/**
* get the plain public key for the current BIP32 key
*
* @return string
*/
public function publicKey()
{
// if this is a BIP32 Private key then we first build the public key
// that way it will be cached nicely
if (!$this->path->isPublicPath()) {
return $this->buildKey($this->path->publicPath())->publicKey();
} else {
if (is_null($this->publicKey)) {
$this->publicKey = BIP32::extract_public_key($this->tuple());
}
return $this->publicKey;
}
}
public function testIsParentOf()
{
$ok = ["M/9999'/0" => ["M/9999'/0/0", "M/9999'/0/1", "M/9999'/0/0", "M/9999'/0/1", "M/9999'/0/0'"], "m/9999'/0" => ["m/9999'/0/0", "m/9999'/0/1", "m/9999'/0/0", "m/9999'/0/1"]];
foreach ($ok as $p => $cs) {
foreach ($cs as $c) {
$this->assertTrue(BIP32Path::path($p)->isParentOf(BIP32Path::path($c)), "parent[{$p}] child[{$c}]");
}
}
$fail = ["M/9999'/0" => ["M/9999'/0", "m/9999/0'/0", "M/9999/0'/0", "M/999'/0/1"], "m/999'/0" => ["m/999'/0", "M/999'/0/0", "m/9999'/0/0", "m/9999'/0/1", "m/9999'/0/0", "m/9999'/0/1"]];
foreach ($fail as $p => $cs) {
foreach ($cs as $c) {
$this->assertFalse(BIP32Path::path($p)->isParentOf(BIP32Path::path($c)), "parent[{$p}] child[{$c}]");
}
}
}
/**
* signs a raw transaction
*
* @param $rawTransaction
* @param $inputs
* @return array
*/
protected function signTransaction($rawTransaction, $inputs)
{
$wallet = [];
$keys = [];
$redeemScripts = [];
foreach ($inputs as $input) {
//create private keys for signing
$path = BIP32Path::path($input['path'])->privatePath();
$keys[] = $this->primaryPrivateKey->buildKey($path);
$keys[] = $this->backupPrivateKey->buildKey($path->unhardenedPath());
$redeemScripts[] = $input['redeemScript'];
}
//add the keys and redeem scripts to a wallet to sign the transaction with
BIP32::bip32_keys_to_wallet($wallet, array_map(function (BIP32Key $key) {
return $key->tuple();
}, $keys));
RawTransaction::redeem_scripts_to_wallet($wallet, $redeemScripts);
return RawTransaction::sign($wallet, $rawTransaction, json_encode($inputs));
}
/**
* sign a raw transaction with the private keys that we have
*
* @param string $raw_transaction
* @param array[] $inputs
* @return array response from RawTransaction::sign
* @throws \Exception
*/
protected function signTransaction($raw_transaction, array $inputs)
{
$wallet = [];
$keys = [];
$redeemScripts = [];
foreach ($inputs as $input) {
$redeemScript = null;
$key = null;
if (isset($input['redeemScript'], $input['path'])) {
$redeemScript = $input['redeemScript'];
$path = BIP32Path::path($input['path'])->privatePath();
$key = $this->primaryPrivateKey->buildKey($path);
$address = $this->getAddressFromKey($key, $path);
if ($address != $input['address']) {
throw new \Exception("Generated address does not match expected address!");
}
} else {
throw new \Exception("No redeemScript/path for input");
}
if ($redeemScript && $key) {
$keys[] = $key;
$redeemScripts[] = $redeemScript;
}
}
BIP32::bip32_keys_to_wallet($wallet, array_map(function (BIP32Key $key) {
return $key->tuple();
}, $keys));
RawTransaction::redeem_scripts_to_wallet($wallet, $redeemScripts);
return RawTransaction::sign($wallet, $raw_transaction, json_encode($inputs));
}
protected static function BIP32Path(array $path)
{
return BIP32Path::path(array_values(array_filter($path, function ($v) {
return $v !== null;
})));
}
