About DigitalNote crypto messages:
3. Message is encrypted with recipient`s private key (tracking key as an option in next XDN messages version). Even the sender can`t decrypt it. He can remember, but not decrypt.
Isn't the message encrypted with recipient's public key, so s/he can decrypt it with the corresponding private key?
We use a symmetric stream cipher.
Message decryption process uses recipient`s private key data.
You are speaking about asymmetric cipher, like RSA, etc.