Multisignature Outputs #85
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RFC to support shared ownership for two-party N-of-N multisignature outputs Describes the protocol for creating a multiparty bulletproof and commitment for multisignature outputs Requires a soft-fork due to changes in slate formatting incompatible with the current slate version
phyro
reviewed
Apr 17, 2022
| ``` | ||
| (multisig_key_b_pub, multisig_key_b_sec) = b.keychain().derive_key(multisig_key_id) | ||
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| part_commit_b = PedersenCommit(value, multisig_key_b_sec) |
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Is it possible for B to cancel the pubkey of A here? e.g.
part_commit_b = PedersenCommit(value, multisig_key_b_sec) - (part_commit_a - value*H)
or something similar? The attempt would be to create a commit_sum output that contains only the blinding factor of the party B. I'm not able to follow the bulletproof parts that follow because I'm not familiar with BPs, but perhaps the receiver could throw away the final bulletproof and simply construct the bulletproof alone since they know both values. This would also require B to also cancel the same key in the partial excess pubkey of B since A expects their private key to be a part of that.
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RFC to support shared ownership for two-party N-of-N multisignature outputs
Describes the protocol for creating a multiparty bulletproof and commitment for multisignature outputs
Requires a soft-fork due to changes in slate formatting incompatible with the current slate version
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