š
Original date posted:2020-03-10
š Original message:
Good morning Rusty, et al.,
> Note that this means no payment secret is necessary, since the incoming
> `blinding` serves the same purpose. If we wanted to, we could (ab)use
> payment_secret as the first 32-bytes to put in Carol's enc1 (i.e. it's
> the ECDH for Carol to decrypt enc1).
I confess to not reading everything in detail, but it seems to me that, with payment point + scalar and path decorrelation, we need to establish a secret with each hop anyway (the blinding scalar for path decorrelation), so if you need a secret per hop, possibly this could be reused as well?
Regards,
ZmnSCPxj
ZmnSCPxj [ARCHIVE]
npub1g5ā¦3ms3l
2023-06-09 12:59:16 UTC
in reply to nevent1qā¦88hs
Author Public Key
npub1g5zswf6y48f7fy90jf3tlcuwdmjn8znhzaa4vkmtxaeskca8hpss23ms3lPublished at
2023-06-09 12:59:16 UTCEvent JSON
{
"id": "f9fa8d129361ef443b8f678f94a145868ebb1bf7a6069971ac7ac8a0e04711af",
"pubkey": "4505072744a9d3e490af9262bfe38e6ee5338a77177b565b6b37730b63a7b861",
"created_at": 1686315556,
"kind": 1,
"tags": [
[
"e",
"bdf43e4bc08687232ed81714c7a2374ed959a034fef2fe272a2bb53b5a09849b",
"",
"root"
],
[
"e",
"bf3c4f2549efa4fef1641c9bdab4c38d9803953492d52e46b401f72a45d70e57",
"",
"reply"
],
[
"p",
"13bd8c1c5e3b3508a07c92598647160b11ab0deef4c452098e223e443c1ca425"
]
],
"content": "š
Original date posted:2020-03-10\nš Original message:\nGood morning Rusty, et al.,\n\n\n\u003e Note that this means no payment secret is necessary, since the incoming\n\u003e `blinding` serves the same purpose. If we wanted to, we could (ab)use\n\u003e payment_secret as the first 32-bytes to put in Carol's enc1 (i.e. it's\n\u003e the ECDH for Carol to decrypt enc1).\n\nI confess to not reading everything in detail, but it seems to me that, with payment point + scalar and path decorrelation, we need to establish a secret with each hop anyway (the blinding scalar for path decorrelation), so if you need a secret per hop, possibly this could be reused as well?\n\nRegards,\nZmnSCPxj",
"sig": "4b113bdfc20f215535e07efd414c3e6dad2ddaed376beb35ad65877b86fe5034085d2e944ce6b633dcb5761fb42408798072aa292f27c3566feecdf7a1217b7a"
}