| 摘要 |
An object of the present invention is to define content, to be inserted into a payload of a message, as ASN 1 format in messages delivered between a distributed authorization center (DAC) and a centralized authorization center (CAC) in a renewable conditional access system (RCAS). Disclosed are an RCAS and a method for processing a request of the RCAS. A method for processing a request of an RCAS according to an embodiment of the present invention comprises the steps of: validating, by a DAC, a join request or a leave request transmitted from a set top box (STB); transmitting, by the DAC, a report message to a CAC when the validation has succeeded; updating, by the CAC, a database regarding a state of the STB based on the report message; and transmitting a certificate state update message including information about the update to DACs of one or more head-ends. |
