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src/avalanche/delegationbuilder.cpp
- This file was added.
| // Copyright (c) 2020 The Bitcoin developers | |||||
| // Distributed under the MIT software license, see the accompanying | |||||
| // file COPYING or http://www.opensource.org/licenses/mit-license.php. | |||||
| #include <avalanche/delegationbuilder.h> | |||||
| #include <key.h> | |||||
| namespace avalanche { | |||||
| DelegationBuilder::DelegationBuilder(const Proof &p) | |||||
| : proofid(p.getId()), dgid(proofid) { | |||||
| levels.push_back({p.getMaster(), {}}); | |||||
| } | |||||
| bool DelegationBuilder::addLevel(const CKey &key, const CPubKey &master) { | |||||
| // Ensures that the private key provided is the one we need. | |||||
| if (levels.back().pubkey != key.GetPubKey()) { | |||||
| return false; | |||||
| } | |||||
| CHashWriter ss(SER_GETHASH, 0); | |||||
| ss << dgid; | |||||
| ss << master; | |||||
| auto hash = ss.GetHash(); | |||||
| if (!key.SignSchnorr(hash, levels.back().sig)) { | |||||
| return false; | |||||
| } | |||||
| dgid = DelegationId(hash); | |||||
| levels.push_back({master, {}}); | |||||
| return true; | |||||
| } | |||||
| Delegation DelegationBuilder::build() const { | |||||
| std::vector<Delegation::Level> dglvls; | |||||
| for (size_t i = 1; i < levels.size(); i++) { | |||||
| dglvls.push_back({levels[i].pubkey, levels[i - 1].sig}); | |||||
| } | |||||
| return Delegation(proofid, dgid, std::move(dglvls)); | |||||
| } | |||||
| } // namespace avalanche | |||||