Verify an Android APK with SHA-256: What the Result Means
How to compare an APK against a published SHA-256 checksum, and why a matching hash does not prove source equivalence or a security audit.
Comparison
THE LIVARA JOURNAL / PRIVACY & TECHNOLOGY
A more private internet.
A little more understood.
Ideas, explainers, and useful questions about encryption, private messaging, and the technology in your everyday life.
Discover the latest ↓UNDERSTAND SECURITY. MAKE ROOM FOR CONVERSATION.A publication by Livara ↗
THE READING ROOM
Security
The Asynchronous Trap: How Post-Quantum Encryption Works When Your Contact Is Offline
Discover how hybrid post-quantum messaging protocols use ML-KEM-768 prekey bundles to maintain forward secrecy even when your contact remains offline for weeks.
Field note
Messaging Layer Security MLS RFC 9420 vs LGS1 Protocol
A detailed technical comparison between the IETF Messaging Layer Security (MLS) tree-based ratchet and Livara's hybrid post-quantum LGS1 sender-key architecture.
News
Beyond Q-Day: What Quantum Hardware Milestones Mean for Daily Messaging
Recent quantum hardware milestones accelerate the Q-Day timeline. Here is why daily communications require hybrid post-quantum chat encryption today.
News
Beyond the App Store: How Malicious Chrome Extensions Read Messages and Hijack Web Messengers
Discover how rogue browser extensions hijack unencrypted DOM text in web messengers and learn how isolated Web Workers and offline integrity proofs neutralise browser-level threats.
News
Safety Numbers in Private Messaging: What Verification Proves
What a safety number checks, how to compare it through another channel, and why key changes, metadata and device compromise remain separate risks.
Field note
The End of the Password Hash: Why Messengers Demand a Zero Knowledge Password Proof
Traditional password hashes leave credentials vulnerable on servers. Discover how Secure Remote Password (SRP) protocols allow messengers to verify your identity without ever transmitting your password.
Field note
SIM Swap Vulnerabilities in Messaging: How Zero-Knowledge Proofs Stop Telco Hijacking
SIM swap attacks exploit mobile carrier weaknesses to steal account access. Learn how zero-knowledge SRP authentication decouples chat privacy from carrier trust.
News
Hybrid Post-Quantum Ratchet: ML-KEM-768 and P-256 in Daily Chat
Livara's LVR1 protocol pairs classical ECDH P-256 with ML-KEM-768. Discover how hybrid post quantum ratchets secure messaging without impacting mobile battery.
Field note
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