musig.h

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// Copyright (c) 2024-present The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or https://www.opensource.org/licenses/mit-license.php.
 
#ifndef BITCOIN_MUSIG_H
#define BITCOIN_MUSIG_H
 
#include <pubkey.h>
 
#include <optional>
#include <vector>
 
struct secp256k1_musig_keyagg_cache;
 
using namespace util::hex_literals;
constexpr uint256 MUSIG_CHAINCODE{
    // Use immediate lambda to work around GCC-14 bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117966
    []() consteval { return uint256{"868087ca02a6f974c4598924c36b57762d32cb45717167e300622c7167e38965"_hex_u8}; }(),
};
 
 
 
bool GetMuSig2KeyAggCache(const std::vector<CPubKey>& pubkeys, secp256k1_musig_keyagg_cache& keyagg_cache);
std::optional<CPubKey> GetCPubKeyFromMuSig2KeyAggCache(secp256k1_musig_keyagg_cache& cache);
std::optional<CPubKey> MuSig2AggregatePubkeys(const std::vector<CPubKey>& pubkeys);
 
#endif // BITCOIN_MUSIG_H