Patent application number | Description | Published |
20110154042 | METHOD AND PROCESSING UNIT FOR SECURE PROCESSING OF ACCESS CONTROLLED AUDIO/VIDEO DATA - A method based on access conditions verification performed by two conditional access devices consecutively on a control message before releasing a control word to a descrambler. The control message encapsulates a second part including another control message. The processing unit for carrying out the method comprises a first conditional access device connected to a second conditional access device provided with a descrambler and a secured processor or secured hardware logic. The control message and the second part are each encrypted and accompanied by respectively first and second authentication data. The first conditional access device decrypts and verifies integrity of the control message, verifies the first access conditions and transmits the second part to the second access control device. The second conditional access device decrypts and verifies integrity of the second part and further verifies the second access conditions, and releases and loads the control word into the descrambler. | 06-23-2011 |
20120257749 | METHOD AND PROCESSING UNIT FOR SECURE PROCESSING OF ACCESS CONTROLLED AUDIO/VIDEO DATA - A method for verifying access conditions performed by two conditional access devices consecutively on a control message before releasing a control word to a descrambler. The control message includes a first part including first access conditions and a second part structured as a control message including at least second access conditions and a control word. A first conditional access device is configured for decrypting the control message with a common key specific to units having a first conditional access device and verifying the authenticity of said message. When the verification succeeds, the second part and a second right is transmitted to a second conditional access device, which decrypts the second part with a common key specific to units having a second conditional access device and verifies the authenticity of said second part and the second access conditions in relation to the second right encrypted by a personal key embedded therein. | 10-11-2012 |
20130103941 | METHOD FOR UPDATING DATA IN A SECURITY MODULE - A method for updating operating data in a security module associated to a user unit for processing digital data broadcast in a transport stream, said unit being connected to a conditional access system transmitting, in said transport stream, to the security module a first stream comprising management messages includes: broadcasting a second stream of operating data patch messages, adding to the first stream of management messages, a trigger message to direct the security module to a conditional access system transmitting a second stream transporting suitable operating data patch messages if a current version of the operating data in the security module requires an update, updating the operating data of the concerned security module with the operating data patch messages from the second stream, directing the security module towards the conditional access system transmitting another stream based on an identifier of the conditional access system in the security module. | 04-25-2013 |
20140330988 | MULTIPLE-SPEED INTERFACE - The present invention provides a security module having a communication interface being capable of operating according to any from a selection from a plurality of predetermined operation modes or communication protocols. The security module further comprises a voltage detector to detect the voltage on the module's power supply connection. Depending on the value of the detected voltage or to which of a plurality of predetermined voltage ranges the detected voltage may be categorized, the security module is made to function according to one from the plurality of predetermined communication protocols. According to an embodiment of the present invention the plurality of communication protocols require that the security module operate at a plurality of different frequencies | 11-06-2014 |
20140331072 | MULTIPLE-SPEED INTERFACE - The present invention provides a security module having a communication interface being capable of operating according to any from a selection from a plurality of predetermined operation modes or communication protocols. The security module further comprises a voltage detector to detect the voltage on the module's power supply connection. Depending on the value of the detected voltage or to which of a plurality of predetermined voltage ranges the detected voltage may be categorized, the security module is made to function according to one from the plurality of predetermined communication protocols. According to an embodiment of the present invention the plurality of communication protocols require that the security module operate at a plurality of different frequencies | 11-06-2014 |