Patent ID: 7761926

Claim:
An authentication data recording apparatus for recording data to a computer-readable storage medium, the authentication data recording apparatus comprising: a random pattern information detection part for detecting random pattern data from a read-only random pattern storage area of a computer-readable storage medium; an authentication data creation part for creating authentication data based on the random pattern data; and an authentication data recording part for recording the authentication data on an authentication data storage area on the computer-readable storage medium; wherein the computer-readable storage medium comprises the read-only random pattern storage area, the authentication data storage area, and a read/write user data storage area, and wherein the read-only random pattern area and the read/write user data storage area comprise distinct, nonoverlapping areas of the computer-readable storage medium, the read-only random pattern area being disposed outside the read/write user storage area, and wherein the read-only random pattern storage area comprises magnetized fibers randomly scattered on a random physical parameter of the computer-readable storage medium, and the authentication data is derived from the magnetized fibers random physical parameter.