduler @@ -11360,14 +11165,14 @@ async processMessage(data) { } stopHeartbeat() { - // SECURE: Heartbeat stopped via unified scheduler + // Heartbeat stopped via unified scheduler if (this._heartbeatConfig) { this._heartbeatConfig.enabled = false; } } /** - * SECURE: Stop all active timers and cleanup scheduler + * Stop all active timers and cleanup scheduler */ _stopAllTimers() { this._secureLog('info', 'πŸ”§ Stopping all timers and cleanup scheduler'); @@ -11450,7 +11255,7 @@ async processMessage(data) { } disconnect() { - // SECURE: Stop all timers first + // Stop all timers first this._stopAllTimers(); if (this.fileTransferSystem) { @@ -11498,12 +11303,6 @@ async processMessage(data) { } })); - // Do not auto-reconnect to avoid closing the session on errors - // setTimeout(() => { - // if (!this.intentionalDisconnect) { - // this.attemptReconnection(); - // } - // }, 3000); } sendDisconnectNotification() { @@ -11545,8 +11344,7 @@ async processMessage(data) { this.reconnectionFailedNotificationSent = true; this.deliverMessageToUI('❌ Unable to reconnect. A new connection is required.', 'system'); } - // Do not call cleanupConnection automatically to avoid closing the session on errors - // this.disconnect(); + } handlePeerDisconnectNotification(data) { @@ -11585,7 +11383,7 @@ async processMessage(data) { } /** - * CRITICAL FIX: Secure disconnect with complete memory cleanup + * Secure disconnect with complete memory cleanup */ disconnect() { this.stopHeartbeat(); @@ -11593,21 +11391,21 @@ async processMessage(data) { this.processedMessageIds.clear(); this.messageCounter = 0; - // CRITICAL FIX: Secure cleanup of cryptographic materials + // Secure cleanup of cryptographic materials this._secureCleanupCryptographicMaterials(); - // CRITICAL FIX: Secure wipe of PFS key versions + // Secure wipe of PFS key versions this.keyVersions.clear(); this.oldKeys.clear(); this.currentKeyVersion = 0; this.lastKeyRotation = Date.now(); - // CRITICAL FIX: Reset message counters + // Reset message counters this.sequenceNumber = 0; this.expectedSequenceNumber = 0; - this.replayWindow.clear(); // CRITICAL SECURITY: Clear replay window + this.replayWindow.clear(); // Clear replay window - // CRITICAL FIX: Reset security features + // Reset security features this.securityFeatures = { hasEncryption: true, hasECDH: true, @@ -11621,7 +11419,7 @@ async processMessage(data) { hasPFS: true }; - // CRITICAL FIX: Close connections + // Close connections if (this.dataChannel) { this.dataChannel.close(); this.dataChannel = null; @@ -11631,7 +11429,7 @@ async processMessage(data) { this.peerConnection = null; } - // CRITICAL FIX: Secure wipe of message queue + // Secure wipe of message queue if (this.messageQueue && this.messageQueue.length > 0) { this.messageQueue.forEach((message, index) => { this._secureWipeMemory(message, `messageQueue[${index}]`); @@ -11639,7 +11437,7 @@ async processMessage(data) { this.messageQueue = []; } - // CRITICAL FIX: Force garbage collection + // Force garbage collection this._forceGarbageCollection(); document.dispatchEvent(new CustomEvent('connection-cleaned', { @@ -11649,19 +11447,19 @@ async processMessage(data) { } })); - // CRITICAL FIX: Notify UI about complete cleanup + // Notify UI about complete cleanup this.onStatusChange('disconnected'); this.onKeyExchange(''); this.onVerificationRequired(''); this._secureLog('info', 'πŸ”’ Connection securely cleaned up with complete memory wipe'); - // CRITICAL FIX: Reset the intentional disconnect flag + // Reset the intentional disconnect flag this.intentionalDisconnect = false; } // Public method to send files async sendFile(file) { - // CRITICAL SECURITY: Enforce verification gate for file transfers + // Enforce verification gate for file transfers this._enforceVerificationGate('sendFile'); if (!this.isConnected()) { @@ -11680,7 +11478,7 @@ async processMessage(data) { } } - // CRITICAL FIX: Verify key readiness + // Verify key readiness if (!this.encryptionKey || !this.macKey) { throw new Error('Encryption keys not ready. Please wait for connection to be fully established.'); } @@ -11848,9 +11646,6 @@ async processMessage(data) { console.log('πŸ”“ Session activated - forcing connection status to connected'); this.onStatusChange('connected'); - // CRITICAL SECURITY FIX: Do NOT set isVerified = true here! - // Session activation does NOT imply cryptographic verification - // isVerified can only be set through proper SAS verification console.log('⚠️ Session activated but NOT verified - cryptographic verification still required'); } @@ -12134,18 +11929,18 @@ checkFileTransferReadiness() { _validateNestedEncryptionSecurity() { if (this.securityFeatures.hasNestedEncryption && this.nestedEncryptionKey) { - // CRITICAL FIX: Test secure IV generation with reuse prevention + // Test secure IV generation with reuse prevention try { const testIV1 = this._generateSecureIV(EnhancedSecureWebRTCManager.SIZES.NESTED_ENCRYPTION_IV_SIZE, 'securityTest1'); const testIV2 = this._generateSecureIV(EnhancedSecureWebRTCManager.SIZES.NESTED_ENCRYPTION_IV_SIZE, 'securityTest2'); - // CRITICAL FIX: Verify IVs are different and properly tracked + // Verify IVs are different and properly tracked if (testIV1.every((byte, index) => byte === testIV2[index])) { this._secureLog('error', '❌ CRITICAL: Nested encryption security validation failed - IVs are identical!'); return false; } - // CRITICAL FIX: Verify IV tracking system is working + // Verify IV tracking system is working const stats = this._getIVTrackingStats(); if (stats.totalIVs < 2) { this._secureLog('error', '❌ CRITICAL: IV tracking system not working properly'); @@ -12218,7 +12013,7 @@ class SecureKeyStorage { const keyData = await crypto.subtle.exportKey('jwk', cryptoKey); const encryptedKeyData = await this._encryptKeyData(keyData); - // CRITICAL FIX: Validate that extractable keys are properly encrypted + // Validate that extractable keys are properly encrypted if (!encryptedKeyData || encryptedKeyData.byteLength === 0) { throw new Error('Failed to encrypt extractable key data'); } @@ -12246,7 +12041,7 @@ class SecureKeyStorage { created: Date.now(), lastAccessed: Date.now(), extractable: true, - encrypted: true // CRITICAL FIX: Mark extractable keys as encrypted + encrypted: true // Mark extractable keys as encrypted }); return true; @@ -12267,7 +12062,7 @@ class SecureKeyStorage { // For non-encrypted keys (non-extractable), return directly if (!metadata.encrypted) { - // CRITICAL FIX: Only non-extractable keys should be non-encrypted + // Only non-extractable keys should be non-encrypted if (metadata.extractable === false) { return this._keyReferences.get(keyId); } else { @@ -12385,7 +12180,7 @@ class SecureKeyStorage { } } - // CRITICAL FIX: Validate storage integrity + // Validate storage integrity validateStorageIntegrity() { const violations = []; @@ -12432,7 +12227,7 @@ class SecureKeyStorage { // Method _generateNextSequenceNumber moved to constructor area for early availability /** - * CRITICAL SECURITY: Validate incoming message sequence number + * Validate incoming message sequence number * This prevents replay attacks and ensures message ordering */ _validateIncomingSequenceNumber(receivedSeq, context = 'unknown') { @@ -12514,7 +12309,7 @@ class SecureKeyStorage { // Method _createMessageAAD moved to constructor area for early availability /** - * CRITICAL SECURITY: Validate message AAD with sequence number + * Validate message AAD with sequence number * This ensures message integrity and prevents replay attacks */ _validateMessageAAD(aadString, expectedMessageType = null) { @@ -12530,7 +12325,7 @@ class SecureKeyStorage { throw new Error('AAD keyFingerprint mismatch - possible key substitution attack'); } - // CRITICAL SECURITY: Validate sequence number + // Validate sequence number if (!this._validateIncomingSequenceNumber(aad.sequenceNumber, aad.messageType)) { throw new Error('Sequence number validation failed - possible replay or DoS attack'); } @@ -12548,7 +12343,7 @@ class SecureKeyStorage { } /** - * CRITICAL SECURITY: Get anti-replay protection status + * Get anti-replay protection status * This shows the current state of replay protection */ getAntiReplayStatus() { @@ -12567,7 +12362,7 @@ class SecureKeyStorage { } /** - * CRITICAL SECURITY: Configure anti-replay protection + * Configure anti-replay protection * This allows fine-tuning of replay protection parameters */ configureAntiReplayProtection(config) {