Integrated circuit for digital rights management
View Patent ↗An ASIC for implementing digital rights management includes a processor for requesting encrypted digital data from a server and decrypting the data, and a player for transforming the decrypted data to analog signals. Preferably, the ASIC is tamper-resistant. Preferably, all the management code of the ASIC is stored on a ROM in the ASIC. A device for receiving, decrypting and displaying encrypted digital data includes the ASIC, and also a transceiver for communicating with the server, a display mechanism for displaying the analog signals, and a nonvolatile memory for storing the encrypted data. A system for storing and displaying digital data includes both the server and the device. Preferably, the server is configured to send to the device only the encrypted digital data and associated decryption keys.
1. A digital rights management method, comprising the steps of:
(a) storing encrypted digital data at a server;
(b) providing an integrated circuit that includes:
(i) a processor operative to:
(A) request said encrypted digital data from the server and
(B) decrypt said encrypted digital data, thereby providing decrypted digital data, and
(ii) a player operative to transform said decrypted digital data to analog signals;
(c) requesting said encrypted digital data from the server, by said processor;
(d) receiving said encrypted digital data, by said processor;
(e) storing said received encrypted digital data in a memory separate from said integrated circuit, by said processor;
(f) decrypting said received encrypted digital data, by said processor, thereby providing said decrypted digital data; and
(g) transforming said decrypted digital data to analog signals, by said player.
2. A digital rights management method, comprising the steps of:
(a) storing encrypted digital data at a server;
(b) providing an integrated circuit that includes:
(i) a processor operative to:
(A) request said encrypted digital data from the server and
(B) decrypt said encrypted digital data, using at least one key, thereby providing decrypted digital data, and
(ii) a player operative to transform said decrypted digital data to analog signals;
(c) requesting said encrypted digital data and said at least one key from the server, by said processor;
(d) storing said at least one key in a nonvolatile memory that is separate from said integrated circuit;
(e) decrypting said encrypted digital data, by said processor, thereby providing said decrypted digital data; and
(f) transforming said decrypted digital data to analog signals, by said player.
3. A digital rights management method comprising the steps of:
(a) storing encrypted digital data at a server;
(b) providing an integrated circuit that includes:
(i) a processor operative to:
(A) request said encrypted digital data from the server and
(B) decrypt said encrypted digital data, thereby providing decrypted digital data, and
(ii) a player operative to transform said decrypted digital data to analog signals;
(c) requesting said encrypted digital data from the server, by said processor;
(d) receiving said encrypted digital data from the server, by said processor;
(e) decrypting said encrypted digital data, by said processor, thereby providing said decrypted digital data; and
(f) transforming said decrypted digital data to analog signals, by said player;
wherein said decrypting and said transforming are effected only after all said encrypted digital data have been received from the server.