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// Copyright (c) 2019-2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_SCRIPT_KEYORIGIN_H
#define BITCOIN_SCRIPT_KEYORIGIN_H
#include <serialize.h>
#include <vector>
struct KeyOriginInfo
{
unsigned char fingerprint[4]; //!< First 32 bits of the Hash160 of the public key at the root of the path
std::vector<uint32_t> path;
friend bool operator==(const KeyOriginInfo& a, const KeyOriginInfo& b)
{
return std::equal(std::begin(a.fingerprint), std::end(a.fingerprint), std::begin(b.fingerprint)) && a.path == b.path;
}
friend bool operator<(const KeyOriginInfo& a, const KeyOriginInfo& b)
{
// Compare the fingerprints lexicographically
int fpr_cmp = memcmp(a.fingerprint, b.fingerprint, 4);
if (fpr_cmp < 0) {
return true;
} else if (fpr_cmp > 0) {
return false;
}
// Compare the sizes of the paths, shorter is "less than"
if (a.path.size() < b.path.size()) {
return true;
} else if (a.path.size() > b.path.size()) {
return false;
}
// Paths same length, compare them lexicographically
return a.path < b.path;
}
SERIALIZE_METHODS(KeyOriginInfo, obj) { READWRITE(obj.fingerprint, obj.path); }
void clear()
{
memset(fingerprint, 0, 4);
path.clear();
}
};
#endif // BITCOIN_SCRIPT_KEYORIGIN_H
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