Amusement devices: games – Including means for processing electronic data – Data storage or retrieval
Reexamination Certificate
2007-04-10
2007-04-10
Hotaling, II, John M. (Department: 3714)
Amusement devices: games
Including means for processing electronic data
Data storage or retrieval
C463S025000, C463S020000, C463S029000
Reexamination Certificate
active
10458846
ABSTRACT:
A method and apparatus for authenticating gaming machine software is disclosed. In one embodiment the method and apparatus is used to authenticate the contents of a removable media. Use of a removable media provides means to store large amounts of software on a single media to install software, perform software updates, diagnose gaming machines, authenticate software, or configure gaming machines. An authentication file may contain a listing of each file on the removable media and an associated hash value calculated with a hash function. The hash values are calculated and stored in an authentication file and encryption of the one or more hash values may occur. A hash value re-calculation is performed on each file at a later time to determine the hash value at the time of use. The re-calculated hash values are compared to the decrypted hash values stored in the authentication file.
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Benbrahim Jamal
Chen Xuedong
LeMay Steven G.
Harper Tramar
Hotaling II John M.
IGT
Marshall & Gerstein & Borun LLP
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