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RELEASE_NOTES_4.2.0.md

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Aegis Vault Android v4.2.0

Release date: 2026-03-29

This release aligns the Android application with the Aegis Desktop v4.2.0 ecosystem, focusing on Security Center maturity, zero-knowledge relay synchronization stability, and production-grade performance.

🚀 Highlights

  • Desktop Ecosystem Alignment: Full interoperability and synchronization support for Aegis Desktop v4.2.0.
  • Security Center v2: Proactive vault health analysis, risk scoring, and security recommendations.
  • Relay Sync Stability: Improved retry mechanisms and session management for E2E encrypted sync.
  • Performance Optimization: JS bundle optimizations via Hermes and R8 for a faster, lighter application.
  • Hardened Security: Refined FLAG_SECURE implementation and stricter transport-layer security defaults.

🛡️ Security and Infrastructure

Vault Integrity

  • SQLCipher 4.5.6: Latest stable database encryption for all local records.
  • Argon2id Integration: Hardened key derivation for multi-device sync and exports.
  • Android Keystore v3: Improved hardware-backed key storage handling for modern Android APIs.

Transport Security

  • Relay Communication: TLS 1.3 enforced for all relay server interactions.
  • Certificate Pinning: Enhanced validation for cloud sync endpoints.
  • Cleartext Traffic Protection: Native Android security configuration blocks all non-HTTPS requests.

📦 Distribution Note

  • F-Droid Compatibility: Metadata updated to 4.2.0 (420) for next build cycle.
  • Release Signing: Production signing flow maintained for official APK distribution.
  • Interoperability: Users on previous versions can safely upgrade while maintaining data integrity.

📋 Verification Results

  • ✅ Signed release build successful.
  • ✅ Real-device field test passed.
  • ✅ E2E Sync with Desktop v4.2.0 validated.
  • ✅ 160+ Unit and Integration tests passing.

Support

If you encounter issues or have suggestions: