public function testValidatePublicKey()
{
$cnt = (getenv('BITCOINLIB_EXTENSIVE_TESTING') ?: 1) * 2;
for ($i = 0; $i < $cnt; $i++) {
$set = BitcoinLib::get_new_key_set($this->addressVersion);
$this->assertTrue(BitcoinLib::validate_public_key($set['pubKey']));
}
}
/**
* Check Bitcoin Public Key
*
* Passes the input to the BitcoinLib library which tries to create
* a valid point on the secp256k1 curve.
*
* @param string $str
* @return boolean
*/
public function check_bitcoin_public_key($str)
{
return \BitWasp\BitcoinLib\BitcoinLib::validate_public_key($str);
}
public static function import($ext_key)
{
$hex = BitcoinLib::base58_decode($ext_key);
$key = [];
$key['magic_bytes'] = substr($hex, 0, 8);
$magic_byte_info = self::describe_magic_bytes($key['magic_bytes']);
// Die if key type isn't supported by this library.
if ($magic_byte_info == false) {
throw new \InvalidArgumentException("Unsupported magic byte");
}
$key['type'] = $magic_byte_info['type'];
$key['testnet'] = $magic_byte_info['testnet'];
$key['network'] = $magic_byte_info['network'];
$key['version'] = $magic_byte_info['version'];
$key['depth'] = gmp_strval(gmp_init(substr($hex, 8, 2), 16), 10);
$key['fingerprint'] = substr($hex, 10, 8);
$key['i'] = substr($hex, 18, 8);
$key['address_number'] = self::get_address_number($key['i']);
$key['chain_code'] = substr($hex, 26, 64);
$key['is_compressed'] = true;
if ($key['type'] == 'public') {
$key_start_position = 90;
$offset = 66;
} else {
$key_start_position = 92;
$offset = 64;
}
$key['key'] = substr($hex, $key_start_position, $offset);
if (!in_array($key['type'], ['public', 'private'])) {
throw new \InvalidArgumentException("Invalid type");
}
// Validate obtained key
if ($key['type'] == 'public' && !BitcoinLib::validate_public_key($key['key'])) {
throw new \InvalidArgumentException("Invalid public key");
}
if ($key['type'] == 'private' && !self::check_valid_hmac_key($key['key'])) {
throw new \InvalidArgumentException("Invalid private key");
}
return $key;
}