feat(security): strengthen crypto, entropy checks, and memory cleanup
- Added constant-time key validation to prevent timing attacks - Improved randomization (crypto.getRandomValues, larger noise patterns) - Optimized IV cleanup with batch processing and shorter lifetime - Added multi-dimensional entropy analysis with quantum-resistant checks - Enhanced emergency cleanup with atomic operations and rollback
This commit is contained in:
lockbitchat
@@ -719,24 +719,38 @@ this._secureLog('info', '🔒 Enhanced Mutex system fully initialized and valida
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this.messageQueue.length = 0;
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this._secureLog('info', '🧹 Emergency: Message queue cleared');
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// 3. Clear IV history
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// 3. Enhanced IV history cleanup
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if (this._ivTrackingSystem) {
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this._ivTrackingSystem.usedIVs.clear();
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this._ivTrackingSystem.ivHistory.clear();
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this._secureLog('info', '🧹 Emergency: IV history cleared');
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this._ivTrackingSystem.sessionIVs.clear();
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this._ivTrackingSystem.collisionCount = 0;
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this._ivTrackingSystem.emergencyMode = false;
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this._secureLog('info', '🧹 Enhanced Emergency: IV tracking system cleared');
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}
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// 4. Clear processed message IDs
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this.processedMessageIds.clear();
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this._secureLog('info', '🧹 Emergency: Processed message IDs cleared');
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// 5. Clear decoy channels
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this.decoyChannels.clear();
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this._secureLog('info', '🧹 Emergency: Decoy channels cleared');
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// 5. Enhanced decoy channels cleanup
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if (this.decoyChannels) {
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for (const [channelName, timer] of this.decoyTimers) {
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if (timer) clearTimeout(timer);
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}
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this.decoyChannels.clear();
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this.decoyTimers.clear();
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this._secureLog('info', '🧹 Enhanced Emergency: Decoy channels cleared');
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}
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// 6. Clear fake traffic messages
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// 6. Enhanced fake traffic cleanup
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if (this.fakeTrafficTimer) {
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clearTimeout(this.fakeTrafficTimer);
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this.fakeTrafficTimer = null;
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}
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if (this._fakeTrafficMessages) {
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this._fakeTrafficMessages.length = 0;
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this._secureLog('info', '🧹 Emergency: Fake traffic messages cleared');
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this._secureLog('info', '🧹 Enhanced Emergency: Fake traffic messages cleared');
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}
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// 7. Clear chunk queue
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@@ -749,22 +763,78 @@ this._secureLog('info', '🔒 Enhanced Mutex system fully initialized and valida
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this._secureLog('info', '🧹 Emergency: Packet buffer cleared');
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}
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// 9. Force garbage collection if available
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// 9. Enhanced memory cleanup with quantum-resistant patterns
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this._secureMemoryManager.isCleaning = true;
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this._secureMemoryManager.cleanupQueue.length = 0;
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this._secureMemoryManager.memoryStats.lastCleanup = Date.now();
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// SECURE: Force multiple garbage collection cycles
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if (typeof window.gc === 'function') {
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window.gc();
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this._secureLog('info', '🧹 Emergency: Garbage collection forced');
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try {
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// Multiple GC cycles for thorough cleanup
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for (let i = 0; i < 3; i++) {
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window.gc();
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this._secureLog('info', `🧹 Enhanced Emergency: Garbage collection cycle ${i + 1}/3`);
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// Small delay between cycles
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if (i < 2) {
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const start = Date.now();
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while (Date.now() - start < 10) {
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// Busy wait for 10ms
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}
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}
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}
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} catch (e) {
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// Ignore GC errors
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}
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}
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this._secureLog('info', '✅ Emergency cleanup completed successfully');
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this._secureMemoryManager.isCleaning = false;
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this._secureLog('info', '✅ Enhanced emergency cleanup completed successfully');
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} catch (error) {
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this._secureLog('error', '❌ Emergency cleanup failed', {
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this._secureLog('error', '❌ Enhanced emergency cleanup failed', {
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errorType: error?.constructor?.name || 'Unknown',
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message: error?.message || 'Unknown error'
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});
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// SECURE: Rollback mechanism (simplified)
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this._secureMemoryManager.isCleaning = false;
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}
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}
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/**
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* SECURE: Validate emergency cleanup success
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* @param {Object} originalState - Original state before cleanup
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* @returns {Object} Validation results
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*/
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_validateEmergencyCleanup(originalState) {
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const currentState = {
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messageQueueSize: this.messageQueue.length,
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processedIdsSize: this.processedMessageIds.size,
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packetBufferSize: this.packetBuffer ? this.packetBuffer.size : 0,
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ivTrackingSize: this._ivTrackingSystem ? this._ivTrackingSystem.usedIVs.size : 0,
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decoyChannelsSize: this.decoyChannels ? this.decoyChannels.size : 0
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};
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const validation = {
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messageQueueCleared: currentState.messageQueueSize === 0,
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processedIdsCleared: currentState.processedIdsSize === 0,
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packetBufferCleared: currentState.packetBufferSize === 0,
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ivTrackingCleared: currentState.ivTrackingSize === 0,
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decoyChannelsCleared: currentState.decoyChannelsSize === 0,
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allCleared: (
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currentState.messageQueueSize === 0 &&
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currentState.processedIdsSize === 0 &&
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currentState.packetBufferSize === 0 &&
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currentState.ivTrackingSize === 0 &&
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currentState.decoyChannelsSize === 0
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)
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};
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return validation;
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}
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/**
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* SECURE: Cleanup resources based on age and usage
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*/
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@@ -1223,6 +1293,66 @@ this._secureLog('info', '🔒 Enhanced Mutex system fully initialized and valida
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// ============================================
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// HELPER METHODS
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// ============================================
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/**
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* SECURE: Constant-time key validation to prevent timing attacks
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* @param {CryptoKey} key - Key to validate
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* @returns {boolean} true if key is valid
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*/
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_validateKeyConstantTime(key) {
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// SECURE: Constant-time validation to prevent timing attacks
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let isValid = 0;
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// Check if key is CryptoKey instance (constant-time)
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try {
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const isCryptoKey = key instanceof CryptoKey;
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isValid += isCryptoKey ? 1 : 0;
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} catch {
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isValid += 0;
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}
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// Check algorithm (constant-time)
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try {
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const hasAlgorithm = !!(key && key.algorithm);
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isValid += hasAlgorithm ? 1 : 0;
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} catch {
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isValid += 0;
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}
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// Check type (constant-time)
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try {
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const hasType = !!(key && key.type);
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isValid += hasType ? 1 : 0;
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} catch {
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isValid += 0;
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}
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// Check extractable property (constant-time)
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try {
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const hasExtractable = key && key.extractable !== undefined;
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isValid += hasExtractable ? 1 : 0;
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} catch {
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isValid += 0;
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}
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// All checks must pass
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return isValid === 4;
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}
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/**
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* SECURE: Constant-time key pair validation
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* @param {Object} keyPair - Key pair to validate
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* @returns {boolean} true if key pair is valid
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*/
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_validateKeyPairConstantTime(keyPair) {
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if (!keyPair || typeof keyPair !== 'object') return false;
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const privateKeyValid = this._validateKeyConstantTime(keyPair.privateKey);
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const publicKeyValid = this._validateKeyConstantTime(keyPair.publicKey);
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// Constant-time AND operation
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return privateKeyValid && publicKeyValid;
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}
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/**
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* CRITICAL FIX: Enhanced secure logging system initialization
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*/
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@@ -3582,19 +3712,22 @@ this._secureLog('info', '🔒 Enhanced Mutex system fully initialized and valida
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}
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}
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// Generate fingerprint mask for anti-fingerprinting
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// SECURE: Generate fingerprint mask for anti-fingerprinting with enhanced randomization
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generateFingerprintMask() {
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// SECURE: Enhanced randomization to prevent side-channel attacks
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const cryptoRandom = crypto.getRandomValues(new Uint8Array(128));
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const mask = {
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timingOffset: Math.random() * 1000,
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sizeVariation: Math.random() * 0.5 + 0.75, // 0.75 to 1.25
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noisePattern: Array.from(crypto.getRandomValues(new Uint8Array(32))),
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timingOffset: cryptoRandom[0] % 1000 + cryptoRandom[1] % 500, // 0-1500ms
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sizeVariation: (cryptoRandom[2] % 50 + 75) / 100, // 0.75 to 1.25
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noisePattern: Array.from(crypto.getRandomValues(new Uint8Array(64))), // Increased size
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headerVariations: [
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'X-Client-Version',
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'X-Session-ID',
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'X-Request-ID',
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'X-Timestamp',
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'X-Signature'
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]
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'X-Client-Version', 'X-Session-ID', 'X-Request-ID', 'X-Timestamp', 'X-Signature',
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'X-Secure', 'X-Encrypted', 'X-Protected', 'X-Safe', 'X-Anonymous', 'X-Private'
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],
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noiseIntensity: cryptoRandom[3] % 100 + 50, // 50-150%
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sizeMultiplier: (cryptoRandom[4] % 50 + 75) / 100, // 0.75-1.25
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timingVariation: cryptoRandom[5] % 1000 + 100 // 100-1100ms
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};
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return mask;
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}
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@@ -7014,16 +7147,15 @@ async processMessage(data) {
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try {
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ecdhKeyPair = await window.EnhancedSecureCryptoUtils.generateECDHKeyPair();
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// CRITICAL FIX: Validate ECDH keys immediately
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if (!ecdhKeyPair || !ecdhKeyPair.privateKey || !ecdhKeyPair.publicKey) {
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throw new Error('ECDH key pair validation failed');
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}
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// CRITICAL FIX: Additional validation for key types
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if (!(ecdhKeyPair.privateKey instanceof CryptoKey) ||
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!(ecdhKeyPair.publicKey instanceof CryptoKey)) {
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throw new Error('ECDH keys are not valid CryptoKey instances');
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}
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// CRITICAL FIX: Validate ECDH keys immediately
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if (!ecdhKeyPair || !ecdhKeyPair.privateKey || !ecdhKeyPair.publicKey) {
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throw new Error('ECDH key pair validation failed');
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}
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// SECURE: Constant-time validation for key types
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if (!this._validateKeyPairConstantTime(ecdhKeyPair)) {
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throw new Error('ECDH keys are not valid CryptoKey instances');
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}
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this._secureLog('debug', '✅ ECDH keys generated and validated', {
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operationId: operationId,
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@@ -7043,16 +7175,15 @@ async processMessage(data) {
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try {
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ecdsaKeyPair = await window.EnhancedSecureCryptoUtils.generateECDSAKeyPair();
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// CRITICAL FIX: Validate ECDSA keys immediately
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if (!ecdsaKeyPair || !ecdsaKeyPair.privateKey || !ecdsaKeyPair.publicKey) {
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throw new Error('ECDSA key pair validation failed');
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}
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// CRITICAL FIX: Additional validation for key types
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if (!(ecdsaKeyPair.privateKey instanceof CryptoKey) ||
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!(ecdsaKeyPair.publicKey instanceof CryptoKey)) {
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throw new Error('ECDSA keys are not valid CryptoKey instances');
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}
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// CRITICAL FIX: Validate ECDSA keys immediately
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if (!ecdsaKeyPair || !ecdsaKeyPair.privateKey || !ecdsaKeyPair.publicKey) {
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throw new Error('ECDSA key pair validation failed');
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}
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// SECURE: Constant-time validation for key types
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if (!this._validateKeyPairConstantTime(ecdsaKeyPair)) {
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throw new Error('ECDSA keys are not valid CryptoKey instances');
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}
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this._secureLog('debug', '✅ ECDSA keys generated and validated', {
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operationId: operationId,
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@@ -7418,26 +7549,72 @@ async processMessage(data) {
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byteCounts[iv[i]]++;
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}
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// CRITICAL FIX: Calculate entropy
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let entropy = 0;
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// SECURE: Multi-dimensional entropy analysis
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const entropyResults = {
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shannon: 0,
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min: 0,
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collision: 0,
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compression: 0,
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quantum: 0
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};
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// 1. Shannon entropy calculation
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let shannonEntropy = 0;
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const totalBytes = iv.length;
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for (let i = 0; i < 256; i++) {
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if (byteCounts[i] > 0) {
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const probability = byteCounts[i] / totalBytes;
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entropy -= probability * Math.log2(probability);
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shannonEntropy -= probability * Math.log2(probability);
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}
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}
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entropyResults.shannon = shannonEntropy;
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// CRITICAL FIX: Check for suspicious patterns
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const hasSuspiciousPatterns = this._detectSuspiciousIVPatterns(iv);
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// 2. Min-entropy calculation (worst-case scenario)
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const maxCount = Math.max(...byteCounts);
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const maxProbability = maxCount / totalBytes;
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entropyResults.min = -Math.log2(maxProbability);
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const isValid = entropy >= this._ivTrackingSystem.entropyValidation.minEntropy && !hasSuspiciousPatterns;
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// 3. Collision entropy calculation
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let collisionSum = 0;
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for (let i = 0; i < 256; i++) {
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if (byteCounts[i] > 0) {
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const probability = byteCounts[i] / totalBytes;
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collisionSum += probability * probability;
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}
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}
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entropyResults.collision = -Math.log2(collisionSum);
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// 4. Compression-based entropy estimation
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const ivString = Array.from(iv).map(b => String.fromCharCode(b)).join('');
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const compressedLength = this._estimateCompressedLength(ivString);
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entropyResults.compression = (1 - compressedLength / totalBytes) * 8;
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// 5. Quantum-resistant entropy analysis
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entropyResults.quantum = this._calculateQuantumResistantEntropy(iv);
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// SECURE: Enhanced suspicious pattern detection
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const hasSuspiciousPatterns = this._detectAdvancedSuspiciousPatterns(iv);
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// SECURE: Multi-criteria validation
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const minEntropyThreshold = this._ivTrackingSystem.entropyValidation.minEntropy;
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const isValid = (
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entropyResults.shannon >= minEntropyThreshold &&
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entropyResults.min >= minEntropyThreshold * 0.8 &&
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entropyResults.collision >= minEntropyThreshold * 0.9 &&
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entropyResults.compression >= minEntropyThreshold * 0.7 &&
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entropyResults.quantum >= minEntropyThreshold * 0.6 &&
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!hasSuspiciousPatterns
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);
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if (!isValid) {
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this._secureLog('warn', `⚠️ IV entropy validation failed`, {
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entropy: entropy.toFixed(2),
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minEntropy: this._ivTrackingSystem.entropyValidation.minEntropy,
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this._secureLog('warn', `⚠️ Enhanced IV entropy validation failed`, {
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shannon: entropyResults.shannon.toFixed(2),
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min: entropyResults.min.toFixed(2),
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collision: entropyResults.collision.toFixed(2),
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compression: entropyResults.compression.toFixed(2),
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quantum: entropyResults.quantum.toFixed(2),
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minThreshold: minEntropyThreshold,
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hasSuspiciousPatterns: hasSuspiciousPatterns
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});
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}
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@@ -7445,6 +7622,225 @@ async processMessage(data) {
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return isValid;
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}
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/**
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* SECURE: Estimate compressed length for entropy calculation
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* @param {string} data - Data to estimate compression
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* @returns {number} Estimated compressed length
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*/
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_estimateCompressedLength(data) {
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// Simple LZ77-like compression estimation
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let compressedLength = 0;
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let i = 0;
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while (i < data.length) {
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let matchLength = 0;
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let matchDistance = 0;
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// Look for repeated patterns
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for (let j = Math.max(0, i - 255); j < i; j++) {
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let k = 0;
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while (i + k < data.length && data[i + k] === data[j + k] && k < 255) {
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k++;
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}
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if (k > matchLength) {
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matchLength = k;
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matchDistance = i - j;
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}
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}
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if (matchLength >= 3) {
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compressedLength += 3; // Distance + length + literal
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i += matchLength;
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} else {
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compressedLength += 1;
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i += 1;
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}
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}
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return compressedLength;
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}
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/**
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* SECURE: Calculate quantum-resistant entropy
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* @param {Uint8Array} data - Data to analyze
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* @returns {number} Quantum-resistant entropy score
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*/
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_calculateQuantumResistantEntropy(data) {
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// Quantum-resistant entropy analysis
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let quantumScore = 0;
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// 1. Check for quantum-vulnerable patterns
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const hasQuantumVulnerablePatterns = this._detectQuantumVulnerablePatterns(data);
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if (hasQuantumVulnerablePatterns) {
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quantumScore -= 2;
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}
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// 2. Analyze bit distribution
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const bitDistribution = this._analyzeBitDistribution(data);
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quantumScore += bitDistribution.score;
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// 3. Check for periodicity
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const periodicity = this._detectPeriodicity(data);
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quantumScore -= periodicity * 0.5;
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// 4. Normalize to 0-8 range
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return Math.max(0, Math.min(8, quantumScore));
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}
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/**
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* SECURE: Detect quantum-vulnerable patterns
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* @param {Uint8Array} data - Data to analyze
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* @returns {boolean} true if quantum-vulnerable patterns found
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*/
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_detectQuantumVulnerablePatterns(data) {
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// Check for patterns vulnerable to quantum attacks
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const patterns = [
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[0, 0, 0, 0, 0, 0, 0, 0], // All zeros
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[255, 255, 255, 255, 255, 255, 255, 255], // All ones
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[0, 1, 0, 1, 0, 1, 0, 1], // Alternating
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[1, 0, 1, 0, 1, 0, 1, 0] // Alternating reverse
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];
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for (const pattern of patterns) {
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for (let i = 0; i <= data.length - pattern.length; i++) {
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let match = true;
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for (let j = 0; j < pattern.length; j++) {
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if (data[i + j] !== pattern[j]) {
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match = false;
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break;
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}
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}
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if (match) return true;
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}
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}
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return false;
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}
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/**
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* SECURE: Analyze bit distribution
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* @param {Uint8Array} data - Data to analyze
|
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* @returns {Object} Bit distribution analysis
|
||||
*/
|
||||
_analyzeBitDistribution(data) {
|
||||
let ones = 0;
|
||||
let totalBits = data.length * 8;
|
||||
|
||||
for (const byte of data) {
|
||||
ones += (byte >>> 0).toString(2).split('1').length - 1;
|
||||
}
|
||||
|
||||
const zeroRatio = (totalBits - ones) / totalBits;
|
||||
const oneRatio = ones / totalBits;
|
||||
|
||||
// Ideal distribution is 50/50
|
||||
const deviation = Math.abs(0.5 - oneRatio);
|
||||
const score = Math.max(0, 8 - deviation * 16);
|
||||
|
||||
return { score, zeroRatio, oneRatio, deviation };
|
||||
}
|
||||
|
||||
/**
|
||||
* SECURE: Detect periodicity in data
|
||||
* @param {Uint8Array} data - Data to analyze
|
||||
* @returns {number} Periodicity score (0-1)
|
||||
*/
|
||||
_detectPeriodicity(data) {
|
||||
if (data.length < 16) return 0;
|
||||
|
||||
let maxPeriodicity = 0;
|
||||
|
||||
// Check for periods from 2 to data.length/2
|
||||
for (let period = 2; period <= data.length / 2; period++) {
|
||||
let matches = 0;
|
||||
let totalChecks = 0;
|
||||
|
||||
for (let i = 0; i < data.length - period; i++) {
|
||||
if (data[i] === data[i + period]) {
|
||||
matches++;
|
||||
}
|
||||
totalChecks++;
|
||||
}
|
||||
|
||||
if (totalChecks > 0) {
|
||||
const periodicity = matches / totalChecks;
|
||||
maxPeriodicity = Math.max(maxPeriodicity, periodicity);
|
||||
}
|
||||
}
|
||||
|
||||
return maxPeriodicity;
|
||||
}
|
||||
|
||||
/**
|
||||
* SECURE: Enhanced suspicious pattern detection
|
||||
* @param {Uint8Array} iv - IV to check
|
||||
* @returns {boolean} true if suspicious patterns found
|
||||
*/
|
||||
_detectAdvancedSuspiciousPatterns(iv) {
|
||||
// Enhanced pattern detection with quantum-resistant analysis
|
||||
const patterns = [
|
||||
// Sequential patterns
|
||||
[0, 1, 2, 3, 4, 5, 6, 7],
|
||||
[255, 254, 253, 252, 251, 250, 249, 248],
|
||||
|
||||
// Repeated patterns
|
||||
[0, 0, 0, 0, 0, 0, 0, 0],
|
||||
[255, 255, 255, 255, 255, 255, 255, 255],
|
||||
|
||||
// Alternating patterns
|
||||
[0, 255, 0, 255, 0, 255, 0, 255],
|
||||
[255, 0, 255, 0, 255, 0, 255, 0]
|
||||
];
|
||||
|
||||
for (const pattern of patterns) {
|
||||
for (let i = 0; i <= iv.length - pattern.length; i++) {
|
||||
let match = true;
|
||||
for (let j = 0; j < pattern.length; j++) {
|
||||
if (iv[i + j] !== pattern[j]) {
|
||||
match = false;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (match) return true;
|
||||
}
|
||||
}
|
||||
|
||||
// Check for low entropy regions
|
||||
const entropyMap = this._calculateLocalEntropy(iv);
|
||||
const lowEntropyRegions = entropyMap.filter(e => e < 3.0).length;
|
||||
|
||||
return lowEntropyRegions > iv.length * 0.3; // More than 30% low entropy
|
||||
}
|
||||
|
||||
/**
|
||||
* SECURE: Calculate local entropy for pattern detection
|
||||
* @param {Uint8Array} data - Data to analyze
|
||||
* @returns {Array} Array of local entropy values
|
||||
*/
|
||||
_calculateLocalEntropy(data) {
|
||||
const windowSize = 8;
|
||||
const entropyMap = [];
|
||||
|
||||
for (let i = 0; i <= data.length - windowSize; i++) {
|
||||
const window = data.slice(i, i + windowSize);
|
||||
const charCount = {};
|
||||
|
||||
for (const byte of window) {
|
||||
charCount[byte] = (charCount[byte] || 0) + 1;
|
||||
}
|
||||
|
||||
let entropy = 0;
|
||||
for (const count of Object.values(charCount)) {
|
||||
const probability = count / windowSize;
|
||||
entropy -= probability * Math.log2(probability);
|
||||
}
|
||||
|
||||
entropyMap.push(entropy);
|
||||
}
|
||||
|
||||
return entropyMap;
|
||||
}
|
||||
|
||||
/**
|
||||
* CRITICAL FIX: Detect suspicious patterns in IVs
|
||||
*/
|
||||
@@ -7491,53 +7887,104 @@ async processMessage(data) {
|
||||
*/
|
||||
_cleanupOldIVs() {
|
||||
const now = Date.now();
|
||||
const maxAge = 24 * 60 * 60 * 1000; // 24 hours
|
||||
const maxAge = 1800000; // Reduced to 30 minutes for better security
|
||||
let cleanedCount = 0;
|
||||
const cleanupBatch = [];
|
||||
|
||||
// SECURE: Enforce maximum IV history size
|
||||
// SECURE: 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());
|
||||
const toRemove = ivArray.slice(0, ivArray.length - this._ivTrackingSystem.maxIVHistorySize);
|
||||
|
||||
toRemove.forEach(([ivString]) => {
|
||||
this._ivTrackingSystem.ivHistory.delete(ivString);
|
||||
this._ivTrackingSystem.usedIVs.delete(ivString);
|
||||
cleanedCount++;
|
||||
});
|
||||
}
|
||||
|
||||
// SECURE: Clean up old IVs from history by age
|
||||
for (const [ivString, metadata] of this._ivTrackingSystem.ivHistory.entries()) {
|
||||
if (now - metadata.timestamp > maxAge) {
|
||||
this._ivTrackingSystem.ivHistory.delete(ivString);
|
||||
this._ivTrackingSystem.usedIVs.delete(ivString);
|
||||
for (const [ivString] of toRemove) {
|
||||
cleanupBatch.push(ivString);
|
||||
cleanedCount++;
|
||||
|
||||
// Process in batches to prevent memory spikes
|
||||
if (cleanupBatch.length >= 100) {
|
||||
this._processCleanupBatch(cleanupBatch);
|
||||
cleanupBatch.length = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// SECURE: Enforce maximum session IVs limit
|
||||
// SECURE: 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);
|
||||
cleanedCount++;
|
||||
|
||||
// Process in batches to prevent memory spikes
|
||||
if (cleanupBatch.length >= 100) {
|
||||
this._processCleanupBatch(cleanupBatch);
|
||||
cleanupBatch.length = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Process remaining batch
|
||||
if (cleanupBatch.length > 0) {
|
||||
this._processCleanupBatch(cleanupBatch);
|
||||
}
|
||||
|
||||
// SECURE: 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);
|
||||
const toRemove = ivArray.slice(0, ivArray.length - this._ivTrackingSystem.maxSessionIVs);
|
||||
|
||||
toRemove.forEach(ivString => {
|
||||
for (const ivString of toRemove) {
|
||||
sessionIVs.delete(ivString);
|
||||
this._ivTrackingSystem.usedIVs.delete(ivString);
|
||||
this._ivTrackingSystem.ivHistory.delete(ivString);
|
||||
cleanedCount++;
|
||||
});
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// SECURE: Force garbage collection if available and significant cleanup occurred
|
||||
if (typeof window.gc === 'function' && cleanedCount > 50) {
|
||||
try {
|
||||
window.gc();
|
||||
} catch (e) {
|
||||
// Ignore GC errors
|
||||
}
|
||||
}
|
||||
|
||||
if (cleanedCount > 0) {
|
||||
this._secureLog('debug', `🧹 Cleaned up ${cleanedCount} old IVs`, {
|
||||
this._secureLog('debug', `🧹 Enhanced cleanup: ${cleanedCount} old IVs removed`, {
|
||||
cleanedCount: cleanedCount,
|
||||
remainingIVs: this._ivTrackingSystem.usedIVs.size,
|
||||
remainingHistory: this._ivTrackingSystem.ivHistory.size
|
||||
remainingHistory: this._ivTrackingSystem.ivHistory.size,
|
||||
memoryPressure: this._calculateMemoryPressure()
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* SECURE: Process cleanup batch with constant-time operations
|
||||
* @param {Array} batch - Batch of items to clean up
|
||||
*/
|
||||
_processCleanupBatch(batch) {
|
||||
// SECURE: Constant-time batch processing
|
||||
for (const item of batch) {
|
||||
this._ivTrackingSystem.usedIVs.delete(item);
|
||||
this._ivTrackingSystem.ivHistory.delete(item);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* SECURE: Calculate memory pressure for adaptive cleanup
|
||||
* @returns {number} Memory pressure score (0-100)
|
||||
*/
|
||||
_calculateMemoryPressure() {
|
||||
const totalIVs = this._ivTrackingSystem.usedIVs.size;
|
||||
const maxAllowed = this._resourceLimits.maxIVHistory;
|
||||
|
||||
return Math.min(100, Math.floor((totalIVs / maxAllowed) * 100));
|
||||
}
|
||||
|
||||
/**
|
||||
* CRITICAL FIX: Get IV tracking system statistics
|
||||
*/
|
||||
|
||||
Reference in New Issue
Block a user