ML-KEM-768 for Messaging: FIPS 203, Hybrid Keys and Limits
What ML-KEM-768 does in a messenger, why a hybrid design also uses P-256, and which security questions FIPS 203 does not answer.
Guide
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
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Crypto Agility in Messaging: Why Versioned Protocols Matter
Cryptographic algorithms evolve, so secure messengers need protocols that can be inspected, tested, versioned, and upgraded without hiding important decisions behind vague security claims.
Field note
The Disappearing Message Myth: Why UI Timers Fail Without Cryptographic Key Shredding
UI timers hide messages from your screen, but unencrypted payloads linger in flash storage. Discover why cryptographic key shredding is the only mathematically sound path to secure file deletion in messaging.
News
The Ex-Member's Ghost: Group Chat Eviction Security and LGS1
When an encrypted group chat kicks out a member, cached encryption keys can leave future messages exposed. Here is how LGS1 enforces instant backward secrecy.
News
Beyond the Envelope: How Encrypted Media Storage Works Without Server Knowledge
Discover how zero-knowledge media storage separates content keys from ciphertext blobs, protecting attachments in an encrypted file transfer messenger without server exposure.
Comparison
Harvest Now, Decrypt Later: What It Means for Private Messaging
A practical explanation of stored ciphertext, future quantum risk, hybrid key establishment, and what post-quantum messaging cannot protect.
Field note
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