Good morning Stepan, These are very good developments and I applaud them.
> Vending machine generates an ephemeral key `k` and corresponding ephemeral > node id `K`. It generates an invoice signed with this key. It also includes a > routing information that the payment should go through our online node `N`. > As a preimage we use `hmac-sha256(x, amount)` where `x` is a secret key from > ECDH(K, N) - (x-coordinate of `k * N`). We also put the amount into the > 8-byte short channel id in the routing information to ensure that the node > can calculate the preimage even if the user is willing to pay a tip and > increases the amount of the htlc. Just to be clear: each time the vending node needs a new invoice, it generates a new ephemeral key `k`? Regards, ZmnSCPxj _______________________________________________ Lightning-dev mailing list Lightning-dev@lists.linuxfoundation.org https://lists.linuxfoundation.org/mailman/listinfo/lightning-dev
