binary, EX_OR and hexidecimal calculations

I'm not sure if PHP can do this but I have a client that would like to provide unlock codes for a CD they have. They have given me a document that describes the Binary calculation that is required to calculate the unlock code based on the CD serial number. They also refer to EX/OR or exclusive or. The also refer to hex data which I'm assuming is hexidecimal which I'm pretty sure PHP can deal with. I'm interested in finding out if PHP can work with binary, ex/or and hexidecimal data. If not any other possible solution, ie. library or other language such as Perl. I would also appreciate any links to additional info. Thanks, Tom