JP6612899B2 - ブロードキャストチャネルを介したコンテンツ保護を可能にするための方法及び装置 - Google Patents
ブロードキャストチャネルを介したコンテンツ保護を可能にするための方法及び装置 Download PDFInfo
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Description
Claims (20)
- メディアライセンスを受信するための受信機としての装置であって、
保護される少なくとも一部を含むブロードキャストされたメディアデータを含む第1メッセージを受信し、暗号化されたライセンスデータを含む第2メッセージを受信する通信部と、
前記受信機のCDM(content decryption module)に対して前記メディアデータを識別するためのライセンスを指示する第3メッセージを生成するように要求し、
前記受信機のCDMよって生成された前記第3メッセージのハッシュを識別し、前記第2メッセージの1つ以上のハッシュコードを識別し、前記1つ以上のハッシュコードと前記第3メッセージのハッシュとの間のマッピングに基づいて前記受信機のための前記暗号化されたライセンスデータから前記ライセンスを識別する制御部と、
を含む装置。 - 前記制御部は、前記CDMからの前記第3メッセージの前記ハッシュを生成し、前記第3メッセージの前記ハッシュを前記1つ以上のハッシュコードのうち1つにマッチングさせ、前記受信機のための前記暗号化されたライセンスデータから前記ライセンスを前記マッチングされたハッシュコードに対応するものとして識別する、請求項1に記載の装置。
- 前記制御部は、前記受信機の個人キー(private key)を用いて前記暗号化されたライセンスデータを解読し、前記CDMが前記解読されたライセンスデータを用いて前記保護されたメディアデータにアクセスする、請求項1に記載の装置。
- 前記暗号化されたライセンスデータは、前記受信機の公開キー(public key)を用いて暗号化される、請求項1に記載の装置。
- 前記1つ以上のハッシュコードは、前記暗号化されたライセンスデータに対する前記受信機を指示する、請求項1に記載の装置。
- 前記第2メッセージは、前記第2メッセージのハッシュの長さを指示する第1フィールド、及び、前記第2メッセージの前記暗号化されたライセンスデータの長さを指示する第2フィールドをさらに含み、
前記第2メッセージのハッシュは、前記1つ以上のハッシュコードを指示する、請求項1に記載の装置。 - 前記第2メッセージは、前記受信機が前記第2メッセージを要求することなくサーバから受信される、請求項1に記載の装置。
- 前記暗号化されたライセンスデータは、リターンチャネルなしでブロードキャストチャネルを介して検索され、
前記受信機は、セットトップボックス又はテレビである請求項1に記載の装置。 - 受信機によってメディアライセンスを受信する方法であって、
保護される少なくとも一部を含むブロードキャストされたメディアデータを含む第1メッセージを受信する過程と、
暗号化されたライセンスデータを含む第2メッセージを受信する過程と、
前記受信機のCDM(content decryption module)に対して前記メディアデータを識別するためのライセンスを指示する第3メッセージを生成するように要求する過程と、
前記受信機のCDMによって生成された前記第3メッセージのハッシュを識別する過程と、
前記第2メッセージの1つ以上のハッシュコードを識別する過程と、
前記1つ以上のハッシュコードと前記第3メッセージのハッシュとの間のマッピングに基づいて前記受信機のための前記暗号化されたライセンスデータから前記ライセンスを識別する過程と、
を含む方法。 - 前記マッピングに基づいて前記受信機のための前記暗号化されたライセンスデータを識別する過程は、
前記CDMからの前記第3メッセージの前記ハッシュを生成する過程と、
前記第3メッセージの前記ハッシュを前記1つ以上のハッシュコードのうち1つにマッチングさせる過程と、
前記受信機のための前記暗号化されたライセンスデータから前記ライセンスを、前記マッチングされたハッシュコードに対応するものとして識別する過程と、
を含む請求項9に記載の方法。 - 前記受信機の個人キー(private key)を用いて前記暗号化されたライセンスデータを解読する過程と、
前記CDMが前記解読されたライセンスデータを用いて前記保護されたメディアデータにアクセスする過程と、
をさらに含む請求項9に記載の方法。 - 前記暗号化されたライセンスデータは、前記受信機の公開キー(public key)を用いて暗号化される、請求項9に記載の方法。
- 前記1つ以上のハッシュコードは、前記暗号化されたライセンスデータに対する前記受信機を指示する、請求項9に記載の方法。
- 前記第2メッセージは、前記第2メッセージのハッシュの長さを指示する第1フィールド、及び、前記第2メッセージの前記暗号化されたライセンスデータの長さを指示する第2フィールドをさらに含み、
前記第2メッセージのハッシュは、前記1つ以上のハッシュコードを指示する、請求項9に記載の方法。 - 前記第2メッセージは、前記受信機が前記第2メッセージを要求することなくサーバから受信される、請求項9に記載の方法。
- 前記暗号化されたライセンスデータは、リターンチャネルなしでブロードキャストチャネルを介して検索され、
前記受信機は、セットトップボックス又はテレビである請求項9に記載の方法。 - メディアライセンスを提供するためのサーバとしての装置であって、
制御部と、
暗号化されたライセンスデータに対する受信機を識別するために用いられる1つ以上のハッシュコードを指示する第1メッセージのハッシュ及び前記暗号化されたライセンスデータを含む前記第1メッセージを、前記受信機に送信する通信部と、を含み、
前記暗号化されたライセンスデータは、メディアデータを識別するためのライセンスを含み、
前記ライセンスは、前記受信機のCDM(content decryption module)によって生成された、前記ライセンスを指示する第2メッセージのハッシュと前記1つ以上のハッシュコードとの間のマッピングに基づいて識別される装置。 - 前記制御部は、前記第1メッセージを生成し、
前記通信部は、ブロードキャストサーバを介して、前記第1メッセージを前記受信機に送信し、
前記ブロードキャストサーバは、保護されるメディアデータを含む第3メッセージを前記受信機にブロードキャストし、
前記暗号化されたライセンスデータは、前記受信機が前記保護されるメディアデータにアクセスするために使用される、請求項17に記載の装置。 - 前記通信部は、ライセンシングサーバから前記第1メッセージを受信し、前記受信機に前記第1メッセージを送信し、
保護されるメディアデータを含む第3メッセージを前記受信機にブロードキャストし、
前記暗号化されたライセンスデータは、前記受信機が前記保護されるメディアデータにアクセスするために使用される、請求項17に記載の装置。 - 前記暗号化されたライセンスデータは、前記受信機の公開キー(public key)を用いて暗号化され、
前記メッセージは、前記メッセージのハッシュの長さを指示する第1フィールド、及び、前記メッセージの前記暗号化されたデータの長さを指示する第2フィールドをさらに含む請求項17に記載の装置。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201562175852P | 2015-06-15 | 2015-06-15 | |
US62/175,852 | 2015-06-15 | ||
US14/992,990 US10528707B2 (en) | 2015-06-15 | 2016-01-11 | Enabling content protection over broadcast channels |
US14/992,990 | 2016-01-11 | ||
PCT/KR2016/006280 WO2016204473A1 (en) | 2015-06-15 | 2016-06-14 | Method and apparatus for enabling content protection over broadcast channels |
Publications (2)
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FR3048538B1 (fr) * | 2016-03-03 | 2018-11-09 | Ingenico Group | Procede d'execution et de traitement de donnees, dispositif et programme d'ordinateur correspondant |
US11032589B1 (en) * | 2016-08-09 | 2021-06-08 | Google Llc | Methods, systems, and media for ensuring consumption of portions of media content |
US20180373847A1 (en) * | 2017-06-26 | 2018-12-27 | Qualcomm Incorporated | Broadcast DRM License Support for Receive Only Devices |
US11172268B2 (en) * | 2017-07-31 | 2021-11-09 | Samsung Electronics Co., Ltd. | Method and apparatus for providing broadcast service |
JP7389446B2 (ja) * | 2019-05-13 | 2023-11-30 | 株式会社I.Meisters | 暗号化/復号化装置、暗号化/復号化方法並びに該方法を実行するためのコンピュータプログラム |
WO2021178559A1 (en) * | 2020-03-03 | 2021-09-10 | Arris Enterprises Llc | Smart notification for over-the-top (ott) streaming among multiple devices |
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US10528707B2 (en) | 2020-01-07 |
EP3308551A4 (en) | 2018-05-30 |
CN107787493A (zh) | 2018-03-09 |
KR102534013B1 (ko) | 2023-05-18 |
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EP3308551B1 (en) | 2021-12-22 |
WO2016204473A1 (en) | 2016-12-22 |
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