From: Tom Trevethan <tom@commerceblock•com>
To: Bitcoin Protocol Discussion <bitcoin-dev@lists•linuxfoundation.org>
Subject: [bitcoin-dev] Blinded 2-party Musig2
Date: Wed, 26 Jul 2023 17:32:06 +0100 [thread overview]
Message-ID: <CAJvkSsft_z6s90oVnewmFU66hiURDHSvmGdmQETVJOW1C1xEyQ@mail.gmail.com> (raw)
In-Reply-To: <mailman.125690.1690381971.956.bitcoin-dev@lists.linuxfoundation.org>
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@moonsettler
Your scheme for blinding the challenge (e in your notation) works as far as
I can tell. It is better than the way I suggested as it doesn't require
modifying the aggregated pubkey (and the blinding nonce can be different
for each signature).
@AdamISZ and @Jonas
It is not necessarily the server that would need to verify that the
challenge is 'well formed', but the receiver of a statecoin. The concept of
having a blinded statechain server is that each signature generated for a
shared public key must be verified by the receiver of the corresponding
coin. So a receiver would retrieve the number of co-signings performed by
the server (K) and then verify each of the K signatures, and K transactions
that they have received from the sender. They can additionally verify that
each of the K R values has been correctly formed with a proof of secret
value for creating R2 (along with the R1 from the server).
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next parent reply other threads:[~2023-07-26 16:32 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.125690.1690381971.956.bitcoin-dev@lists.linuxfoundation.org>
2023-07-26 16:32 ` Tom Trevethan [this message]
2023-07-24 7:46 Tom Trevethan
2023-07-24 10:50 ` ZmnSCPxj
2023-07-24 14:25 ` Erik Aronesty
2023-07-24 16:08 ` Tom Trevethan
2023-07-24 15:57 ` Tom Trevethan
2023-07-24 14:12 ` Jonas Nick
2023-07-24 14:40 ` Erik Aronesty
2023-07-24 15:40 ` Jonas Nick
2023-07-24 16:51 ` AdamISZ
2023-07-25 14:12 ` Erik Aronesty
2023-07-25 16:05 ` Tom Trevethan
2023-07-26 4:09 ` Erik Aronesty
2023-07-26 17:40 ` Andrew Poelstra
2023-07-26 19:59 ` Jonas Nick
2023-07-26 20:35 ` Tom Trevethan
2023-07-26 22:06 ` Erik Aronesty
2023-07-27 2:54 ` Lloyd Fournier
2023-07-27 8:07 ` Jonas Nick
[not found] ` <CAJvkSsfa8rzbwXiatZBpwQ6d4d94yLQifK8gyq3k-rq_1SH4OQ@mail.gmail.com>
2023-07-27 13:25 ` [bitcoin-dev] Fwd: " Tom Trevethan
2023-08-07 0:55 ` [bitcoin-dev] " Tom Trevethan
2023-08-08 17:44 ` moonsettler
2023-08-09 15:14 ` Tom Trevethan
2023-08-10 3:30 ` Lloyd Fournier
2023-08-10 11:59 ` Tom Trevethan
2023-08-14 6:31 ` Lloyd Fournier
2023-08-30 10:52 ` Tom Trevethan
2023-07-24 15:39 ` Jonas Nick
2023-07-24 16:22 ` Tom Trevethan
2023-07-26 9:44 ` moonsettler
2023-07-26 14:59 ` Jonas Nick
2023-07-26 19:19 ` AdamISZ
2023-07-26 19:28 ` moonsettler
2023-07-27 5:51 ` AdamISZ
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