function _openid_dh_xorsecret

_openid_dh_xorsecret($shared, $secret)

File

modules/openid/openid.inc, line 518

OpenID utility functions.

Code

function _openid_dh_xorsecret($shared, $secret) {
  $dh_shared_str = _openid_dh_long_to_binary($shared);
  $sha1_dh_shared = sha1($dh_shared_str, TRUE);
  $xsecret = "";
  for ($i = 0; $i < strlen($secret); $i++) {
    $xsecret .= chr(ord($secret[$i]) ^ ord($sha1_dh_shared[$i]));
  }

  return $xsecret;
}