The Machine PIN is derived from the computer-specific information. Not all the information type is present on all the computers. For example, the motherboard serial number is not present on all motherboards. The ArcotID PKI Client uses such machine characteristics available on the computer.
The following are the set of categories that are considered for generating the Machine PIN:
Physical memory size.
Boot partition volume ID.
BIOS information such as, serial number and manufacturer name. This information is not always present.
MAC addresses of all fixed Network Interface Cards (NIC). NICs that are not fixed, for example, PCMCIA, USB, docking station and NIC that is virtual, for example, VPN adapters are skipped. All other NICs are included. Adding or removing a NIC will cause Machine ID to change.
Motherboard information such as, the serial number and manufacturer name. This information is not always present.
Hard Disk (HD) information such as, model number and manufacturer’s name. This is not HD serial number and therefore it would be same for all identical HDs. The removable HDs such as external USB, memory cards, are not included. Only the fixed HDs are included and therefore adding or removing a HD will cause Machine ID to change.
Main Central Processing Unit (CPU) information such as, model and clock speed. For multiprocessor machine the information from all CPUs is included. This is not the CPU serial number.
Some computers, such as those manufactured by Dell, have their service tag encoded in the enclosure information.
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