JP2010220093A5

JP2010220093A5 - Broadcast receiving apparatus, transmitting apparatus, broadcasting system, and broadcast receiving method

Info

Publication number: JP2010220093A5
Application number: JP2009066886A
Authority: JP
Filing date: 2009-03-18
Publication date: 2012-05-10
Anticipated expiration: 2029-03-18

Description

上述の課題を解決するために、本発明は、送信装置から配信される暗号化されたコンテンツデータを受信し、端末機器から前記暗号化されたコンテンツデータを復号するための情報とを受信することにより、前記暗号化されたコンテンツデータを復号化して再生する放送受信装置であって、前記送信装置から配信される、コンテンツ鍵を用いて暗号化されたコンテンツデータと前記放送受信装置の受信機ＩＤを用いて暗号化された保護鍵とが多重化されたデータを受信する受信手段と、前記多重化されたデータから、暗号化されたコンテンツデータと暗号化された保護鍵とを分離する分離手段と、前記放送受信装置の受信機ＩＤを保存する受信機ＩＤ保存手段と、前記受信機ＩＤを用いて、前記暗号化された保護鍵から保護鍵を復号する暗号化保護鍵復号化手段と、前記端末機器から送信される暗号化されたコンテンツ鍵を受信する通信手段と、復号された保護鍵を用いて前記暗号化されたコンテンツ鍵を復号する暗号化コンテンツ鍵復号手段と、前記暗号化されたコンテンツデータを復号されたコンテンツ鍵によってコンテンツデータとして復号する暗号化コンテンツ復号化手段とを備え、復号されたコンテンツデータを再生する再生手段とを有することを特徴とする。 In order to solve the above problems, the present invention is to receive the information for receiving the encrypted content data distributed from the transmission device, for decrypting the encrypted content data from the terminal device Accordingly, a broadcast receiving apparatus for playback by decoding the encrypted content data are distributed from the transmission device, the receiver of the broadcast receiving apparatus and content data encrypted by using the content key Receiving means for receiving data multiplexed with a protection key encrypted using an ID, and separation for separating encrypted content data and encrypted protection key from the multiplexed data Means, receiver ID storing means for storing the receiver ID of the broadcast receiving apparatus, and encryption for decrypting a protection key from the encrypted protection key using the receiver ID A protection key decryption means, the encrypted content to decrypt communicate means that will receive the encrypted content key is sent, the encrypted content key using the protection key decrypted from the terminal device a key decrypting means, that it has a reproduction unit operable by encrypted decoded content data content key and an encrypted content decryption means for decrypting the content data, and reproduces the decrypted content data Features.

Claims

Receiving the encrypted contents data distributed from the transmission device, by receiving information for decrypting the encrypted content data from the terminal device decrypts the encrypted content data a broadcast receiver to re-live,
Receiving means for receiving content data distributed from the transmitting device and multiplexed with content data encrypted using a content key and a protection key encrypted using a receiver ID of the broadcast receiving device; ,
Separating means for separating the encrypted content data and the encrypted protection key from the multiplexed data;
Receiver ID storage means for storing the receiver ID of the broadcast receiving device;
An encryption protection key decryption means for decrypting a protection key from the encrypted protection key using the receiver ID;
Communicate means that will receive the encrypted content key transmitted from the terminal device,
An encrypted content key decrypting means for decrypting the encrypted content key using the decrypted protection key;
An encrypted content decrypting means for decrypting the encrypted content data as content data with a decrypted content key;
It broadcast receiving apparatus characterized by comprising a reproducing device for reproducing the decoded content data.

Before SL communications means, for receiving the encrypted content key, to the terminal device, the broadcast receiving apparatus according to claim 1, characterized in that a license request.

Receiving the encrypted contents data distributed from the transmission device, by receiving information for decrypting the encrypted content data from the terminal device decrypts the encrypted content data a broadcast receiver to re-live,
Receiving means for receiving content data distributed from the transmission device and multiplexed with content data encrypted using a content key and a protection key encrypted using a receiver ID of the broadcast receiving device When,
Separating means for separating the encrypted content data and the encrypted protection key from the multiplexed data;
Receiver ID storage means for storing the receiver ID of the broadcast receiving device;
An encryption protection key decryption means for decrypting a protection key from the encrypted protection key using the receiver ID;
And a protection key and the encrypted content data is the decoding and a communication unit that sends to the terminal device,
The terminal device decrypts the encrypted content key received from the transmission device using the decrypted protection key, and decrypts the encrypted content data using the decrypted content key. ,
Before SL communications means receives the decoded content data,
It broadcast receiving apparatus characterized by comprising a reproducing means for reproducing the decoded content data.

Before SL communications means, the broadcast receiving apparatus and the broadcast receiving apparatus according to claim 3, wherein only be transmitted and received readable encrypted communication Thus data with the terminal equipment.

5. The reception unit according to claim 1, wherein the reception unit is configured to receive a protection key encrypted using an EMM (Entitlement Management Message) from the transmission device. 6. Broadcast receiving device.

The broadcast according to any one of claims 1 to 5, wherein the receiving means receives data obtained by further multiplexing content supplementary information to the multiplexed data. Receiver device.

The encrypted content data is transmitted to the broadcast receiving device, and the encrypted content data is transmitted to the terminal device that transmits information for decrypting the encrypted content data to the broadcast receiving device. A transmission device for granting a license relating to a content key,
A content server for storing and storing a plurality of content data;
Content encryption means for encrypting content data using the content key;
Content key encryption means for encrypting the content key using a protection key;
Protection key encryption means for encrypting the protection key using a receiver ID for identifying the broadcast receiving device;
A multiplexing means for multiplexing the encrypted protection key and the encrypted content data; a transmission means for transmitting the multiplexed data to the broadcast receiving apparatus;
From the terminal device, along with the license request for transmission of the encrypted content key, and communication means that will receive terminal ID,
ID determination means for confirming whether the device is an unauthorized device based on the received terminal ID,
Only the terminal device is determined not to be illegitimate equipment, transmission device and transmits the license through the front Symbol communications means.

A transmission device that distributes encrypted content data, a broadcast reception device that receives the encrypted content data, and a terminal device that acquires information for decrypting the encrypted content data A broadcasting system,
The transmitter is
Content encryption means for encrypting content data using a content key;
Content key encryption means for encrypting the content key using a protection key;
Protection key encryption means for encrypting the protection key using a receiver ID for identifying the broadcast receiving device;
Transmitting means for multiplexing the encrypted protection key and the encrypted content data and transmitting the multiplexed content data to the broadcast receiving device;
ID determination means for confirming whether the device is an unauthorized device based on the terminal ID received from the terminal device;
The only and without the determined terminal device in unauthorized apparatus, and a communication unit that sends the encrypted content key,
The broadcast receiving device is:
Receiving means for receiving multiplexed data; and separating means for separating the encrypted protection key and the encrypted content data from the multiplexed data;
An encryption protection key decryption means for decrypting a protection key from the encrypted protection key using the receiver ID;
Terminal device is determined not to be illegitimate equipment by the ID determining means, a communication means that will receive sent come the encrypted content key as a license from the transmission device, storage means for storing the license And
The broadcast receiving device is:
And that communication means to receive the encrypted content key from the terminal device is determined not to be the illegitimate equipment,
Encrypted content key decryption means for decrypting a content key from the encrypted content key;
A broadcast system comprising: encrypted content decrypting means for decrypting content data from the encrypted content data.

An encrypted content key decrypting means for decrypting a content key from the encrypted content key; and an encrypted content decrypting means for decrypting content data from the encrypted content data. 9. The broadcasting system according to claim 8, wherein the encrypted content data and the decrypted protection key are transmitted from the broadcast receiving apparatus to the terminal device.

The broadcast receiving device receives the encrypted content data distributed from the transmitting device and receives the information for decrypting the encrypted content data transmitted from the terminal device. decoding the content data, a broadcast receiving method for reproducing the decrypted content data,
Data in which the broadcast receiving device is distributed from the transmitting device, the content data encrypted using the content key and the protection key encrypted using the receiver ID of the broadcast receiving device. Receiving the step,
Separating the encrypted content data and the encrypted protection key from the multiplexed data;
Decrypting a protection key from the encrypted protection key using a receiver ID stored in the broadcast receiver;
Receiving an encrypted content key from the terminal device;
Decrypting the encrypted content key using the decrypted protection key;
A step of decoding the previous SL encrypted content data using the decrypted content key,
It broadcast receiving method characterized by a step of reproducing the decoded content data.