Bitcoin Core  22.99.0
P2P Digital Currency
keyorigin.h
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1 // Copyright (c) 2019-2020 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
5 #ifndef BITCOIN_SCRIPT_KEYORIGIN_H
6 #define BITCOIN_SCRIPT_KEYORIGIN_H
7 
8 #include <serialize.h>
9 #include <vector>
10 
12 {
13  unsigned char fingerprint[4];
14  std::vector<uint32_t> path;
15 
16  friend bool operator==(const KeyOriginInfo& a, const KeyOriginInfo& b)
17  {
18  return std::equal(std::begin(a.fingerprint), std::end(a.fingerprint), std::begin(b.fingerprint)) && a.path == b.path;
19  }
20 
21  friend bool operator<(const KeyOriginInfo& a, const KeyOriginInfo& b)
22  {
23  // Compare the fingerprints lexicographically
24  int fpr_cmp = memcmp(a.fingerprint, b.fingerprint, 4);
25  if (fpr_cmp < 0) {
26  return true;
27  } else if (fpr_cmp > 0) {
28  return false;
29  }
30  // Compare the sizes of the paths, shorter is "less than"
31  if (a.path.size() < b.path.size()) {
32  return true;
33  } else if (a.path.size() > b.path.size()) {
34  return false;
35  }
36  // Paths same length, compare them lexicographically
37  return a.path < b.path;
38  }
39 
40  SERIALIZE_METHODS(KeyOriginInfo, obj) { READWRITE(obj.fingerprint, obj.path); }
41 
42  void clear()
43  {
44  memset(fingerprint, 0, 4);
45  path.clear();
46  }
47 };
48 
49 #endif // BITCOIN_SCRIPT_KEYORIGIN_H
KeyOriginInfo::operator<
friend bool operator<(const KeyOriginInfo &a, const KeyOriginInfo &b)
Definition: keyorigin.h:21
KeyOriginInfo::SERIALIZE_METHODS
SERIALIZE_METHODS(KeyOriginInfo, obj)
Definition: keyorigin.h:40
KeyOriginInfo::clear
void clear()
Definition: keyorigin.h:42
READWRITE
#define READWRITE(...)
Definition: serialize.h:147
KeyOriginInfo::operator==
friend bool operator==(const KeyOriginInfo &a, const KeyOriginInfo &b)
Definition: keyorigin.h:16
serialize.h
KeyOriginInfo::path
std::vector< uint32_t > path
Definition: keyorigin.h:14
KeyOriginInfo::fingerprint
unsigned char fingerprint[4]
First 32 bits of the Hash160 of the public key at the root of the path.
Definition: keyorigin.h:13
KeyOriginInfo
Definition: keyorigin.h:11