Zero knowledge messaging. We cannot read your messages.
They're watching. Every message.
Hey, can you send me the account details?
10:42 AM
Sure, the password is Summer2024!
10:43 AM
Got it. What about the PIN?
10:44 AM
It's 4729. Don't share this with anyone.
10:45 AM
Without encryption, every keystroke is exposed.
Zero knowledge messaging, literallyzero
'Zero knowledge' gets thrown around a lot. Here's what it actually means inside NoChat's architecture.
Keys Generated On-Device
Identity, exchange, and session keys are generated in your browser or app via Web Crypto. Private keys are never transmitted anywhere.
Server Stores Ciphertext Only
The database holds encrypted message blobs, encrypted file references, and public keys. There is no plaintext and no decryption material.
Subpoena-Resistant by Math
We can't produce what we don't have. Under legal order we can only hand over encrypted blobs that nobody except the endpoints can decrypt.
Authenticated Encryption
AES-256-GCM ensures tampering is detected. Even a rogue server can't silently modify messages in flight.
Built on auditable, standards-based cryptography. How we secure it
Zero knowledge today.
Zero knowledge in 2040.
Classical zero knowledge isn't enough if captured ciphertext can be decrypted decades later. NoChat derives direct-message session keys through a hybrid X25519 + ML-KEM (Kyber-1024) exchange, so the zero knowledge guarantee holds against future quantum attackers too. Groups and calls are on the roadmap.
NIST Approved Standards
The same cryptography the US government will use
ML-KEM
Key encapsulation
ML-DSA
Digital signatures
Harvest Now, Decrypt Later
Why this matters today, not tomorrow
Nation states are already storing encrypted communications. When quantum computers arrive, they'll decrypt years of captured data instantly.
Most mainstream messengers — including WhatsApp and Telegram — still don't offer post-quantum messaging. NoChat ships post-quantum key exchange for your direct messages today.
zero knowledge messaging: questions, answered
Common zero knowledge messaging questions, answered plainly.
What is zero knowledge messaging?
How does NoChat achieve zero knowledge?
If NoChat gets hacked, are my messages exposed?
Is zero knowledge messaging the same as end-to-end encryption?
Can NoChat reset my account if I forget my password?
Does zero knowledge mean I can't use NoChat on multiple devices?
How can I verify NoChat is actually zero knowledge?
Does zero knowledge mean NoChat knows nothing at all?
Ready to go dark?
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Dispatches on private messaging
Reporting on encryption, anonymous messaging, and what it takes to build a secure messaging app with no phone number required.
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secure messaging app
NoChat is a secure messaging app with a zero-trust architecture: end-to-end encryption with post-quantum key exchange for direct messages, no phone number, no plaintext on our servers. Built on auditable standards.
Learn moreencrypted messaging app
NoChat is an encrypted messaging app with end-to-end encryption and post-quantum key exchange for direct messages. Anonymous sign-up, zero knowledge storage, no phone number required.
Learn morepost-quantum encryption messaging
Post-quantum encrypted messaging using ML-KEM (Kyber-1024) + AES-256-GCM. No phone number required. Protect DMs against harvest-now-decrypt-later attacks. Free, open source.
Learn moreJoin the quiet ones
Join a community that values privacy over convenience.
No phone number, no tracking ID
Sign up anonymously. There's no number to link your conversations back to you.
Encrypted on your device
Messages are sealed with AES-256-GCM before they leave your device. The server only ever sees ciphertext.
Verify, don't trust us
Built on open, standardized cryptography — no homegrown crypto. Verify our claims against public standards instead of taking our word for it.