| Patent application number | Description | Published |
|---|
| 20080263198 | Device and method using non-cycle accurate measurements for discovering emulated clients - A method for discovering emulated clients. A verifier sends a cryptographic challenge C to a client and preferably starts a timer. The client uses a deterministic key search algorithm to find the correct key and returns the result as a number of tries needed. The verifier then stops the timer if this was started and verifies that the result is correct and preferably that the response was timely. Also provided is a verifier. | 10-23-2008 |
| 20090070584 | Method for Providing, Distributing and Engraving Digital Data and Associated Distribution Server - The invention relates to a method for engraving digital data received from a remote server. The inventive method consists in acquiring an identifier of a secured disc used for receiving digital data, in transmitting the identifier and a digital data loading instruction to the remote server, in receiving digital date scrambled by at least one second encryption key and second encryption keys by a first encryption key and in engraving scrambled digital data and the second encryption keys on the secured disc. A providing and distributing methods and a distribution server are also disclosed. | 03-12-2009 |
| 20090240938 | Device, System and Method for Service Delivery with Anti-Emulation Mechanism - A method for service delivery to a client, in which the client selects a service, and establishes a connection with a system server to which it sends an identity associated with the client and an identifier of the service. The system server verifies that the client is authorised to access to the service and that the client is non-emulated. If this is verified, the service is provided to the client. In a preferred embodiment, the service is scrambled content and the system server provides a descrambling key to the client, and instructs a content server to provide the scrambled content to the client. Also claimed are a device, a system, and a system server. | 09-24-2009 |
| 20100070756 | DEVICE AND METHOD FOR DIGITAL PROCESSING MANAGEMENT OF CONTENT SO AS TO ENABLE AN IMPOSED WORK FLOW - A device receives protected content and a license for the content, unprotects the content using an input key and retrieves a rule associated with the input key. The device then processes the content to create new content, retrieves at least one output key associated with the input key in the retrieved rule, protects the content using the output key and sends the newly protected content and the corresponding license. It is thus possible to impose a work flow as it is necessary for a device to store a particular key in order to access the content and as the rule imposes a particular output key depending on the input key. In a preferred embodiment, the content is scrambled using a symmetrical key that is encrypted by an asymmetrical key in the license. An alternate embodiment uses watermarking techniques instead of encryption. The invention finds particular use in video processing. | 03-18-2010 |
| 20110078239 | Detecting client software versions - A method for detecting a version of a client software in a network. A server receives a first request from the client software, sends a first response comprising a first challenge to the client software, receives a second request comprising an answer to the first challenge from the client software, and detects the version of the client software from at least the second request. The answer to the challenge is dependent on the version of the client software and is expressed as a modification to a communication protocol used for the first and the second request. Also provided are a server, a client and a computer program product. | 03-31-2011 |
| 20110093561 | SYSTEM, SHARING NODE,SERVER, AND METHOD FOR CONTENT DISTRIBUTION - A system for distribution of a content item in a network, particularly a peer-to-peer network. A requesting node sends a request for the content item. An access requirement value for the content item is compared to a counter value for the requesting node to determine if the requesting node may download the content item from a sharing node. The counter value is advantageously linked to the requesting node's habit of sharing content items. The access requirement value, which preferably is not only linked to the size of the content item, is modified for at least one content item in the network, either following a time rule or when the content is downloaded. In this way it can be ensured that initial downloaders are likely to share the content item and that the content then gets more accessible to other nodes. Also provided are a sharing node, a server and a method. | 04-21-2011 |
