Create a MuSig2 public nonce for the given participant.

Synopsis

Declared in <script/sign.h>

virtual
std::vector<uint8_t>
CreateMuSig2Nonce(
    SigningProvider const& provider,
    CPubKey const& aggregate_pubkey,
    CPubKey const& script_pubkey,
    CPubKey const& part_pubkey,
    uint256 const* leaf_hash,
    uint256 const* merkle_root,
    SigVersion sigversion,
    SignatureData const& sigdata) const override;

Return Value

The serialized public nonce, empty on failure.

Parameters

Name

Description

provider

The source of keys and MuSig2 session state.

aggregate_pubkey

The aggregate public key of the MuSig2 group.

script_pubkey

The output key the aggregate key is tweaked to.

part_pubkey

The participant public key generating the nonce.

leaf_hash

The tapleaf hash for a script path spend, or null.

merkle_root

The Taproot merkle root, or null for a key path spend.

sigversion

The signature serialization version to use.

sigdata

Signature data providing context for the input.

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