trusted_time 1.2.1

Tamper-proof, high-precision network time for Flutter. Anchored to hardware monotonic clocks to prevent system-time manipulation.

1.2.1

Critical enhancements

• iOS/macOS: Enhanced channel initialization avoiding naming mismatch
• Android: Optimized BroadcastReceiver lifecycle to efficiently detach
• Android: Upgraded BackgroundSyncWorker to perform HTTPS connectivity check
• SyncClock.elapsedSinceAnchorMs() upgraded to use Dart Stopwatch (monotonic) instead of wall-clock delta
• Linux: Implemented proper get_platform_version() parsing to resolve implicit logic
• Example integration test upgraded to effectively await TrustedTime.initialize()

High-priority enhancements

• iOS BGTask handler upgraded to perform HTTPS HEAD check (parity with Android worker)
• iOS BGTask closure stabilized to capture dynamic interval value
• Windows native test enhanced building with explicit constructor
• Example widget test stabilized to match actual app UI

Engine improvements

• Serialized sync via Completer introduced to prevent concurrent _performSync() calls
• Integrity events (systemClockJumped, deviceRebooted) configured to invalidate trust and optimally trigger resync
• Automatic retry engine introduced with configurable delay on sync failure
• Background sync optimally enabled on both warm-restore and cold-start paths
• dispose() architecture enhanced to clear SyncClock static state, preventing cross-test leakage
• initialize() short-circuits engine init immediately when test mock is active
• timezoneChanged streamlined as an intentional non-resync event (UTC is timezone-independent)
• All debugPrint calls optimized and guarded by kDebugMode for release builds

Algorithm & sources optimizations

• Marzullo tie-breaking upgraded: lower endpoints prioritize over upper at equal times
• bestEnd intelligently resets when finding new maximum overlap depth
• HttpsSource: Implemented robust HEAD→GET fallback architecture on 405 or missing Date header
• Comprehensive HTTP date parser expanded (RFC 7231 + RFC 850 formats)
• NTP source optimized via conditional imports (dart:io guard) for deep web compatibility
• TrustedTimeConfig.operator== and hashCode stabilized to comprehensively include additionalSources

Platform native architecture

• Android: Migrated RECEIVER_NOT_EXPORTED flags properly for API 33+ implicit-intent receivers
• Android: Deprecated and removed unused SharedPreferences writes from background worker
• Android: Standardized build.gradle structure alongside AndroidManifest.xml
• iOS: BGTaskScheduler.register initialization restricted optimally to run once via bgRegistered flag
• iOS: Info.plist properly documents BGTaskSchedulerPermittedIdentifiers requirement tracking
• Windows: Deprecated legacy "trusted_time" method channel registration safely
• Linux: Deprecated legacy "trusted_time" method channel registration safely
• Web: Registered MethodChannel handlers gracefully for monotonic and background channels

Cleanup & Standardization

• Deprecated 7 dead platform abstraction files
• Streamlined bundle, removing plugin_platform_interface dependency
• Reverted misleading Package.swift SPM target for CocoaPods plugin standard
• Stripped committed test_results.txt and logcat_full.txt logs fully prioritizing Git cleanliness
• Renamed sync_engine_test.dart → models_test.dart to logically match content
• Broadened SDK constraints scaling accessibility: sdk: >=3.4.0, flutter: >=3.19.0

Validation Pipeline Enhancement

• Scaled 54 total tests across 9 test files (up from 8 tests originally)
• Instated TrustedTimeEstimate tests (isReasonable, toString)
• Instated IntegrityMonitor tests (reboot detection, multiple attach, double dispose)
• Instated TrustedTimeConfig equality tests covering additionalSources
• Instated SyncClock.reset() verification structure
• Adjusted timing bounds dynamically in SyncClock tests for CI reliability scaling

CI & Documentation

• CI workflow modernized to deeply analyze example app alongside plugin
• SECURITY.md validation tables strictly updated
• CHANGELOG.md properly reflects comprehensive audit validations

1.2.0

Major stability and accuracy update with desktop support.

• Added integrity monitoring (Stream<IntegrityEvent>)
• Added offline time via nowEstimated()
• Added testing override support
• Improved timezone reliability (IANA-based)
• Added Windows & Linux observers

Fixes & improvements

• Safer storage behavior
• Correct config usage (NTP/HTTPS)
• Windows & Linux stability fixes
• SDK updates

Breaking

• UnknownTimezoneException replaces generic errors

1.0.5

• iOS/macOS: Implemented proper Swift Package Manager (SPM) support following Flutter 3.24+ standards.
• Chore: Removed obsolete lint rules from analysis_options.yaml for Dart 3.x compatibility.

1.0.4

• Web: Full WASM compatibility by removing dart:io dependencies and implementing conditional imports.

1.0.3

• Fix workflows: formatting and release check (fa4e61a)
• Format env block in release workflow (35168a2)
• Add automated release workflows and iOS packaging (68949cd)

1.0.1

• Chore: Implemented a fully automated release and publishing workflow using GitHub Actions.
• Fix: Added full platform support for Web, Windows, macOS, and Linux.

1.0.0

• Initial High-Integrity Release: Production-ready engine for tamper-proof UTC time.
• Marzullo Consensus: Multi-source quorum resolution from Tier-1 NTP and HTTPS providers.
• Temporal Baseline: Hardware-anchored monotonic timeline ensuring zero-drift consistency.
• Full Jitter Backoff: Industry-standard retry strategy for high-resiliency cloud connectivity.
• Zero-Alloc Performance: Memory-optimized internal stack with <1μs synchronous retrieval.