A system and method are provided for generating a Short Term Key Message (STKM) for protection of a broadcast service being broadcasted to a terminal in a mobile broadcast system. The method includes transmitting, by a Broadcast Service Subscription Management (BSM) for managing subscription information, at least one key information for authentication of the broadcast service to a Broadcast Service Distribution/Adaptation (BSD/A) for transmitting the broadcast service, generating, by the BSD/A, a Traffic Encryption Key (TEK) for deciphering of the broadcast service in the terminal and inserting the TEK into a partially created STKM, and performing, by the BSD/A, Message Authentication Code (MAC) processing on the TEK-inserted STKM using the at least one key information, thereby generating a completed STKM.

A system and method are provided for generating a Short Term Key Message (STKM) for protection of a broadcast service being broadcasted to a terminal in a mobile broadcast system. The method includes transmitting, by a Broadcast Service Subscription Management (BSM) for managing subscription information, at least one key information for authentication of the broadcast service to a Broadcast Service Distribution/Adaptation (BSD/A) for transmitting the broadcast service, generating, by the BSD/A, a Traffic Encryption Key (TEK) for deciphering of the broadcast service in the terminal and inserting the TEK into a partially created STKM, and performing, by the BSD/A, Message Authentication Code (MAC) processing on the TEK-inserted STKM using the at least one key information, thereby generating a completed STKM.

Provided are an apparatus and a method for processing conditional access system (CAS)-based content. A method of operating a broadcast receiving apparatus includes: receiving a broadcast stream that includes content encrypted based on a CAS; extracting, from the received broadcast stream, CAS information for decrypting the encrypted content; receiving an entitlement control message (ECM) having a preset format based on the CAS information generated in a different format for each broadcasting business operator; and displaying the content decrypted based on the ECM.

A method for a seamless transfer of a secure multimedia conference session from one endpoint device to another without a need to rekey the session is provided. In this method, a first endpoint device connects a participant to a multimedia conference session to which at least one other participant is connected and based on detecting one or more second endpoint devices within a predetermined location proximity of the first endpoint device, determines whether to transfer the multimedia conference session to a target endpoint device. Based on determining that the session is to be transferred, the first endpoint device establishes a secure pairing connection directly with the target endpoint device and provides, via the secure pairing connection, information about the multimedia conference session based on which the multimedia conference session is transferred to the target endpoint device without rekeying the multimedia conference session.

The present technology relates to a transmission apparatus, a transmission method, a reception apparatus, and a reception method that make it possible to detect a watermark more easily. The transmission apparatus includes a generation section and a transmission section. The generation section generates watermark information for detecting a watermark. The transmission section transmits a broadcast signal including the watermark and the watermark information. When the transmission apparatus is provided, it enables the reception apparatus at a receiving end to detect the watermark more easily. The present technology is applicable, for example, to a transmission system including the transmission apparatus and the reception apparatus.

The present technology relates to a transmission apparatus, a transmission method, a reception apparatus, and a reception method that make it possible to detect a watermark more easily. The transmission apparatus includes a generation section and a transmission section. The generation section generates watermark information for detecting a watermark. The transmission section transmits a broadcast signal including the watermark and the watermark information. When the transmission apparatus is provided, it enables the reception apparatus at a receiving end to detect the watermark more easily. The present technology is applicable, for example, to a transmission system including the transmission apparatus and the reception apparatus.

An approach is disclosed for streaming content into a plurality of blobbers running on a blockchain storage platform. The streaming content is received, and the content is stored into a buffer. The buffered content is separated into fragments F (F1, F2, . . . , Fi, . . . , Fj . . . , Fn) where the each fragment Fi has a memory allocation different from other fragments Fj where j is not i while continuing to receive the streaming content until a blocking event occurs. Each fragment is split into a number of chunks determined by a fragment size divided by a chunk size. Each chunk is split into a fixed number of DABs where the number of DABs is the chunk size divided by the DAB size. A fixed Merkle tree is constructed suitable for sending to a number of blobbers for recording the DABs referenced by the leaf nodes of the fixed Merkle tree.

A digital broadcast receiving apparatus capable of executing a function with a higher added value is provided. A broadcast receiving apparatus configured to receive broadcasting data on digital broadcasting is used. The broadcast receiving apparatus includes: a broadcast receiving unit configured to receive broadcasting data containing coded video data regarding a broadcasting program of the digital broadcasting and control information for the broadcasting program; a video decoding unit configured to decode the coded video data received by the broadcast receiving unit to reproduce program video information; a display unit configured to display the program video information reproduced by the video decoding unit; a communication unit configured to transmit viewing permission request data to a predetermined portable information terminal in a case where a broadcasting program that a user of the broadcast receiving apparatus desires to view is a program on which viewing limit is to be imposed, the communication unit being configured to receive response data from the portable information terminal, the response data responding to the viewing permission request data; an authentication information storing unit configured to store terminal identification information and authentication information, the predetermined portable information terminal being allowed to be identified by the terminal identification information; and a control unit. The control unit is configured to: control the video decoding unit or the display unit so as not to limit viewing of the broadcasting program that the user of the broadcast receiving apparatus desires to view in a case where the response data received by the communication unit indicates a display permission response and both of terminal identification information and authentication information contained in the display permission response respectively coincide with the terminal identification information and the authentication information stored in the authentication information storing unit; and control the video decoding unit or the display unit so as to limit the viewing of the broadcasting program that the user of the broadcast receiving apparatus desires to view in a case where any of the terminal identification information and the authentication information contained in the display permission response does not coincide with corresponding one of the terminal identification information and the authentication information stored in the authentication information storing unit even though the response data received by the communication unit indicates the display permission response.

A digital broadcast receiving apparatus capable of executing a function with a higher added value is provided. A broadcast receiving apparatus configured to receive broadcasting data on digital broadcasting is used. The broadcast receiving apparatus includes: a broadcast receiving unit configured to receive broadcasting data containing coded video data regarding a broadcasting program of the digital broadcasting and control information for the broadcasting program; a video decoding unit configured to decode the coded video data received by the broadcast receiving unit to reproduce program video information; a display unit configured to display the program video information reproduced by the video decoding unit; a communication unit configured to transmit viewing permission request data to a predetermined portable information terminal in a case where a broadcasting program that a user of the broadcast receiving apparatus desires to view is a program on which viewing limit is to be imposed, the communication unit being configured to receive response data from the portable information terminal, the response data responding to the viewing permission request data; an authentication information storing unit configured to store terminal identification information and authentication information, the predetermined portable information terminal being allowed to be identified by the terminal identification information; and a control unit. The control unit is configured to: control the video decoding unit or the display unit so as not to limit viewing of the broadcasting program that the user of the broadcast receiving apparatus desires to view in a case where the response data received by the communication unit indicates a display permission response and both of terminal identification information and authentication information contained in the display permission response respectively coincide with the terminal identification information and the authentication information stored in the authentication information storing unit; and control the video decoding unit or the display unit so as to limit the viewing of the broadcasting program that the user of the broadcast receiving apparatus desires to view in a case where any of the terminal identification information and the authentication information contained in the display permission response does not coincide with corresponding one of the terminal identification information and the authentication information stored in the authentication information storing unit even though the response data received by the communication unit indicates the display permission response.

The present disclosure provides methods, devices, systems, and storage mediums for live broadcast detection and data processing. In one exemplary embodiments, a user terminal device cooperates with a server and a camera device in a live broadcast system. The terminal device turns towards the camera device and outputs detection content within a detection time. It can be determined whether live broadcast content uploaded/captured by the camera device includes the detection content captured by the camera device within the detection time. If the detection content is found in the live broadcast content, it can be determined that unauthorized live broadcasting exists. Accordingly, corresponding measures can be taken to stop the unauthorized live broadcasting in a timely manner, which helps improve the security of user information.