ec_secret wif_to_secret(const std::string& wif)
{
data_chunk decoded;
if (!decode_base58(decoded, wif))
return ec_secret();
// 1 marker, 32 byte secret, optional 1 compressed flag, 4 checksum bytes
if (decoded.size() != 1 + hash_size + 4 &&
decoded.size() != 1 + hash_size + 1 + 4)
return ec_secret();
if (!verify_checksum(decoded))
return ec_secret();
// Check first byte is valid
if (decoded[0] != payment_address::wif_version)
return ec_secret();
// Checks passed. Drop the 0x80 start byte and checksum.
decoded.erase(decoded.begin());
decoded.erase(decoded.end() - 4, decoded.end());
// If length is still 33 and last byte is 0x01, drop it.
if (decoded.size() == 33 && decoded[32] == (uint8_t)0x01)
decoded.erase(decoded.begin()+32);
ec_secret secret;
BITCOIN_ASSERT(secret.size() == decoded.size());
std::copy(decoded.begin(), decoded.end(), secret.begin());
return secret;
}
ec_secret minikey_to_secret(const std::string& minikey)
{
if (!check_minikey(minikey))
return ec_secret();
return sha256_hash(to_data_chunk(minikey));
}
