/**
* @see https://github.com/bitpay/bitcore/blob/master/test/test.util.js
*/
public function testTwoSha256()
{
$data = array(array('907c2bc503ade11cc3b04eb2918b6f547b0630ab569273824748c87ea14b0696526c66ba740200000000fd1f9bdd4ef073c7afc4ae00da8a66f429c917a0081ad1e1dabce28d373eab81d8628de80200000000ad042b5f25efb33beec9f3364e8a9139e8439d9d7e26529c3c30b6c3fd89f8684cfd68ea0200000000599ac2fe02a526ed040000000008535300516352515164370e010000000003006300ab2ec2291fe51c6f', '60d8ec2b9241235914528efcc7b32315062d78c8dc12e09bbfdd4cb00563be5b'));
foreach ($data as $datum) {
$this->assertSame($datum[1], Util::twoSha256($datum[0]));
}
}
/**
* Generates a Service Identification Number (SIN), see:
* https://en.bitcoin.it/wiki/Identity_protocol_v1
*
* @return SinKey
* @throws \Exception
*/
public function generate()
{
if (is_null($this->publicKey)) {
throw new \Exception('Public Key has not been set');
}
$compressedValue = $this->publicKey;
if (empty($compressedValue)) {
throw new \Exception('The Public Key needs to be generated.');
}
$step1 = Util::sha256(Util::binConv($compressedValue), true);
$step2 = Util::ripe160($step1);
$step3 = sprintf('%s%s%s', self::SIN_VERSION, self::SIN_TYPE, $step2);
$step4 = Util::twoSha256(Util::binConv($step3), true);
$step5 = substr(bin2hex($step4), 0, 8);
$step6 = $step3 . $step5;
$this->value = Base58::encode($step6);
return $this;
}