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Creating multisig address with custom script using libbitcoin

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This commit is contained in:
Srdjan Obucina 2020-04-05 22:41:46 +02:00
parent 268edc904e
commit 3e901c264c
1 changed files with 78 additions and 8 deletions
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86
libraries/plugins/peerplays_sidechain/sidechain_net_handler_bitcoin.cpp
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@ -1317,17 +1317,87 @@ std::string sidechain_net_handler_bitcoin::create_multisig_address_psbt(const st
std::string sidechain_net_handler_bitcoin::create_multisig_address_standalone(const std::vector<std::pair<std::string, uint16_t>> &son_pubkeys) {
//using namespace libbitcoin;
//using namespace libbitcoin::chain;
//using namespace libbitcoin::machine;
//using namespace libbitcoin::wallet;
//
//uint32_t nrequired = son_pubkeys.size() * 2 / 3 + 1;
//point_list keys;
//for (auto son_pubkey : son_pubkeys) {
// keys.push_back(ec_public(son_pubkey.first));
//}
//script witness_script = script::to_pay_multisig_pattern(nrequired, keys);
//
//// sha256 of witness script
//data_chunk multisig_hash = to_chunk(sha256_hash(witness_script.to_data(0)));
//
//// redeem script
//libbitcoin::machine::operation::list redeemscript_ops{libbitcoin::machine::operation(opcode(0)), libbitcoin::machine::operation(multisig_hash)};
//script redeem_script = script(redeemscript_ops);
//
//// address
//payment_address address = payment_address(redeem_script, payment_address::testnet_p2sh);
//
//std::stringstream ss;
//
//
//ss << "{\"result\": {\"address\": \"" << address.encoded() << "\", \"redeemScript\": \"" << encode_base16(witness_script.to_data(0)) << "\"" << "}, \"error\":null}";
//std::string res = ss.str();
//
//std::cout << "Redeem Script Hash: " << encode_base16(address.hash()) << std::endl;
//std::cout << "Payment Address: " << address.encoded() << std::endl;
//std::cout << "Redeem Script: " << redeem_script.to_string(0) << std::endl;
//std::cout << "Witness Script: " << witness_script.to_string(0) << std::endl;
//std::cout << "Witness Script: " << encode_base16(witness_script.to_data(0)) << std::endl;
//
//std::cout << res << std::endl;
////create_multisig_address_psbt(son_pubkeys);
//
//return res;
using namespace libbitcoin;
using namespace libbitcoin::chain;
using namespace libbitcoin::machine;
using namespace libbitcoin::wallet;
uint32_t nrequired = son_pubkeys.size() * 2 / 3 + 1;
point_list keys;
libbitcoin::machine::operation::list witness_script_ops;
uint16_t idx = 0;
uint32_t total_weight = 0;
for (auto son_pubkey : son_pubkeys) {
keys.push_back(ec_public(son_pubkey.first));
ec_public key = ec_public(son_pubkey.first);
data_chunk key_data = to_chunk(key.point());
uint16_t weight = son_pubkey.second;
total_weight = total_weight + weight;
if (idx == 0) {
witness_script_ops.emplace_back(key_data);
witness_script_ops.emplace_back(opcode::checksig);
witness_script_ops.emplace_back(opcode::if_);
witness_script_ops.emplace_back(opcode::push_positive_1);
witness_script_ops.emplace_back(opcode::else_);
witness_script_ops.emplace_back(opcode::push_size_0);
witness_script_ops.emplace_back(opcode::endif);
} else {
witness_script_ops.emplace_back(opcode::swap);
witness_script_ops.emplace_back(key_data);
witness_script_ops.emplace_back(opcode::checksig);
witness_script_ops.emplace_back(opcode::if_);
witness_script_ops.emplace_back(opcode::push_positive_1);
witness_script_ops.emplace_back(opcode::add);
witness_script_ops.emplace_back(opcode::endif);
}
idx = idx + 1;
}
script witness_script = script::to_pay_multisig_pattern(nrequired, keys);
witness_script_ops.emplace_back(opcode::push_positive_11);
witness_script_ops.emplace_back(opcode::greaterthanorequal);
script witness_script = script(witness_script_ops);
std::cout << "Witness Script is valid: " << witness_script.is_valid() << std::endl;
std::cout << "Witness Script operations are valid: " << witness_script.is_valid_operations() << std::endl;
// sha256 of witness script
data_chunk multisig_hash = to_chunk(sha256_hash(witness_script.to_data(0)));
@ -1340,11 +1410,11 @@ std::string sidechain_net_handler_bitcoin::create_multisig_address_standalone(co
payment_address address = payment_address(redeem_script, payment_address::testnet_p2sh);
std::stringstream ss;
ss << "{\"result\": {\"address\": \"" << address.encoded() << "\", \"redeemScript\": \"" << encode_base16(witness_script.to_data(0)) << "\"" << "}, \"error\":null}";
ss << "{\"result\": {\"address\": \"" << address.encoded() << "\", \"redeemScript\": \"" << encode_base16(witness_script.to_data(0)) << "\""
<< "}, \"error\":null}";
std::string res = ss.str();
std::cout << "Redeem Script Hash: " << encode_base16(address.hash()) << std::endl;
std::cout << "Payment Address: " << address.encoded() << std::endl;
std::cout << "Redeem Script: " << redeem_script.to_string(0) << std::endl;