keyorigin.h raw

   1  // Copyright (c) 2019-present 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  
  11  struct KeyOriginInfo
  12  {
  13      unsigned char fingerprint[4]; //!< First 32 bits of the Hash160 of the public key at the root of the path
  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
  50