note.md 894 B
note
coin is stream cipher encrypted with symmetric key key derived from shared key[^1].
key = hash(sharedSecret, ephemeralKey)
$sharedSecret = ephemeralSecret \mul publicKey$ where publicKey is recipient public key. based off diffie-hellman shared secret.
payment note
Note = (sn, value, tokenId, spendHook, data, blind^{value}, blind^{token}, memo)
| note | description |
|---|---|
| sn | serial number sampled at random |
| value | payment value |
| tokenId | token id |
| spendHook | coin related contract |
| data | data used by the coin contract |
| $blind^{value}$ | value commitment blinding term |
| $blind^{token}$ | token commitment blinding term |
| memo | arbitrary data |