bb84 Messages

Status: Planned · Group: Identity & security

Private messages that stay private after Q-Day.

bb84 Messages encrypts wallet-to-wallet messages with ML-KEM, the NIST post-quantum key exchange. Messages recorded today can't be decrypted later by a quantum computer.

How it works: post-quantum messaging between wallets

1. Publish a key. Your ML-KEM public key is stored in your Quantum ID records, so others can find it by name.
2. Encrypt. The sender encapsulates a shared secret to your ML-KEM key and encrypts the message with it.
3. Deliver. Only the ciphertext travels or is stored. Nothing readable touches the chain.
4. Read. You decapsulate with your private key and read the message, in the wallet.

What it gives you

• ML-KEM key exchange
• Keys published in your Quantum ID
• Wallet-to-wallet addressing
• Encrypted files and secrets

Notes

• Harvest now, decrypt later is the threat: ML-KEM protects messages that are recorded today.
• The same scheme covers encrypted files and secrets.
• Senders are still identified by their wallet; ML-KEM protects the content.

Related

Quantum ID · bb84 Wallet · All products