JP5083420B2 - 認証方法、記録装置及び再生装置 - Google Patents
認証方法、記録装置及び再生装置 Download PDFInfo
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Description
Claims (12)
- データ出力装置から出力されるデータを、種類の異なる複数の記録媒体に暗号化された状態で記録することが可能な記録装置における認証方法であって、
前記記録装置は、種類の異なる複数の記録媒体に対応した種類の異なる複数の暗号化方法に対応し、前記データ出力装置との間で認証を行う関係にあり、
前記種類の異なる複数の暗号化方法は、それぞれ、種類の異なる複数の認証方法のいずれかと対応しており、前記記録装置と前記データ出力装置との間で複数の認証方法のいずれかの認証を行って取得される暗号化の情報に基づいてデータを暗号化する方法を含み、
前記種類の異なる複数の暗号化方法の中から前記記録媒体の種類に基づいて所定の暗号化方法を選択するステップと、
選択された暗号化方法に対応した認証方法によって前記データ出力装置と認証を行い、前記データ出力装置との間で暗号化の情報の受け渡しを行うステップと
を有することを特徴とする認証方法。 - 請求項1に記載の認証方法において、
前記記録媒体の種類に基づいて前記種類の異なる複数の暗号化方法の中から所定の暗号化方法を選択することを特徴とする認証方法。 - 請求項1に記載の認証方法において、
前記種類の異なる複数の暗号化方法は、前記記録媒体に記録するデータのコピーの制御の状態に対応して暗号化を行う暗号化方法を含むことを特徴とする認証方法。 - 種類の異なる複数の記録媒体に、暗号化された状態で記録されているデータを再生して、復号装置に出力することが可能な再生装置における認証方法であって、
前記再生装置は、種類の異なる複数の記録媒体に対応した種類の異なる複数の暗号化方法に対応した復号方法に対応し、前記復号装置との間で認証を行う関係にあり、
前記種類の異なる複数の暗号化方法に対応した前記復号方法は、それぞれ、種類の異なる複数の認証方法のいずれかと対応しており、前記再生装置と前記復号装置との間で複数の認証方法のいずれかの認証を行って取得される暗号化の情報に基づいてデータを復号する方法を含み、
前記種類の異なる複数の暗号化方法の中から前記記録媒体の種類に基づいて所定の暗号化方法を選択するステップと、
選択された復号方法によって前記復号装置と認証を行い、前記復号装置との間で暗号化の情報の受け渡しを行うステップと、
を有することを特徴とする認証方法。 - 請求項4に記載の認証方法において、
前記記録媒体の種類に基づいて前記種類の異なる複数の暗号化方法の中から所定の暗号化方法を選択することを特徴とする認証方法。 - 請求項4に記載の認証方法において、
前記種類の異なる複数の暗号化方法は、前記記録媒体に記録されているデータのコピーの制御の状態に対応して暗号化を行う暗号化方法を含むことを特徴とする認証方法。 - データ出力装置から出力されるデータを、種類の異なる複数の記録媒体に暗号化された状態で記録することが可能な記録装置であって、
前記データ出力装置との間で認証を行う認証部と、
暗号化された状態のデータを記録媒体に記録する記録部と、
を備え、
前記記録装置は、種類の異なる複数の記録媒体に対応した種類の異なる複数の暗号化方法に対応し、前記データ出力装置との間で認証を行う関係にあり、
前記種類の異なる複数の暗号化方法は、それぞれ、種類の異なる複数の認証方法のいずれかと対応しており、前記記録装置と前記データ出力装置との間で複数の認証方法のいずれかの認証を行って取得される暗号化の情報に基づいてデータを暗号化する方法を含み、
前記認証部は、種類の異なる複数の暗号化方法の中から、前記記録媒体の種類に基づいて選択された所定の暗号化方法に対応した認証方法によって前記データ出力装置と認証を行い、前記データ出力装置との間で暗号化の情報の受け渡しを行うことを特徴とする記録装置。 - 請求項7に記載の記録装置において、
前記記録媒体の種類に基づいて前記種類の異なる複数の暗号化方法の中から所定の暗号化方法が選択されていることを特徴とする記録装置。 - 請求項7に記載の記録装置において、
前記種類の異なる複数の暗号化方法は、前記記録媒体に記録されているデータのコピーの制御の状態に対応して暗号化を行う暗号化方法を含むことを特徴とする記録装置。 - 種類の異なる複数の記録媒体に暗号化された状態で記録されているデータを再生して、復号装置に出力することが可能な再生装置であって、
前記復号装置との間で認証を行う認証部と、
暗号化された状態で記録媒体に記録されているデータを再生する再生部と、
を備え、
前記再生装置は、種類の異なる複数の記録媒体に対応した種類の異なる複数の暗号化方法に対応した復号方法に対応し、前記復号装置との間で認証を行う関係にあり、
前記種類の異なる複数の暗号化方法に対応した前記復号方法は、それぞれ、種類の異なる複数の認証方法のいずれかと対応しており、前記記録装置と前記データ出力装置との間で複数の認証方法のいずれかの認証を行って取得される暗号化の情報に基づいてデータを復号する方法を含み、
前記認証部は、種類の異なる複数の暗号化方法に対応した復号方法の中から、前記記録媒体の種類に基づいて選択された所定の復号方法に対応した認証方法によって前記復号装置と認証を行い、前記復号装置との間で復号の情報の受け渡しを行うことを特徴とする再生装置。 - 請求項10に記載の再生装置において、
前記記録媒体の種類に基づいて前記種類の異なる複数の暗号化方法の中から所定の暗号化方法が選択されていることを特徴とする再生装置。 - 請求項10記載の再生装置において、
前記種類の異なる複数の暗号化方法は、前記記録媒体に記録されているデータのコピーの制御の状態に対応して暗号化を行う暗号化方法を含むことを特徴とする再生装置。
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