Authenticating pseudo-random code and apparatus

Details Authenticating pseudo-random code and apparatus Authenticating pseudo-random code and apparatus

G - Physics

07

D

354/236, 354/56,

G07D 13/00 (2006.01) G07D 7/20 (2006.01) G07F 7/08 (2006.01) G07F 7/12 (2006.01) G09C 5/00 (2006.01)

Patent

CA 1293805

ABSTRACT OF THE DISCLOSURE matrix code generating method generates a first predetermined code in binary form. A second step permutes the first determined code according to a non-linear feedback method described as pseudo-random. The code is segmented with linear segments positioned in a two dimensional matrix array. Apparatus generates and permutes the code, and segments the resultant code into matrix array from. Apparatus encrypts such information onto objects, photo- optically reads such encrypted information and deciphers the coded information.

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