Rusty Russell [ARCHIVE] on Nostr: 📅 Original date posted:2018-07-12 📝 Original message: DING FENG <dingfeng12345 ...

📅 Original date posted:2018-07-12
📝 Original message:
DING FENG <dingfeng12345 at gmail.com> writes:
> Hi,
>
> I'm a junior developer and a bitcoin user.
> And I have read this thread carefully.
>
> I'm very worried about "SIGHASH_NOINPUT".
>
> Because "SIGHASH_NOINPUT" looks will be widely used, and it makes reuse
> address more dangerous.

No.

A wallet should *never* create a SIGHASH_NOINPUT to spend its own UTXOs.
SIGHASH_NOINPUT is useful for smart contracts which have unique
conditions, such as a pair of peers rotating keys according to an agreed
schedule (eg. lightning).

Cheers,
Rusty.