📅 Original date posted:2015-06-06
📝 Original message:Mark Friedenbach <mark at friedenbach.org> writes:
> Rusty, this doesn't play well with SIGHASH_SINGLE which is used in
> assurance contracts among other things. Sometimes the ordering is set by
> the signing logic itself...
Ah, I forgot about that particular wart. Yech. Implies that you can
order inputs or outputs, not both.
Something like "outputs must be in order, inputs which do not
CHECK(MULTI)SIG_(VERIFY) a SIGHASH_SINGLE sig must be in order with
respect to each other". But that's much less trivial since it implies
script evaluation.
In other news, I noticed Kristov Atlas's concurrent proposal just after
I posted this (via reddit). He used far more words, but didn't note
this issue either AFAICT.
Thanks!
Rusty.
Rusty Russell [ARCHIVE] /
npub1zw…hkhpx
2023-06-07 15:36:42
in reply to nevent1q…pqzl
Author Public Key
npub1zw7cc8z78v6s3grujfvcv3ckpvg6kr0w7nz9yzvwyglyg0qu5sjsqhkhpxPublished at
2023-06-07 15:36:42Event JSON
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"content": "📅 Original date posted:2015-06-06\n📝 Original message:Mark Friedenbach \u003cmark at friedenbach.org\u003e writes:\n\u003e Rusty, this doesn't play well with SIGHASH_SINGLE which is used in\n\u003e assurance contracts among other things. Sometimes the ordering is set by\n\u003e the signing logic itself...\n\nAh, I forgot about that particular wart. Yech. Implies that you can\norder inputs or outputs, not both.\n\nSomething like \"outputs must be in order, inputs which do not\nCHECK(MULTI)SIG_(VERIFY) a SIGHASH_SINGLE sig must be in order with\nrespect to each other\". But that's much less trivial since it implies\nscript evaluation.\n\nIn other news, I noticed Kristov Atlas's concurrent proposal just after\nI posted this (via reddit). He used far more words, but didn't note\nthis issue either AFAICT.\n\nThanks!\nRusty.",
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