<?php
$hex = '800C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D';
echo hash('sha256', hex2bin
($hex)); $key = '0C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D';
$binKey = hex2bin($key);
$binKey = hex2bin(80).$binKey;
echo hash('sha256', $binKey);
PD9waHAKJGhleCA9ICc4MDBDMjhGQ0EzODZDN0EyMjc2MDBCMkZFNTBCN0NBRTExRUM4NkQzQkYxRkJFNDcxQkU4OTgyN0UxOUQ3MkFBMUQnOwplY2hvIGhhc2goJ3NoYTI1NicsIGhleDJiaW4oJGhleCkpOwoka2V5ID0gJzBDMjhGQ0EzODZDN0EyMjc2MDBCMkZFNTBCN0NBRTExRUM4NkQzQkYxRkJFNDcxQkU4OTgyN0UxOUQ3MkFBMUQnOwokYmluS2V5ID0gaGV4MmJpbigka2V5KTsKCiRiaW5LZXkgPSBoZXgyYmluKDgwKS4kYmluS2V5OwoKZWNobyBoYXNoKCdzaGEyNTYnLCAkYmluS2V5KTs=