JP2011239454A - プログラム・コンテンツを安全に通信するための技術 - Google Patents
プログラム・コンテンツを安全に通信するための技術 Download PDFInfo
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Abstract
【解決手段】第2機器が認証された後、第1機器は第2機器に保護されたコンテンツを、それに関連する権利ファイルと一緒に転送する。権利ファイルは第2機器がその保護されたコンテンツを使用するための権利を、その安全保障を示す安全保障レベルに基づいて規定する。これらの権利は、たとえば第2機器が後ほどその保護されたコンテンツを他の機器へ転送できる回数、第2機器がその保護されたコンテンツを再生できる期間等に関する。第2機器の安全保障レベルが高ければ高いほど、より多くの権利がそれに許容される。実際、第2機器は保護されたコンテンツを受け取り保持するためには最小安全保障レベル要求を満たす必要がある。
【選択図】図1
Description
本出願は米国特許出願シリアル番号10/894,884号、2004年7月20日出願の一部継続出願であり、当該出願は此処に参照することにより全て組み込まれている。
本発明は広く多層権利構造の概念を包含し、先に十分に説明した保護コンテンツの不正使用を防止するための信頼されたドメインを含む。本発明は、確かにこの構成の中で使用された特定機器(たとえば、SDVR STT、PMD等)に限定されるものではない。実際、CableCARDに接続されたホストSTT DVRを、本発明の構造の中で先に説明したSDVR STT(たとえば158−1)で置き換え、同様の機能を実行させることは記述されていない。この実施例において、上記のSDVR STTの機能は、単純にホストSTT DVR機器およびCableCARDの間で分割される。
図17はそのような1つの代用ホストSTT DVRであり、1703で表され、1705で表された多元ストリームCableCARD(multi−stream CableCARD:「M−CARD」)に接続されている。M−CARD1705は多元ストリーム、たとえばネットワーク150からのMPEG−2プログラム・ストリームを処理することが可能で、ホストSTT DVR機器1703と動作するように構成されており、この機器はこの事例ではインタフェース1707内に多重チューナを含み、これは複数のプログラム・ストリームをそれぞれ搬送する異なる搬送派周波数に同時に同期する。この図示を目的とした実施例では、一般的にホストDVR機器1703上記のSDVR STTの全ての機能を仮定しているが、但したとえばコンテンツ暗号化鍵(たとえば、先に述べた3DES鍵)の生成、下記のコンテンツ管理情報(content management information(CMI))の処理、機器1703内に先に格納されているコンテンツへのアクセス制御(たとえば、再生、コピー、保管など)は除き、それらの機能は此処ではM−CARD1705へ移動されている。格納されているコンテンツ・ファイルへのアクセスはM−CARD1705で制御されるが、ホストSTT DVR機器1703はコンテンツ・ファイルの暗号化と復号化の責任を有する。M−CARD1705はまた、従来技術によるCableCARDで要求される従来機能をも実行する。SDVR STTの機能を機器1703とM−CARD1705に分割するため、上記SDVR STT機能を実現するための、機器1703とM−CARD1705との間の通信が此処での関心事となる。
Claims (88)
- 1つの機器へプログラム・コンテンツを転送するための方法であって:
機器の安全保障の程度がそれに対して割り当てられた指標で示されているところの前記機器から、それへのプログラム・コンテンツの転送要求を受け取り;
前記要求に応答して、前記機器が前記プログラム・コンテンツを受け取る正当性を判定するために前記機器を認証し;
前記機器が認証された後、前記機器へ前記プログラム・コンテンツと前記プログラム・コンテンツに関連する一式の規則であって、該一式の規則の少なくともいくつかは前記指標に関係し且つ前記プログラム・コンテンツの使用に関して前記機器で適用可能である、前記一式の規則とを転送することを含む、前記方法。 - 請求項1記載の方法において、前記機器は機器により与えられるデジタル証明書内のデータを確認して認証される前記方法。
- 請求項1記載の方法において、プログラム・コンテンツが映画コンテンツを含む、前記方法。
- 請求項1記載の方法が更に、前記プログラム・コンテンツが機器に転送される前に、指標で示される前記機器の安全保障の程度が、一式の規則の或る1つに適合するか否かを判定する、前記方法。
- 請求項4記載の方法において、指標で示される前記機器の安全保障の程度が、一式の規則の或る1つに適合することが判定された後に、プログラム・コンテンツが転送される、前記方法。
- 請求項1記載の方法において、一式の規則の1つが前記機器が前記プログラム・コンテンツを他の機器へ転送できる回数に関する、前記方法。
- 請求項1記載の方法において、一式の規則の1つが前記機器が前記プログラム・コンテンツを再生できる期間に関する、前記方法。
- 請求項1記載の方法において、一式の規則の1つが前記機器がプログラム・コンテンツを別の機器へ転送する権利を、前記機器の安全保証の程度の関数として規定する、前記方法。
- 機器の間でプログラム・コンテンツを転送するための方法であって:
第1保護層を定義し、前記第1保護層内の機器はプログラム・コンテンツを、第1処理プロセスに準拠する他の機器へ相互に転送し;
第2保護層を定義し、第1保護層内の第1機器が、第2処理プロセスに準拠する前記第2保護層内の第2機器に、選択されたプログラム・コンテンツを転送することを含み、此処で前記第2処理プロセスが:
第2機器を認証して、前記第2機器が前記選択されたプログラム・コンテンツを受け取る正当性を有するか否かを判定し、前記第2機器にはその安全保障の程度を示す指標が割り当てられており;
前記第2機器が認証された後、第2機器に選択されたプログラム・コンテンツとその選択されたプログラム・コンテンツに関連する一式の規則とを転送し、一式の規則の少なくともいくつかは前記指標に関連し且つ選択されたプログラム・コンテンツの使用に関して前記第2機器で適用可能である、ことを含む、前記方法。 - 請求項9記載の方法において、前記第1機器が選択されたプログラム・コンテンツを広帯域通信ネットワークから受信するためのセットトップ端末を含む、前記方法。
- 請求項10記載の方法において、前記広帯域通信ネットワークがケーブル・ネットワークを含む、前記方法。
- 請求項11記載の方法において、前記規則一式がケーブル・ネットワークの運用者により制定される、前記方法。
- 請求項9記載の方法において、前記規則一式が選択されたプログラム・コンテンツの提供者により制定される、前記方法。
- 請求項9記載の方法において、前記第2機器が前記第2機器から提供されるデジタル証明書内のデータを確認することで認証される、前記方法。
- 請求項9記載の方法において、前記選択されたプログラム・コンテンツが映画コンテンツを含む、前記方法。
- 請求項9記載の方法が更に、前記選択されたプログラム・コンテンツが機器に転送される前に、指標で示される前記第2機器の安全保障程度が一式の規則の或る1つに適合するか否か判定することを含む、前記方法。
- 請求項16記載の方法において、前記指標で示される前記第2機器の安全保障の程度が、或る規則に適合したと判定された後に、前記プログラム・コンテンツが転送される、前記方法。
- 請求項9記載の方法において、前記一式の規則の1つが、前記第2機器が前記選択されたプログラム・コンテンツを他の機器へ転送できる回数に関する、前記方法。
- 請求項9記載の方法において、前記一式の規則の1つが、前記第2機器が前記選択されたプログラム・コンテンツを再生できる期間に関する、前記方法。
- 請求項9記載の方法において、前記一式の規則の1つが前記第2機器が前記選択されたプログラム・コンテンツを別の機器へ転送する権利を、前記他の機器の安全保障の程度の関数として規定する、前記方法。
- 保護コンテンツを受信するための機器内で使用するための方法であって:
前記機器の安全保障の程度を示す指標を格納し;
前記保護コンテンツの前記機器への転送要求を1つの装置に送り;
前記装置に、該装置から前記保護コンテンツを受信する機器の正当性を検証するためのデータを提供し;
前記装置から保護コンテンツと、該保護コンテンツに関係する一式の規則を受け取り、前記一式の規則の少なくともいくつかは前記指標に関連し且つ前記保護コンテンツの使用に関して前記機器で適用可能である、前記方法。 - 請求項21記載の方法において、前記装置が前記プログラム・コンテンツを広帯域通信ネットワークから受信するための、セットトップ端末を含む、前記方法。
- 請求項22記載の方法において、前記広帯域通信ネットワークがケーブル・ネットワークを含む、前記方法。
- 請求項23記載の方法において、前記規則一式がケーブル・ネットワークの運用者により制定される、前記方法。
- 請求項21記載の方法において、前記規則一式が保護コンテンツの提供者により制定される、前記方法
- 請求項21記載の方法において、前記データがデジタル証明書に含まれる、前記方法。
- 請求項21記載の方法において、前記保護コンテンツが映画コンテンツを含む、前記方法。
- 請求項21記載の方法において、前記一式の規則の1つが、前記機器が前記選択されたプログラム・コンテンツを他の機器へ転送できる回数に関する、前記方法。
- 請求項21記載の方法において、前記一式の規則の1つが、前記機器が前記選択されたプログラム・コンテンツを再生できる期間に関する、前記方法。
- 請求項21記載の方法において、前記一式の規則の1つが、前記機器が前記選択されたプログラム・コンテンツを別の機器へ転送する権利を、前記他の機器の安全保障の程度の関数として規定する、前記方法。
- 暗号化され、機器内の記憶装置に格納されているプログラム・コンテンツを有する前記機器に接続可能なモジュール装置内で使用するための方法であって:
前記機器から前記プログラム・コンテンツへの接続要求を受け取り、該要求は前記記憶装置内の暗号化されたプログラム・コンテンツに関連して格納されたデータ・パッケージを含み;
前記要求に応答して、前記機器が前記プログラム・コンテンツへのアクセスを許されているかを、第1データ・パッケージ内の情報に基づいて判定し;
前記機器に、少なくとも前記記憶装置内の暗号化されたプログラム・コンテンツを復号化するための暗号法要素に関するデータを提供し、これにより前記機器に前記プログラム・コンテンツへのアクセスを提供することを含む前記方法。 - 請求項31記載の方法において、前記情報が前記プログラム・コンテンツへアクセスする権利に関する、前記方法。
- 請求項32記載の方法において、前記権利が前記プログラム・コンテンツを再生する権利を含む、前記方法。
- 請求項32記載の方法において、前記権利が前記プログラム・コンテンツを記録する権利を含む、前記方法。
- 請求項32記載の方法において、前記暗号法要素が1つの暗号化鍵を含む、前記方法。
- 請求項35記載の方法において、前記データが前記暗号化鍵の暗号化された版を表す、前記方法。
- 請求項35記載の方法において、前記データ・パッケージが前記暗号化鍵の暗号化された版を表すデータを含む、前記方法。
- 記憶装置を有し、モジュール装置に接続可能な1つの機器内で使用するための方法であって:
前記モジュール装置に選択されたプログラム・コンテンツを記録するための要求を送り;
前記モジュール装置から前記要求に対する返答を受け取り、該返答は暗号法要素に関するデータ、該暗号法要素の少なくとも1つの版を含むデータ・パッケージ、および前記選択されたプログラム・コンテンツに関連する、少なくとも1つの安全保障測度に基づいた、前記機器が前記選択されたプログラム・コンテンツの記録を許されているか否かの判定結果を含み;
前記判定結果に基づき、前記選択されたプログラム・コンテンツを記録し;
前記記録されたプログラム・コンテンツを前記データから導出された暗号化法要素で暗号化し;
前記暗号化されたプログラム・コンテンツを前記データ・パッケージと関連して前記記憶装置内に格納する、以上を含む前記方法。 - 請求項38記載の方法において、前記暗号化法要素が1つの暗号化鍵を含む、前記方法。
- 請求項38記載の方法において、前記データが暗号化鍵の暗号化された版を表す、前記方法。
- 請求項38記載の方法において、前記機器がまた該機器に関連する安全保障レベルに基づいて前記選択されたプログラム・コンテンツの記録を許可される、前記方法。
- 請求項39記載の方法において、前記暗号化法要素の版が暗号化鍵の暗号化版を含む、前記方法。
- 請求項38記載の方法が更に、選択されたプログラム・コンテンツを通信ネットワークから受信することを含む、前記方法。
- 請求項43記載の方法において、通信ネットワークがケーブル・ネットワークを含む、前記方法。
- 1つの機器へプログラム・コンテンツを転送するための装置であって:
機器の安全保障の程度がそれに対して割り当てられた指標で示されているところの前記機器から、それへのプログラム・コンテンツの転送要求を受け取るためのインタフェースと;
前記要求に応答して、前記機器が前記プログラム・コンテンツを受け取る正当性を判定するために前記機器を認証するための機構と;
前記機器が認証された後、前記機器へ前記プログラム・コンテンツと前記プログラム・コンテンツに関連する一式の規則であって、一式の規則の少なくともいくつかは前記指標に関係し且つ前記プログラム・コンテンツの使用に関して前記機器で適用可能である、前記一式の規則とを転送するようにプログラムされたプロセッサとを含む、前記装置。 - 請求項45記載の装置において、前記機構が前記機器を該機器により与えられるデジタル証明書内のデータを確認して認証する前記装置。
- 請求項45記載の装置において、プログラム・コンテンツが映画コンテンツを含む、前記装置。
- 転送される前に、指標で示される前記機器の安全保障の程度が、一式の規則の或る1つに適合するか否かを判定される、前記装置。
- 請求項48記載の装置において、前記指標で示される前記機器の安全保障の程度が、或る規則に適合することが判定された後に、プログラム・コンテンツが転送される、前記装置。
- 請求項45記載の装置において、一式の規則の1つが、前記機器が前記プログラム・コンテンツを他の機器へ転送できる回数に関する、前記装置。
- 請求項45記載の装置において、一式の規則の1つが、前記機器が前記プログラム・コンテンツを再生できる期間に関する、前記装置。
- 請求項45記載の装置において、一式の規則の1つが、前記機器がプログラム・コンテンツを別の機器へ転送する権利を、前記機器の安全保証の程度の関数として規定する、前記装置。
- 機器の間でプログラム・コンテンツを転送するためのシステムであって:
第1保護層内の、プログラム・コンテンツを第1処理プロセスに準拠する他の機器へ相互に転送するための機器と;
第1保護層内の、第2処理プロセスに準拠する前記第2保護層内の第2機器に、選択されたプログラム・コンテンツを転送する、前記第2処理プロセスを実行するようにプログラムされた第1機器を含み、此処で前記第2処理プロセスが:
前記第2機器が前記選択されたプログラム・コンテンツを受け取る正当性を有するか否かを判定し、前記第2機器にはその安全保障の程度を示す指標が割り当てられており;
前記第2機器が認証された後、第2機器に選択されたプログラム・コンテンツとその選択されたプログラム・コンテンツに関連する一式の規則とを転送し、一式の規則の少なくともいくつかは前記指標に関連し且つ選択されたプログラム・コンテンツの使用に関して前記第2機器で適用可能である、ことを含む、前記システム。 - 請求項53記載のシステムにおいて、前記第1機器が選択されたプログラム・コンテンツを広帯域通信ネットワークから受信するためのセットトップ端末を含む、前記システム。
- 請求項54記載のシステムにおいて、前記広帯域通信ネットワークがケーブル・ネットワークを含む、前記システム。
- 請求項55記載のシステムにおいて、前記規則一式がケーブル・ネットワークの運用者により制定される、前記システム。
- 請求項53記載のシステムにおいて、前記規則一式が選択されたプログラム・コンテンツの提供者により制定される、前記システム。
- 請求項53記載のシステムにおいて、前記第2機器が前記第2機器から提供されるデジタル証明書内のデータを確認することで認証される、前記システム。
- 請求項53記載のシステムにおいて、前記選択されたプログラム・コンテンツが映画コンテンツを含む、前記システム。
- 請求項53記載のシステムにおいて、前記選択されたプログラム・コンテンツが機器に転送される前に、指標で示される前記第2機器の安全保障の程度が一式の規則の或る1つに適合するか否か判定される、前記システム。
- 請求項60記載のシステムにおいて、前記指標で示される前記第2機器の安全保障の程度が、或る規則に適合したと判定された後に、前記プログラム・コンテンツが転送される、前記システム。
- 請求項53記載のシステムにおいて、前記一式の規則の1つが、前記第2機器が前記選択されたプログラム・コンテンツを他の機器へ転送できる回数に関する、前記システム。
- 請求項53記載のシステムにおいて、前記一式の規則の1つが、前記第2機器が前記選択されたプログラム・コンテンツを再生できる期間に関する、前記システム。
- 請求項53記載のシステムにおいて、前記一式の規則の1つが、前記第2機器が前記選択されたプログラム・コンテンツを別の機器へ転送する権利を、前記他の機器の安全保障の程度の関数として規定する、前記システム。
- 保護コンテンツを受信するための機器であって:
前記機器の安全保障の程度を示す指標と、前記保護コンテンツの前記機器への転送要求を格納するための記憶装置と;
前記装置に、該装置から前記保護コンテンツを受信するための機器の正当性を検証するためのデータを提供するようにプログラムされたプロセッサと;
前記装置から保護コンテンツと、該保護コンテンツに関係する一式の規則を受け取るインタフェースであって、前記一式の規則の少なくともいくつかは前記指標に関連し且つ前記保護コンテンツの使用に関して前記機器で適用可能である、前記インタフェースとを含む、前記機器。 - 請求項65記載の機器において、前記データがデジタル証明書に含まれる、前記機器。
- 請求項65記載の機器において、前記保護コンテンツが映画コンテンツを含む、前記機器。
- 請求項65記載の機器において、前記一式の規則の1つが、前記機器が前記選択されたプログラム・コンテンツを他の機器へ転送できる回数に関する、前記機器。
- 請求項65記載の機器において、前記一式の規則の1つが、前記機器が前記選択されたプログラム・コンテンツを再生できる期間に関する、前記機器。
- 請求項65記載の機器において、前記一式の規則の1つが、前記機器が前記選択されたプログラム・コンテンツを別の機器へ転送する権利を、前記他の機器の安全保障の程度の関数として規定する、前記機器。
- 暗号化され、機器内の記憶装置に格納されているプログラム・コンテンツを有する前記機器に接続可能なモジュール装置であって:
前記機器から前記プログラム・コンテンツへのアクセスするための要求を受け取り、該要求は前記記憶装置内の暗号化されたプログラム・コンテンツに関連して格納されたデータ・パッケージを含むインタフェースと;
前記要求に応答して、前記機器が前記プログラム・コンテンツへのアクセスを許されているかを、第1データ・パッケージ内の情報に基づいて判定するように構成されたプロセッサと;
前記機器に、少なくとも前記記憶装置内の暗号化されたプログラム・コンテンツを復号化するための暗号法要素に関するデータを提供し、これにより前記機器に前記プログラム・コンテンツへのアクセスを提供するための機構とを含む前記装置。 - 請求項71記載の装置において、前記情報が前記プログラム・コンテンツへアクセスする権利に関する、前記装置。
- 請求項72記載の装置において、前記権利が前記プログラム・コンテンツを再生する権利を含む、前記装置。
- 請求項72記載の装置において、前記権利が前記プログラム・コンテンツを記録する権利を含む、前記装置。
- 請求項72記載の装置において、前記暗号法要素が1つの暗号化鍵を含む、前記装置。
- 請求項75記載の装置において、前記データが前記暗号化鍵の暗号化された版を表す、前記装置。
- 請求項75記載の装置において、前記データ・パッケージが前記暗号化鍵の暗号化された版を表すデータを含む、前記装置。
- CableCARDを含む請求項75記載の装置。
- 請求項78記載の装置において、前記CableCARDがプログラム・コンテンツを含む複数のデータ・ストリームを同時に取り扱えるように構成されている、前記装置。
- モジュール装置に接続可能な機器であって:
前記モジュール装置に送られる、選択されたプログラム・コンテンツを記録するための要求を生成するように構成された処理ユニットと;
前記モジュール装置から前記要求に対する返答を受け取るインタフェースで、該返答は暗号法要素に関するデータ、該暗号法要素の少なくとも1つの版を含むデータ・パッケージ、および前記選択されたプログラム・コンテンツに関連する、少なくとも1つの安全保障測度に基づいた前記機器が前記選択されたプログラム・コンテンツの記録を許されているか否かの判定結果を含み、前記選択されたプログラム・コンテンツが前記判定結果に基づき記録される、前記インタフェースと;
前記記録されたプログラム・コンテンツを前記データから導出された暗号化法要素で暗号化するための機構と;
前記暗号化されたプログラム・コンテンツを前記データ・パッケージと関連して前記記憶装置内に格納するための記憶装置とを含む前記機器。 - 請求項80記載の機器において、前記暗号化法要素が1つの暗号化鍵を含む、前記機器。
- 請求項80記載の機器において、前記データが暗号化鍵の暗号化された版を表す、前記機器。
- 請求項80記載の機器において、前記機器に関連する安全保障レベルに基づいて前記選択されたプログラム・コンテンツの記録を許可される、前記機器。
- 請求項81記載の機器において、前記暗号化法要素の版が暗号化鍵の暗号化版を含む、前記機器。
- 請求項80記載の機器において、選択されたプログラム・コンテンツが通信ネットワークから受信される、前記機器。
- 請求項85記載の機器において、選択されたプログラム・コンテンツがケーブル・ネットワークを含む通信ネットワークから受信される、前記機器。
- 請求項80記載の機器において、前記インタフェースが前記モジュール装置を前記機器に結合するように構成されている、前記機器。
- 請求項87記載の機器において、前記インタフェースがCableCARDを含む前記モジュール装置を前記機器に結合するように構成されている、前記機器。
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US20130104162A1 (en) | 2013-04-25 |
US10848806B2 (en) | 2020-11-24 |
US9973798B2 (en) | 2018-05-15 |
EP2458778A2 (en) | 2012-05-30 |
EP1829271A2 (en) | 2007-09-05 |
EP2458778A3 (en) | 2014-06-25 |
US8312267B2 (en) | 2012-11-13 |
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