H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 9/00 (2006.01) A63F 9/24 (2006.01) G06F 1/00 (2006.01) G06F 21/00 (2006.01) G06Q 50/00 (2006.01) G07F 17/32 (2006.01) H04L 9/32 (2006.01) G06F 19/00 (2006.01)
Patent
CA 2225805
An electronic casino gaming system includes an unalterable ROM for storing a casino game authentication program, including a message digest algorithm program, a decryption program and a decryption key. A casino game data set containing casino game rules and image data is stored in a mass storage device, such as a local disk memory or a remote network file server, along with the signature of the casino game data set. The signature is an encrypted version of the message digest of the casino game data set, prepared using a hash function. Prior to permitting game play by a player, the casino game data set is transferred from the mass storage device to main memory and during this process the message digest is computed from the image data using a hash function stored in the ROM. The encrypted version of the message digest transferred from the mass storage device is decrypted using the decryption program and decryption key stored in the unalterable ROM. The two message digests are then compared for a match: if a match exists, game play is permitted; if a match does not exist, game play is prohibited. The authentication procedure is also used to check all casino game software, both programs and fixed data sets, stored in any memory devices distributed throughout the system, such as the system boot ROM, NVRAM and all sub-system memory devices. The authentication procedure is run whenever a particular program or fixed data set is scheduled for use by the system, and also at periodic intervals and on demand.
Ce système de jeux pour casino est formé de plusieurs composants, dont un microprocesseur (12), une unité de mémoire centrale (13) qui est typiquement une mémoire à accès sélectif, un système d'initialisation de mémoire ROM (14). Ce système comprend également une mémoire RAM (17) rémanente, une unité de disques en chargeur (18), un sous-système disques (19) et un bus Information de Commande du Protocole (PCI) (20). Le sous-système disques (19) soutient de préférence l'interface pour minisystèmes informatiques-2 (SCSI-2) avec des options rapide et large. Ce système comprend également un sous-système vidéo (22) qui est couplé au bus PCI (20) pour fournir des images à l'arrêt en pleine couleur et des films Groupe d'Experts pour le Codage d'Images (MPEG).
Alcorn Allan E.
Barnett Michael
Giacalone Louis D. Jr.
Levinthal Adam E.
Gowling Lafleur Henderson Llp
Igt
Silicon Gaming Inc.
LandOfFree
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