JP2016038919A - プロセス制御システムに対するデバイスの安全化 - Google Patents
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Abstract
【解決手段】初期化に応じて、デバイスは、鍵に基づいて、必要な条件を満たしているかどうかを判定し、デバイスは、それに応じて、デバイス自体を分離するか、またはプロセス制御ネットワークにアクセスする。必要な条件/属性は、例えば、場所、時間、コンテキスト、顧客、供給業者、特定のプラント、製造業者、ユーザ、データタイプ、デバイスタイプ、及び/または他の基準に基づき得る。加えて、別の1組の必要な条件/属性から、鍵と関連付けられる副鍵が生成され得る。副鍵は、鍵プロバイダエンティティと異なるエンティティによって提供され得る。
【選択図】図1
Description
Claims (36)
- プロセス制御プラントで使用するためのプロセス制御デバイスであって、
プロセッサと、
前記プロセス制御デバイスが、前記プロセス制御プラントのネットワークを使用して別のデバイスと通信することを許可されるために必要とされる1組の必要な属性を示すデータを記憶する、不揮発性メモリであって、前記1組の必要な属性は、前記プロセス制御デバイスが前記別のデバイスとの通信を許可される環境を記述する、不揮発性メモリと、
前記不揮発性メモリに、または前記プロセス制御デバイスの別のメモリに記憶される、コンピュータ実行可能な命令と、
を備え、
前記コンピュータ実行可能な命令は、前記プロセス制御デバイスのブートアップの後に、かつ前記プロセス制御デバイスが任意の他のデバイスと通信して、(i)前記プロセス制御デバイスを構成すること、または(ii)前記プロセス制御プラントでプロセスを制御するために使用されるデータの送信または受信のうちの少なくとも1つを行うこと、のうちの少なくとも1つの前に、前記プロセッサによって実行可能であり、
前記コンピュータ実行可能な命令は、前記プロセッサによって実行されたときに、前記プロセス制御デバイスに、
前記ブートアップの後に前記プロセス制御デバイスが位置する現在の環境の1組の現在の属性を決定させ、
前記1組の必要な属性を示す前記データに基づいて、前記プロセス制御デバイスが位置する前記現在の環境の前記1組の現在の属性が前記1組の必要な属性を遵守しているかどうかを判定させ、
前記1組の現在の属性が前記1組の必要な属性を遵守しているときには、前記プロセス制御デバイスが、前記別のデバイスと通信して、(i)前記プロセス制御デバイスを構成すること、または(ii)前記プロセスを制御させるためにリアルタイムデータの送信または受信のうちの少なくとも1つを行うこと、のうちの少なくとも1つを行うことを許可し、
前記1組の現在の属性が前記1組の必要な属性を遵守していないときには、前記プロセス制御デバイスが、前記別のデバイスと通信して、(i)前記プロセス制御デバイスを構成すること、または(ii)前記プロセスを制御させるために前記リアルタイムデータの送信または受信のうちの少なくとも1つを行うこと、のうちの少なくとも1つを阻止する、
プロセス制御デバイス。 - 地理空間的受信機をさらに備え、
前記コンピュータ実行可能な命令はさらに、前記プロセス制御デバイスに、前記地理空間的受信機を使用して、プロセス制御デバイスの現在の地理空間的位置を決定させるために、前記プロセッサによって実行可能であり、
前記プロセス制御デバイスが位置する前記環境に対応する前記1組の必要な属性は、特定の地理空間的領域を含む、請求項1に記載のプロセス制御デバイス。 - 前記コンピュータ実行可能な命令はさらに、前記プロセス制御デバイスに、現在の時間を決定させるために実行可能であり、
前記プロセス制御デバイスが位置する前記環境に対応する前記1組の必要な属性はさらに、前記特定の地理空間的領域に対応する特定の時間間隔を含む、請求項2に記載のプロセス制御デバイス。 - 前記不揮発性メモリには、前記プロセス制御プラントの前記ネットワークに対して前記プロセス制御デバイスを認証する際に使用するための使用するための鍵が供給され、前記鍵は、シードに基づいて生成され、前記シードは、鍵生成データ、及びランダムに生成されるかまたは疑似ランダム的に生成される数字を含み、前記鍵生成データは、前記プロセス制御デバイスが、前記プロセス制御プラントの前記ネットワークを使用して、前記別のデバイスと通信することを許可されるために必要とされる、前記1組の必要な属性を示す、請求項1に記載のプロセス制御デバイス。
- 前記プロセス制御デバイスの前記不揮発性メモリに供給される前記鍵は、暗号化鍵であり、
前記暗号化鍵は、非暗号化鍵を暗号化することによって生成され、
前記シードは、前記非暗号化鍵を生成するために使用される、請求項4に記載のプロセス制御デバイス。 - 追加的なコンピュータ実行可能な命令をさらに備え、該追加的なコンピュータ実行可能な命令は、前記プロセッサによって実行されたときに、前記1組の現在の属性が前記1組の必要な属性を遵守していると判定された後に、かつ前記プロセス制御デバイスが前記別のデバイスと通信して、(i)前記デバイスを構成すること、または(ii)前記プロセスを制御させるために前記リアルタイムデータの送信または受信のうちの少なくとも1つを行うこと、のうちの少なくとも1つの前に、前記不揮発性メモリに供給される前記鍵を使用して、前記プロセス制御デバイスに、前記別のデバイスでまたは認証局で認証させる、請求項4に記載のプロセス制御デバイス。
- 前記送信または受信したリアルタイムデータの少なくとも一部分は、メッセージの内容に含まれ、前記メッセージの前記内容の妥当性を検査するために前記メッセージのメッセージ完全性フィールドに含まれるデータは、前記鍵に基づくか、または前記鍵に基づいて生成される副鍵に基づく、請求項4に記載のプロセス制御デバイス。
- 前記1組の必要な属性は、前記プロセスを制御するために前記プロセス制御デバイスによって送信されるデータのタイプ、前記プロセスを制御するために前記プロセス制御デバイスによって受信されるデータのタイプ、前記プロセス制御デバイスの製造業者、前記プロセス制御プラントの識別情報、前記プロセス制御プラントの領域の識別情報、前記プロセス制御プラントを動作させる組織エンティティの識別情報、または、前記プロセス制御プラントが位置する国の識別情報、のうちの少なくとも1つを含む、請求項1に記載のプロセス制御デバイス。
- 前記1組の必要な属性はさらに、ユーザの属性を含む、請求項8に記載のプロセス制御デバイス。
- 前記プロセス制御デバイスは、プロセスコントローラ、フィールドデバイス、または前記プロセスコントローラに関する入力/出力(I/O)カード、のうちの1つである、請求項1に記載のプロセス制御デバイス。
- 前記プロセス制御デバイスを集中型または分散型ビッグデータアプライアンスに通信可能に接続しているインターフェースをさらに備え、前記プロセス制御デバイスは、前記リアルタイムデータを前記集中型または分散型ビッグデータアプライアンスに提供する、請求項1に記載のプロセス制御デバイス。
- プロセス制御プラントにおいてデバイスを安全化するための方法であって、
コンピューティングデバイスで、鍵を生成するために使用されるシードを決定することであって、前記シードは、ランダムに生成されるかまたは疑似ランダムに生成される数字に少なくとも部分的に基づく、シードを決定することと、
前記コンピューティングデバイスで、鍵生成データを決定することと、
を含み、
前記鍵生成データは、前記鍵が供給されるホストデバイスが、前記プロセス制御プラントのネットワークを使用して通信して、(i)前記ホストデバイスを構成すること、(ii)プロセスを前記プロセス制御プラントで制御させるためにリアルタイムデータを送信すること、または(iii)前記プロセスを制御させるためにリアルタイムデータを受信すること、のうちの少なくとも1つを行うために必要とされる、1組の必要な条件を示し、
前記1組の必要な条件は、
前記ホストデバイスが位置することができる環境の1つ以上の特性を含む、鍵生成データを決定することと、
前記コンピューティングデバイスで、前記シード及び前記鍵生成データから前記鍵を生成することと、
前記コンピューティングデバイスによって、前記生成した鍵をプロセス制御デバイスに供給させ、よって、前記供給されたプロセス制御デバイスが前記ホストデバイスであり、また、前記生成した鍵を使用して、ならびに、前記1組の必要な条件の比較、及びブートアップ時に前記供給されたプロセス制御デバイスが位置する現在の環境に対応する1組の現在の条件に基づいて、前記供給されたプロセス制御デバイスを前記ネットワークに対して認証することと、を含む、方法。 - 前記鍵を生成するために使用される前記シードを決定することは、前記プロセス制御デバイスの識別情報にさらに基づいて、前記シードを決定することを含む、請求項12に記載の方法。
- 前記プロセス制御デバイスに前記生成された鍵を供給させることは、前記プロセス制御デバイスが任意の他のデバイスと通信して、(i)前記プロセス制御デバイスを構成すること、(ii)前記プロセスを制御させるためにリアルタイムデータを送信すること、または(iii)前記プロセスを制御させるためにリアルタイムデータを受信すること、のうちの少なくとも1つを行う前に、前記生成された鍵を前記プロセス制御デバイスの不揮発性メモリに記憶させることを含む、請求項12に記載の方法。
- 前記1組の必要な条件は、前記ホストデバイスの地理空間的場所、特定の時間、特定の時間間隔、特定の日付もしくは日付の範囲、または前記プロセス制御プラントの特定の領域、のうちの少なくとも1つを含む、請求項12に記載の方法。
- 前記1組の必要な条件は、前記ホストデバイスによって送信されるリアルタイムデータのタイプ、前記ホストデバイスによって受信されるリアルタイムデータのタイプ、または、前記ホストデバイスの製造業者、のうちの少なくとも1つを含む、請求項12に記載の方法。
- 前記1組の必要な条件は、前記プロセス制御プラントの識別情報、前記プロセス制御プラントを動作させる組織エンティティの識別情報、または、前記プロセス制御プラントが位置する国の識別情報、のうちの少なくとも1つを含む、請求項12に記載の方法。
- 前記コンピューティングデバイスは、第1のコンピューティングデバイスであり、前記鍵は、第1の鍵であり、前記シードは、第1のシードであり、前記鍵生成データは、第1の鍵生成データであり、前記1組の条件は、第1の1組の必要な条件であり、前記ホストデバイスは、第1のホストデバイスであり、前記プロセス制御デバイスは、第1のプロセス制御デバイスであり、
前記方法はさらに、
第2の鍵を生成するために第2のシードを決定することであって、前記第2のシードは、第2のホストデバイスが前記プロセス制御プラントの前記ネットワークを介して通信するために必要とされる第2の1組の必要な条件を示す第2の鍵生成データに基づく、第2のシードを決定することと、
前記第2のシードから第2の鍵を生成することと、
前記第2の鍵を第2のデバイスに供給させ、よって、前記第2のデバイスが前記第2のホストデバイスであり、また、前記生成した第2の鍵を使用して、ならびに、前記第2の1組の必要な条件の比較、及びブートアップ時に前記供給された第2のデバイスが位置する現在の環境に対応する1組の現在の条件に基づいて、前記供給された第2のデバイスを前記ネットワークに対して認証することと、を含み、
前記供給された第2のデバイスは、第2のプロセス制御デバイスまたは第2のコンピューティングデバイスである、請求項12に記載の方法。 - プロセス制御プラントで使用するためのデバイスであって、
プロセッサと、
鍵及び前記鍵に由来する副鍵を記憶する不揮発性メモリであって、
前記鍵は、前記鍵が供給されるホストデバイスが前記プロセス制御プラントのネットワークと通信するために必要とされる第1の1組の必要な条件を示す鍵生成データに少なくとも部分的に基づいて生成され、前記第1の1組の必要な条件は、前記ホストデバイスが位置することができる環境に対応し、
前記副鍵は、前記副鍵が供給される前記ホストデバイスが前記プロセス制御プラントの前記ネットワークと通信するために必要とされる第2の1組の必要な条件を示す副鍵生成データに少なくとも部分的に基づいて生成され、前記第2の1組の必要な条件は、前記ホストデバイスが位置することができる前記環境に対応する、不揮発性メモリと、
前記不揮発性メモリまたは前記デバイスの別のメモリに記憶される、コンピュータ実行可能な命令と、
を含み、
前記コンピュータ実行可能な命令は、前記デバイスに、
前記鍵または前記副鍵に基づいて、デバイスが位置する現在の環境の1組の現在の条件が前記それぞれの1組の必要な条件を遵守しているかどうかを判定させ、
前記1組の現在の条件が前記それぞれの1組の必要な条件を遵守しているときには、前記デバイスが前記プロセス制御プラントの別のデバイスと通信して、(i)前記デバイスを構成すること、または(ii)プロセスを制御することによって生成されるリアルタイムデータの送信または受信のうちの少なくとも1つを行うこと、のうちの1つを行うことを許可し、
前記1組の現在の条件が前記それぞれの1組の必要な条件を遵守していないときには、前記デバイスが前記プロセス制御プラントの前記別のデバイスと通信して、(i)前記デバイスを構成すること、または(ii)前記プロセスを制御することによって生成される前記リアルタイムデータの送信または受信のうちの少なくとも1つを行うこと、のうちの少なくとも1つを行うことを阻止する、ことを行わせるように、プロセッサにより実行可能である、デバイス。 - 前記別のデバイスは、前記プロセス制御プラントに含まれる少なくとも1つのネットワークの中のノードである、請求項19に記載のデバイス。
- 前記プロセッサによって実行されたときに、前記デバイスに、前記デバイスが位置する前記現在の環境の前記1組の現在の条件を決定させる、追加的なコンピュータ実行可能な命令をさらに含む、請求項19に記載のデバイス。
- 前記プロセッサによって実行されたときに、前記デバイスが前記プロセス制御プラントの前記別のデバイスと通信して、(i)前記デバイスを構成すること、または(ii)前記プロセスを制御することによって生成される前記リアルタイムデータの送信または受信のうちの少なくとも1つを行うこと、のうちの少なくとも1つを行う前に、前記鍵または前記副鍵を使用して、前記デバイスに、前記別のデバイスでまたは認証局で認証させる、追加的なコンピュータ実行可能な命令をさらに含む、請求項19に記載のデバイス。
- 前記プロセッサによって実行されたときに、(i)前記デバイスを構成すること、または(ii)前記プロセスを制御することによって生成される前記リアルタイムデータの送信または受信のうちの少なくとも1つを行うこと、のうちの少なくとも1つを行うために、前記デバイスに、前記デバイスと前記別のデバイスとの間で通信するためのセッションを確立させ、前記鍵または前記副鍵のうちの少なくとも1つが前記セッションに固有である、追加的なコンピュータ実行可能な命令をさらに含む、請求項19に記載のデバイス。
- 前記セッションは、前記別のデバイスに、または前記別のデバイスがノードであるネットワークに対応する、請求項23に記載のデバイス。
- 前記第1の1組の必要な条件または前記第2の1組の必要な条件のうちの少なくとも1つは、地理空間的場所、特定の時間、特定の時間間隔、日付、または前記プロセス制御プラントの領域のうちの少なくとも1つを含む、請求項19に記載のデバイス。
- 前記第1の1組の必要な条件または前記第2の1組の必要な条件のうちの少なくとも1つは、前記プロセスを制御するために前記デバイスによって送信されるデータのタイプ、前記プロセスを制御するために前記デバイスによって受信されるデータのタイプ、または前記デバイスの製造業者、のうちの少なくとも1つを含む、請求項19に記載のデバイス。
- 前記第1の1組の必要な条件または前記第2の1組の必要な条件のうちの少なくとも1つは、前記プロセス制御プラントの識別情報、前記プロセス制御プラントの領域の識別情報、前記プロセス制御プラントを動作させる組織エンティティの識別情報、または前記プロセス制御プラントが位置する国の識別情報、のうちの少なくとも1つを含む、請求項19に記載のデバイス。
- 前記第1の1組の必要な条件または前記第2の1組の必要な条件のうちの少なくとも1つは、前記デバイスのユーザの属性を含む、請求項19に記載のデバイス。
- 前記デバイスは、プロセスコントローラ、フィールドデバイス、または前記プロセスコントローラに関する入力/出力(I/O)カード、のうちの1つである、請求項19に記載のデバイス。
- 前記デバイスは、プロセスコントローラ、フィールドデバイス、または前記プロセスコントローラに関する入力/出力(I/O)カード、のうちの少なくとも1つに対応するデータの送信または受信のうちの少なくとも1つを行うように構成されるコンピューティングデバイスである、請求項19に記載のデバイス。
- 前記デバイスは、ユーザインターフェースを含むモバイルコンピューティングデバイスであり、モバイル制御室アプリケーションは、前記モバイルコンピューティングデバイス上で実行する、請求項19に記載のデバイス。
- 前記第1の1組の必要な条件の少なくとも1つのメンバーは、前記デバイスのプロバイダによって定義され、前記第2の1組の必要な条件の少なくとも1つのメンバーは、前記デバイスのユーザによって定義される、請求項19に記載のデバイス。
- 前記プロセスを制御することによって生成され、前記デバイスによって送信または受信される前記リアルタイムデータは、暗号化される、請求項19に記載のデバイス。
- 前記リアルタイムデータは、前記鍵または前記副鍵のうちの1つに基づいて暗号化される、請求項33に記載のデバイス。
- 前記デバイスによって送信される全てのデータは、暗号化される、請求項19に記載のデバイス。
- 前記デバイスによって送信される全てのデータは、前記鍵または前記副鍵に少なくとも部分的に基づいて暗号化される、請求項33に記載のデバイス。
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JP2019012375A (ja) * | 2017-06-30 | 2019-01-24 | 三菱電機株式会社 | 計装制御システム |
US11252565B2 (en) | 2018-12-27 | 2022-02-15 | Yokogawa Electric Corporation | Field device, information collecting system, and information collecting method |
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GB201513617D0 (en) | 2015-09-16 |
US9772623B2 (en) | 2017-09-26 |
CN105373091B (zh) | 2019-06-04 |
DE102015113054A1 (de) | 2016-02-25 |
CN109901533B (zh) | 2022-04-01 |
JP6700688B2 (ja) | 2020-05-27 |
GB2530630B (en) | 2019-02-06 |
US20160327942A1 (en) | 2016-11-10 |
US9397836B2 (en) | 2016-07-19 |
US20160043866A1 (en) | 2016-02-11 |
GB2530630A (en) | 2016-03-30 |
CN105373091A (zh) | 2016-03-02 |
CN109901533A (zh) | 2019-06-18 |
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