US 8,894,485 B2Granted

Electronic gaming system with ROM-based media validation

AssigneeCadillac Jack

InventorsMarius Caldas, Marc McDermott, Ian Scott, Ted Ohnstad

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Abstract

Examples disclosed herein relate to systems and methods for validating the authenticity of one or more media associated with a gaming system. The systems and methods may utilize a public key in association with a ROM-based algorithm to validate such media. The systems and methods may: decrypt the encrypted game assets media signature; determine a verified game assets hash signature from the decrypted game assets media signature; determine a game assets verification range from the decrypted game assets media signature; calculate a game assets hash signature based on the game assets verification range; and/or determine if the game assets verified hash signature matches the game assets calculated hash signature.

Claims14

Dependent claims

An electronic gaming system comprising:

at least one read-only memory device, wherein said at least one read-only memory device stores a plurality of instructions;
at least one read/write memory device, wherein said at least one read/write memory device stores a first public key;
an operating system medium, wherein said operating system medium stores:
i) an operating system;
and
ii) an encrypted operating system medium signature;
at least one game assets media, wherein said at least one game assets media stores at least one game asset file;
a wager acceptor;
and
at least one processor configured to receive the plurality of instructions, which when executed by the at least one processor, cause the at least one processor to operate with the at least one read/write memory device, the operating system media, the at least one game assets media, and the wager acceptor to:
(a) determine if the first public key is able to decrypt the encrypted operating system medium signature;
(b) if the first public key is not able to decrypt the encrypted operating system medium signature, cause a display device to display a request to update the first public key and return to (a);
(c) decrypt the encrypted operating system medium signature;
(d) determine a verified hash signature from the decrypted operating system medium signature;
(e) determine a verification range from the decrypted operating system medium signature;
(f) calculate a hash signature based on the verification range;
(g) determine if the verified hash signature matches the calculated hash signature;
(h) if the verified hash signature does not match the calculated hash signature, prevent the wager acceptor from accepting a wager;
and
(i) if the verified hash signature does match the calculated hash signature, cause the at least one processor to receive a plurality of instructions from the operating system, which when executed by the at least one processor, cause the at least one processor to operate with the at least one read/write memory device, the operating system media, the at least one game assets media, and the wager acceptor to:
a. verify that the at least one game assets media is authentic;
b. if the at least one game assets media is determined to not be authentic, prevent the at least one game asset file from loading;
and
c. if the at least one game assets media is determined to be authentic, thereafter allow the wager acceptor to accept a wager.

21 more elements

An electronic gaming system comprising:

at least one read-only memory device, wherein said at least one read-only memory device stores a BIOS and a BIOS extension;
at least one read/write memory device, wherein said at least one read/write memory device stores a first public key;
an operating system medium, wherein said operating system medium stores:
i) an operating system;
and
ii) an encrypted operating system medium signature;
at least one processor configured to receive a first plurality of instructions from the BIOS, which when executed by the at least one processor, cause the at least one processor to operate with the at least one read/write memory device, the operating system media, and the wager acceptor to:
(a) begin a gaming system boot process;
(b) receive a plurality of instructions from the BIOS extension, which when executed by the at least one processor, cause the at least one processor to operate with the at least one read/write memory device, the operating system media, and the wager acceptor to:
i) determine if the first public key is able to decrypt the encrypted operating system medium signature;
ii) if the first public key is not able to decrypt the encrypted operating system medium signature, cause a display device to display a request to update the first public key and return to (b);
iii) decrypt the encrypted operating system medium signature;
iv) determine a verified hash signature from the decrypted operating system medium signature;
v) determine a verification range from the decrypted operating system medium signature;
vi) calculate a hash signature based on the verification range;
vii) determine if the verified hash signature matches the calculated hash signature;
viii) if the verified hash signature does not match the calculated hash signature, prevent the gaming system boot process from completing;
and
ix) if the verified hash signature does match the calculated hash signature, cause the at least one processor to receive a second plurality of instructions from the BIOS;
and
x) complete the gaming system boot process based on the second plurality of instructions from the BIOS.

18 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/845,980Filed 18 Mar 2013
Published: US 2014/0274364 A118 Sep 2014
Granted: 25 Nov 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

G07F 17/3241
For games, toys, sports, or amusements: security aspects of a gaming system, e.g. detecting cheating, device integrity, surveillance
G07F 17/3244
For games, toys, sports, or amusements: payment aspects of a gaming system, e.g. payment schemes, setting payout ratio, bonus or consolation prizes
G07F
Coin-freed or like apparatus