/**
* Perform Octet-String-to-Integer Conversion.
*
* Defined in SEC 1 section 2.3.8.
*
* @param OctetString $os
* @return Integer
*/
public static function octetStringToInteger(OctetString $os)
{
$num = gmp_import($os->string(), 1, GMP_MSW_FIRST | GMP_BIG_ENDIAN);
return new Integer(gmp_strval($num, 10));
}
