1
0
mirror of https://github.com/bitcoinbook/bitcoinbook synced 2024-12-24 15:38:08 +00:00
bitcoinbook/code/addr.cpp
Andreas M. Antonopoulos aa332a7008 code examples
2014-09-28 11:52:50 -04:00

41 lines
1.3 KiB
C++

#include <bitcoin/bitcoin.hpp>
int main()
{
// Private secret key.
bc::ec_secret secret = bc::decode_hash(
"038109007313a5807b2eccc082c8c3fbb988a973cacf1a7df9ce725c31b14776");
// Get public key.
bc::ec_point public_key = bc::secret_to_public_key(secret);
std::cout << "Public key: " << bc::encode_hex(public_key) << std::endl;
// Create Bitcoin address.
// Normally you can use:
// bc::payment_address payaddr;
// bc::set_public_key(payaddr, public_key);
// const std::string address = payaddr.encoded();
// Compute hash of public key for P2PKH address.
const bc::short_hash hash = bc::bitcoin_short_hash(public_key);
bc::data_chunk unencoded_address;
// Reserve 25 bytes
// [ version:1 ]
// [ hash:20 ]
// [ checksum:4 ]
unencoded_address.reserve(25);
// Version byte, 0 is normal BTC address (P2PKH).
unencoded_address.push_back(0);
// Hash data
bc::extend_data(unencoded_address, hash);
// Checksum is computed by hashing data, and adding 4 bytes from hash.
bc::append_checksum(unencoded_address);
// Finally we must encode the result in Bitcoin's base58 encoding
assert(unencoded_address.size() == 25);
const std::string address = bc::encode_base58(unencoded_address);
std::cout << "Address: " << address << std::endl;
return 0;
}