Cryptography – Electric signal modification – Having magnetic record carrier
Reexamination Certificate
2006-02-28
2010-02-16
Kim, Jung (Department: 2432)
Cryptography
Electric signal modification
Having magnetic record carrier
C713S168000, C336S229000, C347S214000
Reexamination Certificate
active
07664257
ABSTRACT:
An authentication method for authenticating an article in a device includes the steps of (a) reading an identification number stored on the article, (b) reading an authentication number stored on the article, (c) determining an input number based at least in part on the identification number, (d) applying an authentication function to the input number to calculate an output number, (e) determining that the article is authentic only if the authentication number corresponds to the output number, and (f) permitting use of the article in the device if the article is authentic, and disabling use of the article in the device if the article is not authentic.
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Hohberger Clive P.
Tsirline Boris Y.
Alston & Bird LLP
Kim Jung
Perungavoor Venkat
ZIH Corp.
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