Embodiments of the present invention are directed to a computer-implemented method for author verification and authorization of object code. In one embodiment, program object code is linked with a plurality of data blocks to create linked object code and a MAP file. Thereafter, author verification is performed by executing a plurality of comparisons between the linked object code and the MAP file. In another embodiment, a digital signing procedure is performed on linked object code by creating a signature data block. The signature data block is then encrypted and written to the linked object code to create digitally-signed object code. In another embodiment, an application program embodied in linked object code generates a data packet. The data packet is then compared to a previously-generated signature data packet from the linked object code to determine if the linked object code is authorized.