signet.h raw

   1  // Copyright (c) 2019-2021 The Limenka 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 LIMENKA_SIGNET_H
   6  #define LIMENKA_SIGNET_H
   7  
   8  #include <consensus/params.h>
   9  #include <primitives/block.h>
  10  #include <primitives/transaction.h>
  11  
  12  #include <optional>
  13  
  14  /**
  15   * Extract signature and check whether a block has a valid solution
  16   */
  17  bool CheckSignetBlockSolution(const CBlock& block, const Consensus::Params& consensusParams);
  18  
  19  /**
  20   * Generate the signet tx corresponding to the given block
  21   *
  22   * The signet tx commits to everything in the block except:
  23   * 1. It hashes a modified merkle root with the signet signature removed.
  24   * 2. It skips the nonce.
  25   */
  26  class SignetTxs {
  27      template<class T1, class T2>
  28      SignetTxs(const T1& to_spend, const T2& to_sign) : m_to_spend{to_spend}, m_to_sign{to_sign} { }
  29  
  30  public:
  31      static std::optional<SignetTxs> Create(const CBlock& block, const CScript& challenge);
  32  
  33      const CTransaction m_to_spend;
  34      const CTransaction m_to_sign;
  35  };
  36  
  37  #endif // LIMENKA_SIGNET_H
  38