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BIP 373: add MuSig2 PSBT Fields BIP

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Ava Chow
2024-01-15 14:07:56 -05:00
parent 6b9138c1a1
commit 806b8b886f
3 changed files with 283 additions and 0 deletions
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bip-0174.mediawiki
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@@ -483,6 +483,52 @@ The currently defined per-input types are defined as follows:
| 0, 2
| [[bip-0371.mediawiki|371]]
|-
| MuSig2 Participant Public Keys
| <tt>PSBT_IN_MUSIG2_PARTICIPANT_PUBKEYS = 0x1a</tt>
| <33 byte plain aggregate pubkey>
| The MuSig2 aggregate plain public key from the <tt>KeyAgg</tt> algorithm. This key may or may not
be in the script directly (as x-only). It may instead be a parent public key from which the public keys in the
script were derived.
| <tt><33 byte compressed pubkey>*</tt>
| A list of the compressed public keys of the participants in the MuSig2 aggregate key in the order
required for aggregation. If sorting was done, then the keys must be in the sorted order.
|
|
| 0, 2
| [[bip-0373.mediawiki|373]]
|-
| MuSig2 Public Nonce
| <tt>PSBT_IN_MUSIG2_PUB_NONCE = 0x1b</tt>
| <tt><33 byte compressed pubkey> <33 byte plain pubkey> <32 byte hash or omitted></tt>
| The compressed public key of the participant providing this nonce, followed by the plain public
key the participant is providing the nonce for, followed by the BIP 341 tapleaf hash of
the Taproot leaf script that will be signed. If the aggregate key is the taproot internal key or the
taproot output key, then the tapleaf hash must be omitted. The plain public key must be
the key found in the script and not the aggregate public key that it was derived from, if it was
derived from an aggregate key.
| <tt><66 byte public nonce></tt>
| The public nonce produced by the <tt>NonceGen</tt> algorithm.
|
|
| 0, 2
| [[bip-0373.mediawiki|373]]
|-
| MuSig2 Participant Partial Signature
| <tt>PSBT_IN_MUSIG2_PARTIAL_SIG = 0x1c</tt>
| <tt><33 byte compressed pubkey> <33 byte plain pubkey> <32 byte hash or omitted></tt>
| The compressed public key of the participant providing this partial signature, followed by the
plain public key the participant is providing the signature for, followed by the BIP 341 tapleaf hash
of the Taproot leaf script that will be signed. If the aggregate key is the taproot internal key or
the taproot output key, then the tapleaf hash must be omitted. Note that the plain public key must
be the key found in the script and not the aggregate public key that it was derived from, if it was
derived from an aggregate key.
| <tt><32 byte partial signature></tt>
| The partial signature produced by the <tt>Sign</tt> algorithm.
|
|
| 0, 2
| [[bip-0373.mediawiki|373]]
|-
| Proprietary Use Type
| <tt>PSBT_IN_PROPRIETARY = 0xFC</tt>
| <tt><compact size uint identifier length> <bytes identifier> <compact size uint subtype> <bytes subkeydata></tt>
@@ -599,6 +645,20 @@ determine which outputs are change outputs and verify that the change is returni
| 0, 2
| [[bip-0371.mediawiki|371]]
|-
| MuSig2 Participant Public Keys
| <tt>PSBT_OUT_MUSIG2_PARTICIPANT_PUBKEYS = 0x08</tt>
| <33 byte plain aggregate pubkey>
| The MuSig2 aggregate plain public key from the <tt>KeyAgg</tt> algorithm. This key may or may not
be in the script directly. It may instead be a parent public key from which the public keys in the
script were derived.
| <tt><33 byte compressed pubkey>*</tt>
| A list of the compressed public keys of the participants in the MuSig2 aggregate key in the order
required for aggregation. If sorting was done, then the keys must be in the sorted order.
|
|
| 0, 2
| [[bip-0373.mediawiki|373]]
|-
| Proprietary Use Type
| <tt>PSBT_OUT_PROPRIETARY = 0xFC</tt>
| <tt><compact size uint identifier length> <bytes identifier> <compact size uint subtype> <bytes subkeydata></tt>